Hi Cecil,


    I am in for 2 ea.


    73 Rein W6/PA0ZN



KD5NWA wrote:

>
>
> Mini-Circuits makes a SMT signal splitter that is quite useful for use in
> SDR radios or in transmitters. I'm thinking of buying some of these
> devices from Mini-Circuits and thought if others were interested to the
> point where we could make the 25 unit pricing we could save a lot of money.
> The unit price is $15.10 but at the 25 quantity order the part cost $2.64
> each. The part is rated 5MHz to 1 GHz with very flat response in the whole
> range.
>
> The device specs are listed below, I'm looking at the SBTC-2-10L+ device
> for
> the buy.
>
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf> >
>
> I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make
> nothing on the deal but then I don't want to loose anything either.
>
> Shipping cost will be determined by the number of parts ordered. Mailing
> fees will be the cost of a padded envelope + stamp cost, Internaltional
> orders are $.90 + the cost of a padded envelope.
>
> If interested let me know how may you are interested in, and if we get a
> sufficient desired quantity I can make a descision to make the buy.
>
> Thanks
>
> --
>
> Cecil
> KD5NWA
> www.qrpradio.com www.hpsdr.com
>
> "Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna
>
>
> ------------------------------------------------------------------------
>
> Subject:
> Re: [QRP-L] Surface Mount Power Splitter Wanted
> From:
> Ceciliio A Bayona <kd5nwa@...>
> Date:
> Thu, 3 Aug 2006 07:06:54 -0500
> To:
> Leon Heller <leon.heller@...>
>
> To:
> Leon Heller <leon.heller@...>
> CC:
> qrp-l@...
>
>
> $1.69 is the 1000 price, a more realistic price is $2.64 for qty 25  of
> the "L" part.
>
> I would be interested in a couple of these things also, I will think
> about it and by this weekend decide if I want to make a group  purchase
> on the item.
>
> I'll figure the cost and see if there is enough interest in some of  the
> SDR list, and I will post back after a decision is made. I will  looking
> at the SBCT-2-10L+ for the buy.
>
> I would sell these if I do at Cost+Shipping+PayPal fees, I will make
> nothing on the deal but then I don't want to loose anything either.
>
> Thanks
>
> On Aug 3, 2006, at 2:07 AM, Leon Heller wrote:
>
>> ----- Original Message ----- From: "Kurt Loken" <ae6uj@...>
>> To: <qrp-l@...>
>> Sent: Thursday, August 03, 2006 5:10 AM
>> Subject: [QRP-L] Surface Mount Power Splitter Wanted
>>
>>
>> Hello All,
>>
>> Any one know where I could buy one of these
>> Minicurcuit surface mount power splitters for the
>> price on the spec sheet ($1.69)?  Looks like they want
>> $15 if I try to buy 1.
>>
>> http://www.minicircuits.com/SBTC-2-10_10L.pdf
>>
>> The last time I needed a few mixers from MCL I bought 25 pieces to
>> get a good price on them, kept some for myself and sold the  unwanted
>> ones to other hams. I got my mixers for nothing, and the  people who
>> bought them got them much cheaper than they could get  them from the
>> usual suppliers.
>>
>> 73, Leon
>> ______________________________________________________________
>> QRP-L mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:QRP-L@...
>
>
> ______________________________________________________________
> QRP-L mailing list
> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:QRP-L@...

Hi Ted,

I has very bad luck with this soundcard as well, noting the same problem
you've seen below.  My solution was to replace it with an M-Audio Delta
44 soundcard which works perfectly.

thanks and 73,
ben


ed.lark wrote:
>
>
> Hi all
>         This soundcard with v6 gives less than 20 db image
> rejection.
>   Q/I amplitude equal but phase + 100deg @ -20khz
>  -60 deg @ +20khz  +60 @ 0khz, 0deg@+/ <mailto:0deg@+/> - 14khz
>     Suggestions(polite please!). I have  -1 bit LH channel
>  set.
>          Help anyone?
>                        Cheers
>                              Ted. Lark
> G3CWC

Hi Cecil,

I'd be in for 4 of them at the $2.64 price...

thanks and 73,
ben, KD5BYB


KD5NWA wrote:
>
>
> Mini-Circuits makes a SMT signal splitter that is quite useful for use in
> SDR radios or in transmitters. I'm thinking of buying some of these
> devices from Mini-Circuits and thought if others were interested to the
> point where we could make the 25 unit pricing we could save a lot of money.
> The unit price is $15.10 but at the 25 quantity order the part cost $2.64
> each. The part is rated 5MHz to 1 GHz with very flat response in the whole
> range.
>
> The device specs are listed below, I'm looking at the SBTC-2-10L+ device
> for
> the buy.
>
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf> >
>
> I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make
> nothing on the deal but then I don't want to loose anything either.
>
> Shipping cost will be determined by the number of parts ordered. Mailing
> fees will be the cost of a padded envelope + stamp cost, Internaltional
> orders are $.90 + the cost of a padded envelope.
>
> If interested let me know how may you are interested in, and if we get a
> sufficient desired quantity I can make a descision to make the buy.
>
> Thanks
>
> --
>
> Cecil
> KD5NWA
> www.qrpradio.com www.hpsdr.com
>
> "Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna
>
>
> ------------------------------------------------------------------------
>
> Subject:
> Re: [QRP-L] Surface Mount Power Splitter Wanted
> From:
> Ceciliio A Bayona <kd5nwa@...>
> Date:
> Thu, 3 Aug 2006 07:06:54 -0500
> To:
> Leon Heller <leon.heller@...>
>
> To:
> Leon Heller <leon.heller@...>
> CC:
> qrp-l@...
>
>
> $1.69 is the 1000 price, a more realistic price is $2.64 for qty 25 of
> the "L" part.
>
> I would be interested in a couple of these things also, I will think
> about it and by this weekend decide if I want to make a group purchase
> on the item.
>
> I'll figure the cost and see if there is enough interest in some of the
> SDR list, and I will post back after a decision is made. I will looking
> at the SBCT-2-10L+ for the buy.
>
> I would sell these if I do at Cost+Shipping+PayPal fees, I will make
> nothing on the deal but then I don't want to loose anything either.
>
> Thanks
>
> On Aug 3, 2006, at 2:07 AM, Leon Heller wrote:
>
>> ----- Original Message ----- From: "Kurt Loken" <ae6uj@...>
>> To: <qrp-l@...>
>> Sent: Thursday, August 03, 2006 5:10 AM
>> Subject: [QRP-L] Surface Mount Power Splitter Wanted
>>
>>
>> Hello All,
>>
>> Any one know where I could buy one of these
>> Minicurcuit surface mount power splitters for the
>> price on the spec sheet ($1.69)?  Looks like they want
>> $15 if I try to buy 1.
>>
>> http://www.minicircuits.com/SBTC-2-10_10L.pdf
>>
>> The last time I needed a few mixers from MCL I bought 25 pieces to get
>> a good price on them, kept some for myself and sold the unwanted ones
>> to other hams. I got my mixers for nothing, and the people who bought
>> them got them much cheaper than they could get them from the usual
>> suppliers.
>>
>> 73, Leon
>> ______________________________________________________________
>> QRP-L mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:QRP-L@...
>
> ______________________________________________________________
> QRP-L mailing list
> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:QRP-L@...
>
>
> ------------------------------------------------------------------------
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.10.5/406 - Release Date: 8/2/2006

Be aware that $2.64 is just the price of the part, there is also mailing
cost and the shipping charge for ordering the parts that will be split by
everyone.


On Friday 04 August 2006 13:32, Ben Hall wrote:
> Hi Cecil,
>
> I'd be in for 4 of them at the $2.64 price...
>
> thanks and 73,
> ben, KD5BYB
>
> KD5NWA wrote:
> > Mini-Circuits makes a SMT signal splitter that is quite useful for use
> > in SDR radios or in transmitters. I'm thinking of buying some of these
> > devices from Mini-Circuits and thought if others were interested to the
> > point where we could make the 25 unit pricing we could save a lot of
> > money. The unit price is $15.10 but at the 25 quantity order the part
> > cost $2.64 each. The part is rated 5MHz to 1 GHz with very flat
> > response in the whole range.
> >
> > The device specs are listed below, I'm looking at the SBTC-2-10L+
> > device for
> > the buy.
> >
> > <http://www.minicircuits.com/SBTC-2-10_10L.pdf
> > <http://www.minicircuits.com/SBTC-2-10_10L.pdf> >
> >
> > I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will
> > make nothing on the deal but then I don't want to loose anything
> > either.
> >
> > Shipping cost will be determined by the number of parts ordered.
> > Mailing fees will be the cost of a padded envelope + stamp cost,
> > Internaltional orders are $.90 + the cost of a padded envelope.
> >
> > If interested let me know how may you are interested in, and if we get
> > a sufficient desired quantity I can make a descision to make the buy.
> >
> > Thanks
> >
> > --
> >
> > Cecil
> > KD5NWA
> > www.qrpradio.com www.hpsdr.com
> >
> > "Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna
> >
> >
> > -----------------------------------------------------------------------
> >-
> >
> > Subject:
> > Re: [QRP-L] Surface Mount Power Splitter Wanted
> > From:
> > Ceciliio A Bayona <kd5nwa@...>
> > Date:
> > Thu, 3 Aug 2006 07:06:54 -0500
> > To:
> > Leon Heller <leon.heller@...>
> >
> > To:
> > Leon Heller <leon.heller@...>
> > CC:
> > qrp-l@...
> >
> >
> > $1.69 is the 1000 price, a more realistic price is $2.64 for qty 25 of
> > the "L" part.
> >
> > I would be interested in a couple of these things also, I will think
> > about it and by this weekend decide if I want to make a group purchase
> > on the item.
> >
> > I'll figure the cost and see if there is enough interest in some of the
> > SDR list, and I will post back after a decision is made. I will looking
> > at the SBCT-2-10L+ for the buy.
> >
> > I would sell these if I do at Cost+Shipping+PayPal fees, I will make
> > nothing on the deal but then I don't want to loose anything either.
> >
> > Thanks
> >
> > On Aug 3, 2006, at 2:07 AM, Leon Heller wrote:
> >> ----- Original Message ----- From: "Kurt Loken" <ae6uj@...>
> >> To: <qrp-l@...>
> >> Sent: Thursday, August 03, 2006 5:10 AM
> >> Subject: [QRP-L] Surface Mount Power Splitter Wanted
> >>
> >>
> >> Hello All,
> >>
> >> Any one know where I could buy one of these
> >> Minicurcuit surface mount power splitters for the
> >> price on the spec sheet ($1.69)?  Looks like they want
> >> $15 if I try to buy 1.
> >>
> >> http://www.minicircuits.com/SBTC-2-10_10L.pdf
> >>
> >> The last time I needed a few mixers from MCL I bought 25 pieces to get
> >> a good price on them, kept some for myself and sold the unwanted ones
> >> to other hams. I got my mixers for nothing, and the people who bought
> >> them got them much cheaper than they could get them from the usual
> >> suppliers.
> >>
> >> 73, Leon
> >> ______________________________________________________________
> >> QRP-L mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:QRP-L@...
> >
> > ______________________________________________________________
> > QRP-L mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/qrp-l
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:QRP-L@...
> >
> >
> > -----------------------------------------------------------------------
> >-
> >
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.1.394 / Virus Database: 268.10.5/406 - Release Date:
> > 8/2/2006
>
> Yahoo! Groups Links
>
>
>

--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com

"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna

I've just bought the V6 Softrock kit and it wil be my first attempt at
homebrew with SMT components.

Reading the instructions it says to use 0.015 inch 2% silver-bearing
solder.

Looking at suppliers here in the UK, I can find 0.4mm silver-bearing
solder in two forms:

1) 0.5% Cu: 3% Ag; 96.5% Sn - melting range 215 -218C

2) 36% Pb: 2% Ag; 62% Sn - melting range 178 - 190C

The lead free is cheaper because it comes in smaller reels and because
lead solders are slowly vanishing from Europe.  On the other hand it
needs to be a good deal hotter.

Which would you experts choose?

Norman Billingham, M0EBI.

----- Original Message -----

From: billingham_n

To: softrock40@yahoogroups.com

Sent: Friday, August 04, 2006 3:44 PM

Subject: [softrock40] Silver bearing solder?

I've just bought the V6 Softrock kit and it wil be my first attempt at
homebrew with SMT components.

Reading the instructions it says to use 0.015 inch 2% silver-bearing
solder.

Looking at suppliers here in the UK, I can find 0.4mm silver-bearing
solder in two forms:

1) 0.5% Cu: 3% Ag; 96.5% Sn - melting range 215 -218C

2) 36% Pb: 2% Ag; 62% Sn - melting range 178 - 190C

The lead free is cheaper because it comes in smaller reels and because
lead solders are slowly vanishing from Europe. On the other hand it
needs to be a good deal hotter.

Which would you experts choose?

Norman Billingham, M0EBI.

Hi Norman,

I would go with the lower temp solder. In case of mistake or
modification it is a lot easier to unsolder.

Jean-Claude, PJ2BVU

--- In softrock40@yahoogroups.com, "billingham_n" <n.billingham@...>
wrote:
>
> I've just bought the V6 Softrock kit and it wil be my first attempt at
> homebrew with SMT components.
>
> Reading the instructions it says to use 0.015 inch 2% silver-bearing
> solder.
>
> Looking at suppliers here in the UK, I can find 0.4mm silver-bearing
> solder in two forms:
>
> 1) 0.5% Cu: 3% Ag; 96.5% Sn - melting range 215 -218C
>
> 2) 36% Pb: 2% Ag; 62% Sn - melting range 178 - 190C
>
> The lead free is cheaper because it comes in smaller reels and because
> lead solders are slowly vanishing from Europe.  On the other hand it
> needs to be a good deal hotter.
>
> Which would you experts choose?
>
> Norman Billingham, M0EBI.
>

I have a built V4 and unbuilt V5. I would like to use either one for a
10.7 MHz IF. I did a search back through last fall and found only
occasional mentions of intentions to make an 10.7 IF SDR and some
notes that hinted that some experiments were done with V6/V7. Has
anyone arrived at a working set of components for V4 or V5? Is there a
summary somehwere of the work that has been done on the IF
modifications?

Thank you,
Jim

Hi Jim,


I have a V7.0 ( stock ) working as a 10.7 MHz IF SDR and it is working
great. The sensitivity is such that I can detect antenna noise when
an antenna is connected. The rest depends pretty much on the software
one is using, and the signal source receiver, an IC R7000 in my case.

The bottom line of the selection V5,V6,V7 depends largely on the desired
frequency coverage and the cheap available x-tals. ( fundamental,
divide by 2 or 4 ) at least in my case.

The v6 is, I believe better, in regard of image, I/Q suppression, as
the I and Q LO signals are not obtained via a R-C network. Though
I can reach better than 70 DB suppression for every frequency
within in the range ( 96 kHz sampling )


In spite of the v7.0 performance, I am disappointed in the performance
of the IC R7000 and I find myself having to get amplification for the IF
channel as well as for the front end. But that is another matter.

73 Rein W6/PA0ZN


kh6sky wrote:

>
>
> I have a built V4 and unbuilt V5. I would like to use either one for a
> 10.7 MHz IF. I did a search back through last fall and found only
> occasional mentions of intentions to make an 10.7 IF SDR and some
> notes that hinted that some experiments were done with V6/V7. Has
> anyone arrived at a working set of components for V4 or V5? Is there a
> summary somehwere of the work that has been done on the IF
> modifications?
>
> Thank you,
> Jim
>
>

Hello,

I am in a big learning curve now with so many possibilities in Ham Radio and
would like to know if there is information available on the theory of
operation of a I/Q demodulator as used in the SoftRock.

I believe knowing this will enable me to carry experiments even further.
Thanks!

Loren



If I do not dream then it can't come true!
Loren Moline WA7SKT  CN86cx
Member: ARRL, Pacific Northwest VHF Society #151

I don't know if you saw this but...
Here is an article from the SOFTROCK users group (this place) that talks
about what is going on...At least it is a place to start

Peter Hughes
N7BMG

THE SOFTROCK SDR KIT
Following a recent talk by Mark Francis of Waters and Stanton it was
clear that there was
significant interest in the club in the emerging technique of Software
Defined Radio (SDR). To their credit
W&S have begun to sell two new SDR products both originating from the
USA; the Flex-Radio is a £1000
plus off-the-shelf full featured HF transceiver system to be used in
conjunction with a high spec computer
and soundcard. Creating most interest however is the SoftRock
experimental SDR receiver which is
designed to introduce the amateur to the basics of SDR; it is available
as a kit costing about £30 from W&S
and comprises a 2 by 1 inch pcb and a few components including some
surface mount items. I have built 2
of these kits and offer here a few thoughts on the SoftRock receiver and
it’s underlying technology.
The SoftRock is SDR in it’s simplest form and superficially resembles a
direct conversion receiver
except that the bandwidth covers considerably more than the audio
frequencies of a DC receiver. It takes a
chunk of the RF spectrum and mixes it down to an IF centred around 0Hz,
ie DC; subsequent tuning,
filtering and demodulation to audio takes place in the computer and
soundcard under the control of one of
several SDR applications available over the web. The 40m version of
SoftRock has a 7.056MHz local
oscillator, virtually bang in the middle of the old 40m band. Were it
not for the use of Digital Signal
Processing (DSP) being used here we would have the usual direct
conversion problem of image signals
where for example two distinct signals at 7.066MHz and 7.046MHz will
both mix with the LO to produce
the same IF of 10khz. which would then be indistinguishable, ie 2
signals right on top of one another. SDR
overcomes the image problem by use of a technique known as IQ
demodulation; here the local oscillator
produces not one but two signals, both at the same frequency of 7.056MHz
but each differing in phase by
90º. Another term for a 90º phase difference is quadrature (since 90º is
a quarter of one cycle) - hence the
IQ, for In phase and Quadrature phase. What this means is that the
signals leaving the SoftRock en route to
the computer soundcard will be duplicated as quadrature copies and these
are kept apart in each of the stereo
channels of the soundcard.
So how does this technique distinguish between image signals? This all
happens inside the
computer as part of the crucial (and CPU intensive) process that
underpins much of DSP and modern
electronics, the Fast Fourier Transform. Sounds impressive but the FFT
can fortunately be treated on a
superficial level as a computer technique which takes a chunk of radio
spectrum in the time domain and
separates the complex mix of signals into individual frequency
components; it is this frequency spectrogram
that you see on your computer screen when operating SoftRock or other
SDRs. If we now look more closely
at our two 10khz image signals and concentrate particularly on the I and
Q copies we will see a difference;
and it is this difference which the computer exploits, in carrying out
the FFT, to separate the two images. In
short, if the I and Q signals are displayed on a 2 channel oscilloscope
it will be seen that the phase
relationship reverses between the upper and lower image; so if the Q
signal leads I in the upper image it will
lag in the lower. Thus the Q signal will differ by 180º in the two
images and it is this that enables the FFT
algorithm to separate the two image signals.
Figure 1 - Phase relationships of 2 I/Q image signals of identical
frequency, eg 7.046MHz and 7.066MHz
mixing with an LO signal at 7.056MHZ to produce image signals at 10 khz.
Demodulation in the SoftRock occurs in the software and uses the phasing
method; this avoids the
use of expensive crystal sideband filters. The method relies on 90º
phase shifts for opposite sideband

> -------- Original Message --------
> Subject: [softrock40] I/Q Demodulator theory
> From: "Loren Moline WA7SKT" <lmoline@...>
> Date: Sat, August 05, 2006 12:00 am
> To: softrock40@yahoogroups.com
>
>
>
>
>
>
> Hello,
>
>  I am in a big learning curve now with so many possibilities in Ham Radio and
>  would like to know if there is information available on the theory of
>  operation of a I/Q demodulator as used in the SoftRock.
>
>  I believe knowing this will enable me to carry experiments even further.
>  Thanks!
>
>  Loren
>
>  If I do not dream then it can't come true!
>  Loren Moline WA7SKT CN86cx
>  Member: ARRL, Pacific Northwest VHF Society #151
>
>

Peter,

Thanks! This is a great help.

Loren



If I do not dream then it can't come true!
Loren Moline WA7SKT  CN86cx
Member: ARRL, Pacific Northwest VHF Society #151





>From: peter@...
>Reply-To: softrock40@yahoogroups.com
>To: softrock40@yahoogroups.com
>Subject: RE: [softrock40] I/Q Demodulator theory
>Date: Fri, 04 Aug 2006 22:07:06 -0700
>
>I don't know if you saw this but...
>Here is an article from the SOFTROCK users group (this place) that talks
>about what is going on...At least it is a place to start
>
>Peter Hughes
>N7BMG
>
>THE SOFTROCK SDR KIT
>Following a recent talk by Mark Francis of Waters and Stanton it was
>clear that there was
>significant interest in the club in the emerging technique of Software
>Defined Radio (SDR). To their credit
>W&S have begun to sell two new SDR products both originating from the
>USA; the Flex-Radio is a £1000
>plus off-the-shelf full featured HF transceiver system to be used in
>conjunction with a high spec computer
>and soundcard. Creating most interest however is the SoftRock
>experimental SDR receiver which is
>designed to introduce the amateur to the basics of SDR; it is available
>as a kit costing about £30 from W&S
>and comprises a 2 by 1 inch pcb and a few components including some
>surface mount items. I have built 2
>of these kits and offer here a few thoughts on the SoftRock receiver and
>it’s underlying technology.
>The SoftRock is SDR in it’s simplest form and superficially resembles a
>direct conversion receiver
>except that the bandwidth covers considerably more than the audio
>frequencies of a DC receiver. It takes a
>chunk of the RF spectrum and mixes it down to an IF centred around 0Hz,
>ie DC; subsequent tuning,
>filtering and demodulation to audio takes place in the computer and
>soundcard under the control of one of
>several SDR applications available over the web. The 40m version of
>SoftRock has a 7.056MHz local
>oscillator, virtually bang in the middle of the old 40m band. Were it
>not for the use of Digital Signal
>Processing (DSP) being used here we would have the usual direct
>conversion problem of image signals
>where for example two distinct signals at 7.066MHz and 7.046MHz will
>both mix with the LO to produce
>the same IF of 10khz. which would then be indistinguishable, ie 2
>signals right on top of one another. SDR
>overcomes the image problem by use of a technique known as IQ
>demodulation; here the local oscillator
>produces not one but two signals, both at the same frequency of 7.056MHz
>but each differing in phase by
>90º. Another term for a 90º phase difference is quadrature (since 90º is
>a quarter of one cycle) - hence the
>IQ, for In phase and Quadrature phase. What this means is that the
>signals leaving the SoftRock en route to
>the computer soundcard will be duplicated as quadrature copies and these
>are kept apart in each of the stereo
>channels of the soundcard.
>So how does this technique distinguish between image signals? This all
>happens inside the
>computer as part of the crucial (and CPU intensive) process that
>underpins much of DSP and modern
>electronics, the Fast Fourier Transform. Sounds impressive but the FFT
>can fortunately be treated on a
>superficial level as a computer technique which takes a chunk of radio
>spectrum in the time domain and
>separates the complex mix of signals into individual frequency
>components; it is this frequency spectrogram
>that you see on your computer screen when operating SoftRock or other
>SDRs. If we now look more closely
>at our two 10khz image signals and concentrate particularly on the I and
>Q copies we will see a difference;
>and it is this difference which the computer exploits, in carrying out
>the FFT, to separate the two images. In
>short, if the I and Q signals are displayed on a 2 channel oscilloscope
>it will be seen that the phase
>relationship reverses between the upper and lower image; so if the Q
>signal leads I in the upper image it will
>lag in the lower. Thus the Q signal will differ by 180º in the two
>images and it is this that enables the FFT
>algorithm to separate the two image signals.
>Figure 1 - Phase relationships of 2 I/Q image signals of identical
>frequency, eg 7.046MHz and 7.066MHz
>mixing with an LO signal at 7.056MHZ to produce image signals at 10 khz.
>Demodulation in the SoftRock occurs in the software and uses the phasing
>method; this avoids the
>use of expensive crystal sideband filters. The method relies on 90º
>phase shifts for opposite sideband
>
> > -------- Original Message --------
> > Subject: [softrock40] I/Q Demodulator theory
> > From: "Loren Moline WA7SKT" <lmoline@...>
> > Date: Sat, August 05, 2006 12:00 am
> > To: softrock40@yahoogroups.com
> >
> >
> >
> >
> >
> >
> > Hello,
> >
> >  I am in a big learning curve now with so many possibilities in Ham
>Radio and
> >  would like to know if there is information available on the theory of
> >  operation of a I/Q demodulator as used in the SoftRock.
> >
> >  I believe knowing this will enable me to carry experiments even
>further.
> >  Thanks!
> >
> >  Loren
> >
> >  If I do not dream then it can't come true!
> >  Loren Moline WA7SKT CN86cx
> >  Member: ARRL, Pacific Northwest VHF Society #151
> >
> >
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>

KD5NWA <KD5NWA@...>

Hey, I'll take two as well. Thanks for your suggestion and efforts.

Ken,
KZ4Y

I will be making a purchase of a Mini-Circuits Power Splitter for use in
making SDR circuits. Right now I have a commitment for 69 units, if we can
hit the 100 quantity the price drops $.50 per unit. See the description
below;

Mini-Circuits makes a SMT signal splitter that is quite useful for use in
SDR radios or in transmitters.  I'm thinking of buying some of these
devices from Mini-Circuits and thought if others were interested to the
point where we could make the 25 or 100 unit pricing we could save a lot of
money.
The unit price is $15.10 but at the 25 quantity order the part cost $2.64
each, and at 100 pricing its $2.15 each. The part is rated 5MHz to 1 GHz
with very flat response in the whole range.

The device specs are listed below, I'm looking at the SBTC-2-10L+ device for
the buy.

< http://www.minicircuits.com/SBTC-2-10_10L.pdf  >

I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make  
nothing on the deal but then I don't want to loose anything either.

Shipping cost will be determined by the number of parts ordered. Mailing
fees will be the cost of a padded envelope + stamp cost, Internaltional
orders are $.90 + the cost of a padded envelope.

If interested let me know how may you are interested in, and if we get a
sufficient desired quantity we could save some money.

I'm also thinking of buying an additional device, the Gali 74+ MMIC it's
pricey but the specs are quite good.  I would need to reach a quantity of
25 before ordering, at that the price drops to $2.35 each.

2.5dB noise
DS-1GHz flat response, usable to 4GHz
+38 dBm IP3
25 dB gain
19.2 dBm Power out
unconditionally stable
<
http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=Gali&searchtype=mode\
lfamily&x=0&y=0
>

I'm also considering another device if there is sufficient interest, its a
transformer similar to the one we are purchasing but has a 60KHz to 300MHz
range a 1:4 turns ratio to a center tapped secondary. I could be quite
handy for QSD circuits. The part number is ADT4-6T from Mini-circuits and
the cost is $4.50 at Quantity 10, double that price for smaller quantities
so I will not order it unless there is sufficient interes to get the
quantity up to 10 units, I want 5 of them myself.

<
http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=adt4-6t&searchtype=m\
odelfamily&x=0&y=0
>


Let me know by Monday night if you are interested and the quantities that
you want. I will later post on my website a spreadsheet with the all the
cost and what each individual owes.

Thanks

--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com

"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna

I will be making a purchase of a Mini-Circuits Power Splitter for use in
making SDR circuits. Right now I have a commitment for 69 units, if we can
hit the 100 quantity the price drops $.50 per unit. See the description
below;

Mini-Circuits makes a SMT signal splitter that is quite useful for use in
SDR radios or in transmitters.  I'm thinking of buying some of these
devices from Mini-Circuits and thought if others were interested to the
point where we could make the 25 or 100 unit pricing we could save a lot of
money.
The unit price is $15.10 but at the 25 quantity order the part cost $2.64
each, and at 100 pricing its $2.15 each. The part is rated 5MHz to 1 GHz
with very flat response in the whole range.

The device specs are listed below, I'm looking at the SBTC-2-10L+ device for
the buy.

<http://www.minicircuits.com/SBTC-2-10_10L.pdf  >

I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make  
nothing on the deal but then I don't want to loose anything either.

Shipping cost will be determined by the number of parts ordered. Mailing
fees will be the cost of a padded envelope + stamp cost, Internaltional
orders are $.90 + the cost of a padded envelope.

If interested let me know how may you are interested in, and if we get a
sufficient desired quantity we could save some money.

I'm also thinking of buying an additional device, the Gali 74+ MMIC it's
pricey but the specs are quite good.  I would need to reach a quantity of
25 before ordering, at that the price drops to $2.35 each.

2.5dB noise
DS-1GHz flat response, usable to 4GHz
+38 dBm IP3
25 dB gain
19.2 dBm Power out
unconditionally stable

Let me know by Monday night if you are interested and the quantities that
you want. I will later post on my website a spreadsheet with the all the
cost and what each individual owes.

Thanks

--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com

"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna

Hi Cecil,

I'd be in for 4 of them at the $2.64 price...

thanks and 73,
ben, KD5BYB


KD5NWA wrote:
>
>
> Mini-Circuits makes a SMT signal splitter that is quite useful for use in
> SDR radios or in transmitters. I'm thinking of buying some of these
> devices from Mini-Circuits and thought if others were interested to the
> point where we could make the 25 unit pricing we could save a lot of money.
> The unit price is $15.10 but at the 25 quantity order the part cost $2.64
> each. The part is rated 5MHz to 1 GHz with very flat response in the whole
> range.
>
> The device specs are listed below, I'm looking at the SBTC-2-10L+ device
> for
> the buy.
>
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf> >
>
> I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make
> nothing on the deal but then I don't want to loose anything either.
>
> Shipping cost will be determined by the number of parts ordered. Mailing
> fees will be the cost of a padded envelope + stamp cost, Internaltional
> orders are $.90 + the cost of a padded envelope.
>
> If interested let me know how may you are interested in, and if we get a
> sufficient desired quantity I can make a descision to make the buy.
>
> Thanks
>
> --
>
> Cecil
> KD5NWA
> www.qrpradio.com www.hpsdr.com
>
> "Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna
>
>
> ------------------------------------------------------------------------
>
> Subject:
> Re: [QRP-L] Surface Mount Power Splitter Wanted
> From:
> Ceciliio A Bayona <kd5nwa@...>
> Date:
> Thu, 3 Aug 2006 07:06:54 -0500
> To:
> Leon Heller <leon.heller@...>
>
> To:
> Leon Heller <leon.heller@...>
> CC:
> qrp-l@...
>
>
> $1.69 is the 1000 price, a more realistic price is $2.64 for qty 25 of
> the "L" part.
>
> I would be interested in a couple of these things also, I will think
> about it and by this weekend decide if I want to make a group purchase
> on the item.
>
> I'll figure the cost and see if there is enough interest in some of the
> SDR list, and I will post back after a decision is made. I will looking
> at the SBCT-2-10L+ for the buy.
>
> I would sell these if I do at Cost+Shipping+PayPal fees, I will make
> nothing on the deal but then I don't want to loose anything either.
>
> Thanks
>
> On Aug 3, 2006, at 2:07 AM, Leon Heller wrote:
>
>> ----- Original Message ----- From: "Kurt Loken" <ae6uj@...>
>> To: <qrp-l@...>
>> Sent: Thursday, August 03, 2006 5:10 AM
>> Subject: [QRP-L] Surface Mount Power Splitter Wanted
>>
>>
>> Hello All,
>>
>> Any one know where I could buy one of these
>> Minicurcuit surface mount power splitters for the
>> price on the spec sheet ($1.69)?  Looks like they want
>> $15 if I try to buy 1.
>>
>> http://www.minicircuits.com/SBTC-2-10_10L.pdf
>>
>> The last time I needed a few mixers from MCL I bought 25 pieces to get
>> a good price on them, kept some for myself and sold the unwanted ones
>> to other hams. I got my mixers for nothing, and the people who bought
>> them got them much cheaper than they could get them from the usual
>> suppliers.
>>
>> 73, Leon
>> ______________________________________________________________
>> QRP-L mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:QRP-L@...
>
> ______________________________________________________________
> QRP-L mailing list
> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:QRP-L@...
>
>
> ------------------------------------------------------------------------
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.10.5/406 - Release Date: 8/2/2006




Yahoo! Groups Links

The good news is that all three items have met the minimum order point so
they will be ordered. On the power splitter we have not hit the 100 mark to
get additional discount, but we are getting closer, right now we are up to
71 units.

I will be updating a spreadsheet in the area linked below to reflect the
status of peoples orders. For those that do not have Excell or Open Office,
I will create a PDF version later and update both often.

< http://www.hpsdr.com/Public/Projects/Hardware%20Development/Mini-Circuits/
>

Thanks


On Saturday 05 August 2006 14:02, Rein A. Smit wrote:
>      Hi Cecil,
>
>
> I like to modify my previous Power splitter order from 2 to 4
>
>
>
> Order for    4 ea.  Gali 74+ MMIC
>               2 ea.  ADT4-6T
>
> This beats trying to order these items as an individual!
>
> 73 Rein W6/PA0ZN
>
>
>
>
> KD5NWA wrote:
>
>
>
>
>
> Yahoo! Groups Links
>
>
>

--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com

"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna

I will be making a purchase of a Mini-Circuits Power Splitter for use in making SDR circuits. Right now I have a commitment for 69 units, if we can hit the 100 quantity the price drops $.50 per unit. See the description below;
Mini-Circuits makes a SMT signal splitter that is quite useful for use in SDR radios or in transmitters.  I'm thinking of buying some of these devices from Mini-Circuits and thought if others were interested to the point where we could make the 25 or 100 unit pricing we could save a lot of money. The unit price is $15.10 but at the 25 quantity order the part cost $2.64 each, and at 100 pricing its $2.15 each. The part is rated 5MHz to 1 GHz with very flat response in the whole range.
The device specs are listed below, I'm looking at the SBTC-2-10L+ device for the buy.
< http://www.minicircuits.com/SBTC-2-10_10L.pdf  >
I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make  
nothing on the deal but then I don't want to loose anything either.
Shipping cost will be determined by the number of parts ordered. Mailing fees will be the cost of a padded envelope + stamp cost, Internaltional orders are $.90 + the cost of a padded envelope.
If interested let me know how may you are interested in, and if we get a sufficient desired quantity we could save some money.
I'm also thinking of buying an additional device, the Gali 74+ MMIC it's pricey but the specs are quite good.  I would need to reach a quantity of 25 before ordering, at that the price drops to $2.35 each.
2.5dB noise
DS-1GHz flat response, usable to 4GHz
+38 dBm IP3
25 dB gain
19.2 dBm Power out
unconditionally stable
< http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=Gali&searchtype=modelfamily&x=0&y=0 

I'm also considering another device if there is sufficient interest, its a transformer similar to the one we are purchasing but has a 60KHz to 300MHz range a 1:4 turns ratio to a center tapped secondary. I could be quite handy for QSD circuits. The part number is ADT4-6T from Mini-circuits and the cost is $4.50 at Quantity 10, double that price for smaller quantities so I will not order it unless there is sufficient interes to get the quantity up to 10 units, I want 5 of them myself.
< http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=adt4-6t&searchtype=modelfamily&x=0&y=0 

Let me know by Monday night if you are interested and the quantities that you want. I will later post on my website a spreadsheet with the all the cost and what each individual owes.
Thanks

---

Subject: Mini-Circuits Purchase of "Power Splitter"

From: KD5NWA <kd5nwa@...>

Date: Sat, 5 Aug 2006 12:56:39 -0500

To: hpsdr@...

To: hpsdr@...

I will be making a purchase of a Mini-Circuits Power Splitter for use in making SDR circuits. Right now I have a commitment for 69 units, if we can hit the 100 quantity the price drops $.50 per unit. See the description below;
Mini-Circuits makes a SMT signal splitter that is quite useful for use in SDR radios or in transmitters.  I'm thinking of buying some of these devices from Mini-Circuits and thought if others were interested to the point where we could make the 25 or 100 unit pricing we could save a lot of money. The unit price is $15.10 but at the 25 quantity order the part cost $2.64 each, and at 100 pricing its $2.15 each. The part is rated 5MHz to 1 GHz with very flat response in the whole range.
The device specs are listed below, I'm looking at the SBTC-2-10L+ device for the buy.
<http://www.minicircuits.com/SBTC-2-10_10L.pdf  >
I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make  
nothing on the deal but then I don't want to loose anything either.
Shipping cost will be determined by the number of parts ordered. Mailing fees will be the cost of a padded envelope + stamp cost, Internaltional orders are $.90 + the cost of a padded envelope.
If interested let me know how may you are interested in, and if we get a sufficient desired quantity we could save some money.
I'm also thinking of buying an additional device, the Gali 74+ MMIC it's pricey but the specs are quite good. I would need to reach a quantity of 25 before ordering, at that the price drops to $2.35 each.
2.5dB noise
DS-1GHz flat response, usable to 4GHz
+38 dBm IP3
25 dB gain
19.2 dBm Power out
unconditionally stable
Let me know by Monday night if you are interested and the quantities that you want. I will later post on my website a spreadsheet with the all the cost and what each individual owes.
Thanks

---

Subject: Re: [softrock40] Fwd: Re: [QRP-L] Surface Mount Power Splitter Wanted

From: Ben Hall <kd5byb@...>

Date: Fri, 04 Aug 2006 13:32:39 -0500

To: softrock40@yahoogroups.com

To: softrock40@yahoogroups.com

Hi Cecil,
I'd be in for 4 of them at the $2.64 price...
thanks and 73,
ben, KD5BYB
KD5NWA wrote:

Mini-Circuits makes a SMT signal splitter that is quite useful for use in
SDR radios or in transmitters. I'm thinking of buying some of these
devices from Mini-Circuits and thought if others were interested to the
point where we could make the 25 unit pricing we could save a lot of money.
The unit price is $15.10 but at the 25 quantity order the part cost $2.64
each. The part is rated 5MHz to 1 GHz with very flat response in the whole
range.
The device specs are listed below, I'm looking at the SBTC-2-10L+ device for
the buy.
<http://www.minicircuits.com/SBTC-2-10_10L.pdf <http://www.minicircuits.com/SBTC-2-10_10L.pdf> >
I would sell these at Cost+Shipping+PayPal fees+ Mailing fees, I will make nothing on the deal but then I don't want to loose anything either.
Shipping cost will be determined by the number of parts ordered. Mailing
fees will be the cost of a padded envelope + stamp cost, Internaltional
orders are $.90 + the cost of a padded envelope.
If interested let me know how may you are interested in, and if we get a
sufficient desired quantity I can make a descision to make the buy.
Thanks
-- Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com
"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna
------------------------------------------------------------------------
Subject:
Re: [QRP-L] Surface Mount Power Splitter Wanted
From:
Ceciliio A Bayona <kd5nwa@...>
Date:
Thu, 3 Aug 2006 07:06:54 -0500
To:
Leon Heller <leon.heller@...>
To:
Leon Heller <leon.heller@...>
CC:
qrp-l@...
$1.69 is the 1000 price, a more realistic price is $2.64 for qty 25 of the "L" part.
I would be interested in a couple of these things also, I will think about it and by this weekend decide if I want to make a group purchase on the item.
I'll figure the cost and see if there is enough interest in some of the SDR list, and I will post back after a decision is made. I will looking at the SBCT-2-10L+ for the buy.
I would sell these if I do at Cost+Shipping+PayPal fees, I will make nothing on the deal but then I don't want to loose anything either.
Thanks
On Aug 3, 2006, at 2:07 AM, Leon Heller wrote:

----- Original Message ----- From: "Kurt Loken" <ae6uj@...>
To: <qrp-l@...>
Sent: Thursday, August 03, 2006 5:10 AM
Subject: [QRP-L] Surface Mount Power Splitter Wanted
Hello All,
Any one know where I could buy one of these
Minicurcuit surface mount power splitters for the
price on the spec sheet ($1.69)? Looks like they want
$15 if I try to buy 1.
http://www.minicircuits.com/SBTC-2-10_10L.pdf
The last time I needed a few mixers from MCL I bought 25 pieces to get a good price on them, kept some for myself and sold the unwanted ones to other hams. I got my mixers for nothing, and the people who bought them got them much cheaper than they could get them from the usual suppliers.
73, Leon
______________________________________________________________
QRP-L mailing list
Home: http://mailman.qth.net/mailman/listinfo/qrp-l
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:QRP-L@...

______________________________________________________________
QRP-L mailing list
Home: http://mailman.qth.net/mailman/listinfo/qrp-l
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:QRP-L@...
------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.394 / Virus Database: 268.10.5/406 - Release Date: 8/2/2006

Yahoo! Groups Links

Please count me in as well for 10 units.

Thank You,  Jeff Peters, K9JP

--- KD5NWA <KD5NWA@...> wrote:

> I will be making a purchase of a Mini-Circuits Power
> Splitter for use in
> making SDR circuits. Right now I have a commitment
> for 69 units, if we can
> hit the 100 quantity the price drops $.50 per unit.
> See the description
> below;
>
> Mini-Circuits makes a SMT signal splitter that is
> quite useful for use in
> SDR radios or in transmitters.  I'm thinking of
> buying some of these
> devices from Mini-Circuits and thought if others
> were interested to the
> point where we could make the 25 or 100 unit pricing
> we could save a lot of
> money.
> The unit price is $15.10 but at the 25 quantity
> order the part cost $2.64
> each, and at 100 pricing its $2.15 each. The part is
> rated 5MHz to 1 GHz
> with very flat response in the whole range.
>
> The device specs are listed below, I'm looking at
> the SBTC-2-10L+ device for
> the buy.
>
> < http://www.minicircuits.com/SBTC-2-10_10L.pdf  >
>
> I would sell these at Cost+Shipping+PayPal fees+
> Mailing fees, I will make  
> nothing on the deal but then I don't want to loose
> anything either.
>
> Shipping cost will be determined by the number of
> parts ordered. Mailing
> fees will be the cost of a padded envelope + stamp
> cost, Internaltional
> orders are $.90 + the cost of a padded envelope.
>
> If interested let me know how may you are interested
> in, and if we get a
> sufficient desired quantity we could save some
> money.
>
> I'm also thinking of buying an additional device,
> the Gali 74+ MMIC it's
> pricey but the specs are quite good.  I would need
> to reach a quantity of
> 25 before ordering, at that the price drops to $2.35
> each.
>
> 2.5dB noise
> DS-1GHz flat response, usable to 4GHz
> +38 dBm IP3
> 25 dB gain
> 19.2 dBm Power out
> unconditionally stable
> <
>
http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=Gali&searchtype=mode\
lfamily&x=0&y=0
>
> >
>
> I'm also considering another device if there is
> sufficient interest, its a
> transformer similar to the one we are purchasing but
> has a 60KHz to 300MHz
> range a 1:4 turns ratio to a center tapped
> secondary. I could be quite
> handy for QSD circuits. The part number is ADT4-6T
> from Mini-circuits and
> the cost is $4.50 at Quantity 10, double that price
> for smaller quantities
> so I will not order it unless there is sufficient
> interes to get the
> quantity up to 10 units, I want 5 of them myself.
>
> <
>
http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=adt4-6t&searchtype=m\
odelfamily&x=0&y=0
>
> >
>
>
> Let me know by Monday night if you are interested
> and the quantities that
> you want. I will later post on my website a
> spreadsheet with the all the
> cost and what each individual owes.
>
> Thanks
>
> --
>
> Cecil
> KD5NWA
> www.qrpradio.com www.hpsdr.com
>
> "Life is short and I'm too busy tipping Sacred
> Cows." Don Seglio Batuna
> > From: KD5NWA <kd5nwa@...>
> To: hpsdr@...
> Subject: Mini-Circuits Purchase of "Power Splitter"
> Date: Sat, 5 Aug 2006 12:56:39 -0500
>
> I will be making a purchase of a Mini-Circuits Power
> Splitter for use in
> making SDR circuits. Right now I have a commitment
> for 69 units, if we can
> hit the 100 quantity the price drops $.50 per unit.
> See the description
> below;
>
> Mini-Circuits makes a SMT signal splitter that is
> quite useful for use in
> SDR radios or in transmitters.  I'm thinking of
> buying some of these
> devices from Mini-Circuits and thought if others
> were interested to the
> point where we could make the 25 or 100 unit pricing
> we could save a lot of
> money.
> The unit price is $15.10 but at the 25 quantity
> order the part cost $2.64
> each, and at 100 pricing its $2.15 each. The part is
> rated 5MHz to 1 GHz
> with very flat response in the whole range.
>
> The device specs are listed below, I'm looking at
> the SBTC-2-10L+ device for
> the buy.
>
> <http://www.minicircuits.com/SBTC-2-10_10L.pdf  >
>
> I would sell these at Cost+Shipping+PayPal fees+
> Mailing fees, I will make  
> nothing on the deal but then I don't want to loose
> anything either.
>
> Shipping cost will be determined by the number of
> parts ordered. Mailing
> fees will be the cost of a padded envelope + stamp
> cost, Internaltional
> orders are $.90 + the cost of a padded envelope.
>
> If interested let me know how may you are interested
> in, and if we get a
> sufficient desired quantity we could save some
> money.
>
> I'm also thinking of buying an additional device,
> the Gali 74+ MMIC it's
> pricey but the specs are quite good.  I would need
> to reach a quantity of
> 25 before ordering, at that the price drops to $2.35
> each.
>
> 2.5dB noise
> DS-1GHz flat response, usable to 4GHz
> +38 dBm IP3
> 25 dB gain
> 19.2 dBm Power out
> unconditionally stable
>
> Let me know by Monday night if you are interested
> and the quantities that
> you want. I will later post on my website a
> spreadsheet with the all the
> cost and what each individual owes.
>
> Thanks
>
> --
>
> Cecil
> KD5NWA
> www.qrpradio.com www.hpsdr.com
>
> "Life is short and I'm too busy tipping Sacred
> Cows." Don Seglio Batuna
> > To: softrock40@yahoogroups.com
> From: Ben Hall <kd5byb@...>
> Date: Fri, 04 Aug 2006 13:32:39 -0500
> Subject: Re: [softrock40] Fwd: Re: [QRP-L] Surface
> Mount Power Splitter Wanted
>
> Hi Cecil,
>
> I'd be in for 4 of them at the $2.64 price...
>
> thanks and 73,
> ben, KD5BYB
>
>
> KD5NWA wrote:
> >
> >
> > Mini-Circuits makes a SMT signal splitter that is
> quite useful for use in
> > SDR radios or in transmitters. I'm thinking of
> buying some of these
> > devices from Mini-Circuits and thought if others
> were interested to the
> > point where we could make the 25 unit pricing we
> could save a lot of money.
> > The unit price is $15.10 but at the 25 quantity
> order the part cost $2.64
> > each. The part is rated 5MHz to 1 GHz with very
> flat response in the whole
> > range.
> >
> > The device specs are listed below, I'm looking at
> the SBTC-2-10L+ device
> > for
> > the buy.
> >
> > <http://www.minicircuits.com/SBTC-2-10_10L.pdf
> > <http://www.minicircuits.com/SBTC-2-10_10L.pdf> >
> >
> > I would sell these at Cost+Shipping+PayPal fees+
> Mailing fees, I will make
> > nothing on the deal but then I don't want to loose
> anything either.
> >
> > Shipping cost will be determined by the number of
> parts ordered. Mailing
> > fees will be the cost of a padded envelope + stamp
> cost, Internaltional
> > orders are $.90 + the cost of a padded envelope.
> >
> > If interested let me know how may you are
> interested in, and if we get a
> > sufficient desired quantity I can make a descision
> to make the buy.
> >
> > Thanks
> >
> > --
> >
> > Cecil
> > KD5NWA
> > www.qrpradio.com www.hpsdr.com
> >
> > "Life is short and I'm too busy tipping Sacred
> Cows." Don Seglio Batuna
> >
> >
> >
>
------------------------------------------------------------------------
> >
> > Subject:
> > Re: [QRP-L] Surface Mount Power Splitter Wanted
> > From:
> > Ceciliio A Bayona <kd5nwa@...>
> > Date:
> > Thu, 3 Aug 2006 07:06:54 -0500
> > To:
> > Leon Heller <leon.heller@...>
> >
> > To:
> > Leon Heller <leon.heller@...>
> > CC:
> > qrp-l@...
> >
> >
> > $1.69 is the 1000 price, a more realistic price is
> $2.64 for qty 25 of
> > the "L" part.
> >
> > I would be interested in a couple of these things
> also, I will think
> > about it and by this weekend decide if I want to
> make a group purchase
> > on the item.
> >
> > I'll figure the cost and see if there is enough
> interest in some of the
> > SDR list, and I will post back after a decision is
> made. I will looking
> > at the SBCT-2-10L+ for the buy.
> >
> > I would sell these if I do at Cost+Shipping+PayPal
> fees, I will make
> > nothing on the deal but then I don't want to loose
> anything either.
> >
> > Thanks
> >
> > On Aug 3, 2006, at 2:07 AM, Leon Heller wrote:
> >
> >> ----- Original Message ----- From: "Kurt Loken"
> <ae6uj@...>
> >> To: <qrp-l@...>
> >> Sent: Thursday, August 03, 2006 5:10 AM
> >> Subject: [QRP-L] Surface Mount Power Splitter
> Wanted
> >>
> >>
> >> Hello All,
> >>
> >> Any one know where I could buy one of these
> >> Minicurcuit surface mount power splitters for the
> >> price on the spec sheet ($1.69)?  Looks like they
> want
> >> $15 if I try to buy 1.
> >>
> >> http://www.minicircuits.com/SBTC-2-10_10L.pdf
> >>
> >> The last time I needed a few mixers from MCL I
> bought 25 pieces to get
> >> a good price on them, kept some for myself and
> sold the unwanted ones
> >> to other hams. I got my mixers for nothing, and
> the people who bought
> >> them got them much cheaper than they could get
> them from the usual
> >> suppliers.
> >>
> >> 73, Leon
> >>
>
______________________________________________________________
> >> QRP-L mailing list
> >> Home:
> http://mailman.qth.net/mailman/listinfo/qrp-l
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:QRP-L@...
> >
> >
>
______________________________________________________________
> > QRP-L mailing list
> > Home:
> http://mailman.qth.net/mailman/listinfo/qrp-l
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:QRP-L@...
> >
> >
> >
>
------------------------------------------------------------------------
> >
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.1.394 / Virus Database: 268.10.5/406 -
> Release Date: 8/2/2006
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around
http://mail.yahoo.com

> I will be making a purchase of a Mini-Circuits Power
> Splitter for use in making SDR circuits.

Hi Cecil:

This sounds interesting, and it's great of you to set this
up, but for those of us with a limited background in these
circuits, I wonder if you would mind writing up how you
envision using these items. I think it's clear from the docs
how these parts work and what they do, but I and perhaps
others would like to know what we can do with them.

Thanks.

-Pete
WB2QLL
Somers, WI

--- In softrock40@yahoogroups.com, Ben Hall <kd5byb@...> wrote:
>
> Hi Ted,
>
> I has very bad luck with this soundcard as well, noting the same
problem
> you've seen below.  My solution was to replace it with an M-Audio Delta
> 44 soundcard which works perfectly.
>
> thanks and 73,
> ben
>
>
> ed.lark wrote:
> >
> >
> > Hi all
> >         This soundcard with v6 gives less than 20 db image
> > rejection.
> >   Q/I amplitude equal but phase + 100deg @ -20khz
> >  -60 deg @ +20khz  +60 @ 0khz, 0deg@+/ <mailto:0deg@+/> - 14khz
> >     Suggestions(polite please!). I have  -1 bit LH channel
> >  set.
> >          Help anyone?
> >                        Cheers
> >                              Ted. Lark
> > G3CWC
>

Hi.
you should have -1 bit RH channel
Philip g7jur.

I must temporarily put a hold on the parts orders at this time and not accept
any more new orders. The present orders are beyond what could afford to part
with until I can get my money back.

Sorry about that, but right now the order is over $600.

--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com
"A persons greatness is measured by how they treat those persons that they
have the power to harm." Cecil Bayona

Hi Cecil,

I would be interested in 2 each of the Gali 74+ and the ADT4-6T.

Thanks, and best regards,

-- Don Ward
Raleigh, NC

----- Original Message -----
From: "KD5NWA" <kd5nwa@...>
To: <hpsdr@...>
Sent: Saturday, August 05, 2006 2:17 PM
Subject: [hpsdr] Mini-Circuits Purchase of "Power Splitter"


***** High Performance Software Defined Radio Discussion List *****

Sorry, I forgot to put a link to the MMIC device and mention a second
optional part that I would order if the quantities are sufficient, the
information is below;

I'm also thinking of buying an additional device, the Gali 74+ MMIC it's
pricey but the specs are quite good. I would need to reach a quantity of
25 before ordering, at that the price drops to $2.35 each.

2.5dB noise
DS-1GHz flat response, usable to 4GHz
+38 dBm IP3
25 dB gain
19.2 dBm Power out
unconditionally stable
<
http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=Gali&searchtype=mode\
lfamily&x=0&y=0
>

I'm also considering another device if there is sufficient interest, its a
transformer similar to the one we are purchasing but has a 60KHz to 300MHz
range a 1:4 turns ratio to a center tapped secondary. I could be quite
handy for QSD circuits. The part number is ADT4-6T from Mini-circuits and
the cost is $4.50 at Quantity 10, double that price for smaller quantities
so I will not order it unless there is sufficient interes to get the
quantity up to 10 units, I want 5 of them myself.

<
http://www.minicircuits.com/cgi-bin/inquery.cgi?querystring=adt4-6t&searchtype=m\
odelfamily&x=0&y=0
>


Let me know by Monday night if you are interested and the quantities that
you want. I will later post on my website a spreadsheet with the all the
cost and what each individual owes.

Thanks
--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com

"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna

_______________________________________________
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To post msg: hpsdr@...
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Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/

G'day

It was interesting to see the recent emails about how/why I and Q signals
from a direct conversion receiver front-end are used in software defined
radios.

My friend Phil VK6APH has just finished the draft of an article called 'Why
I and Q?, which comes complete with about eight simple diagrams (a picture
IS really worth a thousand words in the case of I and Q).  This will feature
in our monthly Software Defined Radio column in the Radio Society of Great
Britain's 'RadCom' magazine, hopefully before the end of 2006.

After reading the draft, even I can fully understand the mysteries of I and
Q...


Vy 73

Steve, VK6VZ

Below is a link to the list of people who made last nights cutoff, the list is
an Excel file that can be opened in MS Office or Open Office. There is also a
PDF file for those that are Office challenged.

< http://www.hpsdr.com/Public/Projects/Hardware%20Development/Mini-Circuits/
>

Please verify your order, on Monday the order will be placed. Once I place the
order I will have a idea of the shipping cost and can start putting out final
figures for the order. I will accept PayPal and personal check, but don't
send anything until I put out the final figures.

I is also a good time to start sending me your shiping address so I can get
the mailing envelopes ready. Please send your confirmations and shipping
address to my email address kd5nwa at cox.net

Thanks
--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com
"A persons greatness is measured by how they treat those persons that they
have the power to harm." Cecil Bayona

I have used a number of the MMICs in Manhattan style prototyping, and
currently use the Gali-74 in one of my mass-produced kits. I use the MCL
recommended pad layout and have had no problems.  They do draw a lot of
current and run hot, but reliability has not been a problem.  In my
case, I didn't need the low-Z output, but all the lower power hi-Z
circuits I tried had problems with stability and radiating noise around
the PCB. When doing Manhattan style, I mount the thing vertically, and
just solder to the in/out pins which are sticking up in the air. The
ground tab is firmly mounted (and sinked) to the PCB ground plane.

Larry N8LP



na5n@... wrote:
>
> Gang,
> First, regarding my last post, I remembered I have some photos of a
> test set I built at work that shows the TCP-2-10 power splitters
> (well, at least a few pixels of the photos sorta shows them).  Located
> at:
> http://www.aoc.nrao.edu/~pharden/hobby/Hobby.shtml
> The power splitters are shown on the photos of the "4/P Test Set"
> under the 74MHz oscillator and the P-band sweep generator.  A couple
> of the MiniCircuit GALI amplifiers (discussed below) are shown on the
> noise source/ 1024MHz assembly.  All built manhattan style.
> KD5NWA kd5nwa at cox.net writes:
>> I'm also thinking of buying an additional device, the Gali 74+ MMIC it's
>> pricey but the specs are quite good.  I would need to reach a
>> quantity of
>> 25 before ordering, at that the price drops to $2.35 each.
>
>> 2.5dB noise
>> DS-1GHz flat response, usable to 4GHz
>> +38 dBm IP3
>> 25 dB gain
>> 19.2 dBm Power out
>> unconditionally stable
>
> I have used several of the GALI series of MMIC amplifiers, both at
> work and QRP projects built Manhattan.  The GALI series are SOT-23
> packages, and a bit nicer to use than ERA amplifiers, IMHO.
> MiniCircuits is one of those companies that consistently puts out
> great products.  It is my experience their published specs are very
> conservative - you'll actually get better performance than stated.
> Their specs are almost "worst case."
> However, all MMIC amplifiers are not exactly unconditionally stable,
> especially when used in homebrew built ugly or manhattan.  Without
> using the *exact* recommended PCB layout, they tend to oscillate in
> the 6-8 GHz region.  And loud, like around 0dBm or better.  Obviously,
> without a spectrum analyzer at those frequencies, you won't see it,
> except the output power of your desired signal will be much less than
> expected.  This is true of the ERA series as well.  The microwave
> oscillations can often be tamed by placing a poor-mans diplexer on the
> output of the amplifier to ground ... consisting of a 47-100pF cap and
> a 100 ohm resistor (in series) to ground for a cut-off frequency
> around 30MHz.  The cap sets the pole frequency AND blocks a dc path to
> ground from the amplifier output.  This places a more or less fixed
> 100 ohm load on the amplifier over all high frequencies, tending to
> make it more stable to prevent oscillations.  (Otherwise, at high
> frequencies, say >1GHz, the impedance gets high, high reflected power,
> and a feedback path for an oscillator).
> For general purpose amplifier applications, I use the GALI-3:
> GALI-3  dc-3GHz, Gain 22dB, P1dB +13dBm (max. output power) $1 qty 30
> If you need higher output power:
> GALI-5  dc-4GHz, Gain 21dB, P1dB +18dBm, $1.49 qty 30
> GALI-51 dc-4GHz, Gain 18dB, P1dB +18dBm, $1.49 qty 30
> The GALI numbers (GALI-1,2,3,33, etc.) simply specify the gain and
> output power.  Otherwise, they are pretty much identical.  Therefore,
> get the 99-cent ones with the gain you need over the $3 ones.
> As a general rule of thumb building ugly or manhattan, you start
> getting much above 20dB gain in a single MMIC package, you're asking
> for stability problems.  I would be real cautious with the 25dB
> GALI-74, unless it's going on a PCB with the proper layout.
> Speaking of MMIC amplifiers, such as the GALI series, the MiniCircuits
> website (www.minicircuits.com) shows the recommended biasing
> consisting of a low value resistor (usually <100R) and an ADCH-80 RF
> choke.  The chokes are like $2.75 each.  Trust me, you don't need the
> chokes.  They are used to equalize the broadband gain ... that is,
> keeps the gain more or less constant (flat) over the full dc-4GHz
> range.  When using the GALI amplifiers for HF, you are using them over
> a NARROW frequency range, for which gain compensation is not needed.
> Even if you're building an amplifier for the entire HF band to 30 MHz,
> that is still considered narrow band compared to the 4000MHz+
> bandwidth.  The choke is used primarily to increase the gain at the
> high end, where it would normally be sloping off.  Save your 3 bucks.
> And on the biasing resistors, there's a table showing the value of the
> biasing resistor to use with each device vs. the power supply voltage
> you are using.  The idea is to drop the voltage across the resistor to
> leave the proper 3.4-4.5v or so on the MMIC output pin.  There is no
> problem running  the MMICs off +12v directly.  The resistor values
> shown in the table are 1% precision resistors.  This is also not
> neccessary for most hobby applications, as we're not trying to set the
> gain within 0.2dB.  If the table says 53 ohms, a 51 ohm 5% will work
> just fine.  Save another dime.  Obviously, thru-hole or SMC resistors
> can be used.
> They are ESD sensitive devices, so do use the standard cautions for
> ESD devices, though they aren't overly sensitive.
> Which reminds me. The ESD parts I get at work have labels that says:
> "CAUTION! Use ESD Precautions."  So what is it?  A caution, or a
> pre-caution?  Pending clarification, I use both :-)
> MMIC amplifiers are neat.  The only disadvantage is they do tend to
> draw from 35-65mA (check the spec sheets).  Too much power to use in a
> QRP rig for the RF or IF amplifiers, but can be justified as a nice PA
> driver by ensuring it is powered on key-down only.  (Make sure your
> T-R switch providing +V on TX can source that much current).  The
> above applies to the ERA series as well.
> I prefer the GALI series for my homebrew work.  Though, ERA amps are
> sold in small quantities by hobby vendors over the GALIs.  If so, go
> for the ERAs.  It's mostly a packaging preference.  The SOT-23 package
> of the GALIs is fairly easy to work with, even when building ugly or
> manhattan.  Punching out the copper pads with a nibbling tool, you can
> space them nicely for the SOT-23 pin spacing.  Lastly, for MMIC
> devices, I prefer to use the thinner .031 copper clad, vs. the
> standard .063 thickness for the pads.  I have experienced oscillations
> with the thicker pads, presummably from the larger gap from the ground
> plane.
> (Extra credit: what frequency is a quarter-wavelenth at .063"?)
> For those wanting to play with MMICs, have fun, and hope the above
> first hand experience helps a bit.
> 72, Paul NA5N
>
> ______________________________________________________________
> QRP-L mailing list
> Home: http://mailman.qth.net/mailman/listinfo/qrp-l
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:QRP-L@...
>
>
>
______________________________________________________________
QRP-L mailing list
Home: http://mailman.qth.net/mailman/listinfo/qrp-l
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:QRP-L@...

I have put out a new spreadsheets with estimated cost of shipping and mailing cost guesses based on previous buys.

Due to an unexpected level of orders, exceeding $800 I will need to make some minor changes to the purchase procedure.

Last night I turned off any further orders due to the order being way beyond the money that I was planning and have available. I am turning it back on with the following conditions;

1. You send me the order

2. I email you back with the cost of your order.

3. You send me the money via PayPal, US funds only.

4. If I don't receive your money reasonably soon, then your order is dropped. 5. Estimate order time is 10PM Tuesday night my time CST USA. -6 Zulu

For others that already have placed your order, you can check your status, quantities, amount owed at the usual link.

< http://www.hpsdr.com/Public/Projects/Hardware%20Development/Mini-Circuits/ >

I encourage all to look at your entry and send the money via PayPal as soon as possible, this will insure that the order goes out Tuesday night rather than Friday night when I will have additional funds.

The PayPal address is CBayona@..., make sure you send US funds. You need to pay the amount in the PayPal total column.

If you can not send money via PayPal then I will accept a Postal Money Order, if from a foreign country make sure that it is in US funds. My address is as follows;

Cecil Bayona

503 Betty Street

Springdale, AR. 72762 USA

Again I encourage that you use PayPal so that I can make the purchase on Tuesday rather than Friday.

In a little while I will add a status column to the spreadsheet with the following status.

Conditional Order arrived after late and subject to being dropped due to non-payment. The order has not gone it yet.

Dropped The order has been dropped due to non-payment in time to place the order. The order has been place without your order.

Paid Order has been paid in full

Paid+ Order has been overpaid, and you will receive a refund.

Short Insufficient funds sent, parts will not be shipped until corrected.

Shipped Your parts have been mailed.

I will send a message again when the order has gone out, the order has arrived, and the items are shipping.

Thanks

--

Cecil

KD5NWA

www.qrpradio.com www.hpsdr.com

"Sacred Cows make the best Hamburger!" Don Seglio Batuna

Dear Cecil,

Dont know what it looks like to 'Office' boffins, but to 'Office
challenged' like myself in .pdf its a mystery.......

Pete.

--- In softrock40@yahoogroups.com, Cecil Bayona <KD5NWA@...> wrote:
>
> Below is a link to the list of people who made last nights cutoff,
the list is
> an Excel file that can be opened in MS Office or Open Office. There
is also a
> PDF file for those that are Office challenged.
>
> < http://www.hpsdr.com/Public/Projects/Hardware%20Development/Mini-
Circuits/
> >
>
> Please verify your order, on Monday the order will be placed. Once
I place the
> order I will have a idea of the shipping cost and can start putting
out final
> figures for the order. I will accept PayPal and personal check, but
don't
> send anything until I put out the final figures.
>

So far this month I have built and will have mailed by tomorrow,
August 7, twenty-three built v7.0 receivers.  My oldest order now
waiting to be filled was placed July 13.  By the end of this week I
should be at the point where built kit orders are filled within one
week.

Thanks for your built SoftRock orders and patience.

73,
Tony KB9YIG

I'll try to make it better tomorrow, you print the PDF files, and set the
pages side by side so they line up. The spreadsheet does not fit in one page.


On Sunday 06 August 2006 18:06, pete.last wrote:
> Dear Cecil,
>
> Dont know what it looks like to 'Office' boffins, but to 'Office
> challenged' like myself in .pdf its a mystery.......
>
> Pete.
>
> --- In softrock40@yahoogroups.com, Cecil Bayona <KD5NWA@...> wrote:
> > Below is a link to the list of people who made last nights cutoff,
>
> the list is
>
> > an Excel file that can be opened in MS Office or Open Office. There
>
> is also a
>
> > PDF file for those that are Office challenged.
> >
> > < http://www.hpsdr.com/Public/Projects/Hardware%20Development/Mini-
>
> Circuits/
>
> > Please verify your order, on Monday the order will be placed. Once
>
> I place the
>
> > order I will have a idea of the shipping cost and can start putting
>
> out final
>
> > figures for the order. I will accept PayPal and personal check, but
>
> don't
>
> > send anything until I put out the final figures.
>
> Yahoo! Groups Links
>
>
>

--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com


"Sacred Cows make the best Hamburger!" Don Seglio Batuna

All parts for the Delta 44 interface module kits are now in except for
the circuit boards that were shipped last Friday, August 4.  UPS
package tracking indicates the circuit boards will get to me on
Tuesday, August 8.  Wednesday, August 9, should see the first 100 of
the kit orders filled and mailed in small padded envelopes.  When the
circuit boards get to me I will build several modules to make sure
there are no problems for kit buyers.

Lots of kits are available after filling the present orders.

Thanks and 73,
Tony KB9YIG

It just keeps getting better. PayPal is charging bigger fees that they said
the rates are so I updated the list.

Also some are paying the wrong amount, if you are paying by PayPal you need to
use the amount in the PayPal Total column.

Also make sure you include your name and call letters with your PayPal
payment, there are a couple of payments that I have no clue who they are.

Nothing like a little excitement.
--

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com


"Sacred Cows make the best Hamburger!" Don Seglio Batuna

Hello--
My perennial components-FS list includes the following MMICs and
broadband amplifiers:

INTEGRATED CIRCUITS; MMICs-- Mix or match at $.50 each, $10.00 for 35
pieces, 100 pieces for only $20.00
********************************************************************************\
******
MRFIC0916  "Solid-state 12AT7" transistor cascode MMIC by Motorola;
100-2500 MHz. SMT package
***
MSA-0786 Hewlett-Packard MMIC broadband and stable RF amplifiers
featuring DC-2 GHz freq. response. These are taped and reeled and
feature leads configured for surface-mounted applications. Specs are
available at HP's web site (or with your order).  or at...
http://literature.agilent.com/litweb/pdf/5968-4716E.pdf
***
MSA-1105  Hewlett-Packard  MMIC broadband and stable RF amplifiers
featuring near-DC-1.3 GHz freq. response. These are taped and reeled
and feature leads configured for surface-mounted applications. Specs
are available at HP's web site (or with your order).  or at...
http://literature.agilent.com/litweb/pdf/5965-9557E.pdf
***
uPC1675G  NEC MMIC broadband RF amplifier, 1.9 GHz BW, 12 dB gain,
5.5 dB NF, Zin, Zout
matched for 50 ohms. Specs included. SOT-143 pkg.
**********************

Integrated circuits; broadband amplifiers and buffers:

LH0033G Fast unity-gain buffer IC features response of DC-100 MHz and
outputs of +/-10 volts into 50 ohms. In shallow 12-lead TO-8 style
pkg. National Semiconductor's app notes show a similar device
(LH0063) used as a 1-watt CW final amplifier-- you won't be able to
squeeze a full watt out of the LH0033G, though. Hard to find, and a
bargain at $1.00 apiece.

***
CLC220AI  ComLinear/National Semiconductor high-speed amplifier TO-8
pkg. $2.00 each
AD843JN   Analog Devices fast-settling op amp (34 MHz bandwidth);
8-pin DIP pkg.  $2.00 each
***
Postage is extra.

To peruse the entire components list, I'll send you a copy as an
e-mail attachment in Microsoft Word format
on your request.

73--

Brad  AA1IP


______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:QRP-L@...

--- In softrock40@yahoogroups.com, peter@... wrote:
>
> I don't know if you saw this but...
> Here is an article from the SOFTROCK users group (this place) that talks
> about what is going on...At least it is a place to start
>
> Peter Hughes
> N7BMG
>

In an earlier message I stated that this article is in the files
section as <softrock.doc> but it is now <softrock.pdf> 'cos the
diagrams weren't working.
Sorry for any confusion :-)

Stewart Rolfe, GW0ETF