Bob
If you haven't been advised, measure every thing before fitting then you don't
have to worry about this modern trend of poor identification of components. I
doubt you will find an issue with Tony's kits but measuring is best. A cheap OVA
meter costs 2 or 3 bucks and a simple cap bridge is easy to build. These two
bits of kit are worth there wieght in gold. Oh and most meters have diode and
transistor testers build in... remarkable when you think back to the darkages
when I were a lad.

good luck petefmt

--- In softrock40@yahoogroups.com, "Bob Segrest" <Bob.Segrest@...> wrote:
>
> Hello Tom,
>
>
>
> Thank you for the clarification.  I do appreciate the sanity check.
>
>
>
> I learned to read the colored bands 45 years ago but haven't been able to
> figure out chip labels without a map or meter.
>
>
>
> Bob
>
> KD4PWU
>
>
>
> From: softrock40@yahoogroups.com [mailto:softrock40@yahoogroups.com] On
> Behalf Of Thomas Bewick
> Sent: Wednesday, February 01, 2012 1:55 AM
> To: softrock40@yahoogroups.com
> Subject: Re: [softrock40] Resistors in the new 20m SoftRock_40_R receiver
> Kit ???
>
>
>
>
>
>
> On this page Tim's link goes to where it says "update" there is a link to a
> PDF with build instructions that Robby is still working on. that are just a
> draft copy.
>
> He also has the 1k resistors listed as 102, but like Tony said they are
> actually marked 1001, and the 10 ohm ones marked 10R0, Robby has marked as
> 100 in his instructions, as you discovered.
>
>
>
> 73,
>
> Tom
>
> N2BEW
>
> On Tue, Jan 31, 2012 at 11:31 PM, KQ8M <kq8m@...> wrote:
>
>
>
> Bob,
>
>
>
> As far as I know there is only a schematic and pictures of the board that is
> available right now. This is at http://www.wb5rvz.com/sdr/softrock_40_r/.
> The guys are working on the build instructions but I found the schematic and
> board pictures worked well for me. Also the schematic has been updated with
> the correct R1 value.
>
>
>
> Tim Herrick, KQ8M
>
> North Coast Contesters
>
> kq8m@...
>

Hello, Rob!

Long time no see, but how are you doing?

Before, I got your M0RZF 20w amp PCB, and it has been
working very well!. I have been enjoying digital mode
by using Ensemble RXTX + your 20w amp.
After built your 20w amp, I built 50w amp by RD16HHF1
paralell Push-pull.

>Dave
  Please refer to the URL
    http://www.m0rzf.talktalk.net/RobCentral/Softrock_20W.html
  MOSFET is RD16HHF1, not so expensive and working very well.

73, DE JA1TLH/Taka

That is a good point Alan. I tried (+1) but only briefly. I will try again this
evening and let it run some.

After looking a little more closely here is what I am seeing: The phase is a
straight line that stretches from roughly -9KHZ and 20deg to -14deg and -20 deg.
Looking again at the gain I see that it is actually very tightly grouped around
.99 and covers the same -9 to -14 Khz.
73 - Jerry

--- In softrock40@yahoogroups.com, "Alan" <alan4alan@...> wrote:
>
>
> ----- Original Message -----
> Subject: [softrock40] Re: Rocky RX I/Q Balance
>
>
> >
> > I am using the Creative soundcard so I set the delay to -1. Now I am
> > gathering some points on the IQ plots but they are all on the left side.
> > The gain is pretty well scattered and the phase is almost a vertical line.
>
> Jerry
>
> Have you tried +1?
> It is obvious when it is working right but the wrong setting sometimes looks
> as if it is trying.
>
> 73 Alan G4ZFQ
>

 

Hello, Rob!

Long time no see, but how are you doing?

Before, I got your M0RZF 20w amp PCB, and it has been
working very well!. I have been enjoying digital mode
by using Ensemble RXTX + your 20w amp.
After built your 20w amp, I built 50w amp by RD16HHF1
paralell Push-pull.

>Dave
Please refer to the URL
http://www.m0rzf.talktalk.net/RobCentral/Softrock_20W.html
MOSFET is RD16HHF1, not so expensive and working very well.

73, DE JA1TLH/Taka

-- John Williams
KE5SSH - ham since 2007
WQKA523 - GMRS for family use on the farm

These switches turn on faster than they turn off so when changing
which switch charges the capacitor depending on the wiring two
switches can be on at the same time shorting out, but even if there
are no switches shorting it on when it should be off and that
contributes to noise. I have not looked at the latest generation
SoftRocks to see if the problem is still there.

A couple of years back I did an experiment where I added extra logic
to a 10M SoftRock to prevent the switches from being on at the same
time another one is on and the noise level was reduced considerably.
Some switches turn off faster than they turn on insuring there is no
shorts but they are not interchangeable due to function and pin differences.
<
<http://thepartsplace.k5nwa.com/index.php?route=product/product&product_id=100>h\
ttp://thepartsplace.k5nwa.com/index.php?route=product/product&product_id=100
   >


At 02:45 PM 2/1/2012, you wrote:
>Hello Cecil,
>Very interested in your comments about the bus switches used in the
>softrock being 'break before make' and causing lots of noise at the
>higher frequencies. Its something I've been pondering over for a
>while. Can you explain further please?
>Thanks,
>Andrew
>
>--- In softrock40@yahoogroups.com, "cbayona.cb" <CBayona@...> wrote:
> >
> > Potentially there is room for improvement in the SoftRocks but as to
> > actual implementation that is another story.  As an example the FET
> > switches in the SoftRock are inexpensive but they are make before
> > break which causes a lot of noise at the higher frequencies, break
> > before make switches are available but they are not pin or function
> > compatible so it would take a re-design of the board.
> >
> > One can have doubts about this radio, as Bob mentions they have a
> > poor understanding of the importance of the sound card, so how then
> > could they better design the hardware if they have no clear
> > understanding of the concepts involved?
> >
> > Short of a schematic let someone else be first at buying it and see
> > what they received.
> >
> > At 08:08 AM 1/29/2012, you wrote:
> > >Hi Bob,
> > >
> > >I'd forgotten that!
> > >
> > >So, approach with caution, this newer model may be better but it
> may be wise
> > >to wait for an independent review.
> > >
> > >73 Alan G4ZFQ
> > >
> > >
> > >----- Original Message -----
> > >Subject: [softrock40] Re: SDRRadio
> > >
> > >
> > > > Hi Alan,
> > > >
> > > > Did you ever read Andy G4JNT's review of the CCW device in Radcom?
> > > >
> > > > Knowing him, I thought he was exceedingly kind, things like when using
> > > > Rocky the RX image rejection was 30dB AFTER software correction was
> > > > applied :)
> > > >
> > > > Other thing which I really love on their website is the
> comment about no
> > > > special sound card being needed and being 'optimised' for
> cheap devices.
> > > >
> > > > Sort of made me wonder if they actually knew anthing about SDR at all!
> > > >
> > >
> >
> > Cecil
> > k5nwa
> > <  <http://www.softrockradio.org/>http://www.softrockradio.org/ >
> > <  http://thepartsplace.k5nwa.com/ >
> > <  http://parts.softrockradio.org/ >
> >
> > Never take life seriously. Nobody gets out alive anyway.

--
Cecil
k5nwa
http://www.softrockradio.org/
http://thepartsplace.k5nwa.com/
http://parts.softrockradio.org/

Never take life seriously. Nobody gets out alive anyway.

Not understanding how it all works just yet, I have to ask.

Would a usb mixer work better than a sound card? I've seen a couple for under
$100.

If it has balanced inputs, this can help reducing the noise.

73, Mike

--- In softrock40@yahoogroups.com, "p38ah" <p38ah@...> wrote:
>
> Not understanding how it all works just yet, I have to ask.
>
> Would a usb mixer work better than a sound card? I've seen a couple for under
$100.
>

You would need to be more specific as to what device you mean.

The USB mixers I seen are analog mixers with USB control, that is
they combine several analog signals to create an output analog signal
that is a mixture of the inputs, this would not work at all since a
computer needs digital representation of the signals so it can do
math on the signals.

A sound card is used because it takes multiple analog signal and
converts them to digital form which your computer can read and can be
further processed to do frequency shift, image rejection, filtering,
and demodulation.

At 10:04 AM 2/2/2012, you wrote:
>Not understanding how it all works just yet, I have to ask.
>
>Would a usb mixer work better than a sound card? I've seen a couple
>for under $100.

--
Cecil
k5nwa
http://www.softrockradio.org/
http://thepartsplace.k5nwa.com/
http://parts.softrockradio.org/

Never take life seriously. Nobody gets out alive anyway.

This is the device that got me wondering.
http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG

I don't understand enough about sdr to add anything. I'm just wondering if a
device like this could be used "instead" of a sound card. Would it work better??

--- In softrock40@yahoogroups.com, cbayona <CBayona@...> wrote:
>
> You would need to be more specific as to what device you mean.
>
> The USB mixers I seen are analog mixers with USB control, that is
> they combine several analog signals to create an output analog signal
> that is a mixture of the inputs, this would not work at all since a
> computer needs digital representation of the signals so it can do
> math on the signals.
>
> A sound card is used because it takes multiple analog signal and
> converts them to digital form which your computer can read and can be
> further processed to do frequency shift, image rejection, filtering,
> and demodulation.
>
> At 10:04 AM 2/2/2012, you wrote:
> >Not understanding how it all works just yet, I have to ask.
> >
> >Would a usb mixer work better than a sound card? I've seen a couple
> >for under $100.
>
> --
> Cecil
> k5nwa
> http://www.softrockradio.org/
> http://thepartsplace.k5nwa.com/
> http://parts.softrockradio.org/
>
> Never take life seriously. Nobody gets out alive anyway.
>

In the specs...

Low-noise digital 16-bit, 44.1 kHz

I wouldn't use it.

--- In softrock40@yahoogroups.com, "p38ah" <p38ah@...> wrote:
>
> This is the device that got me wondering.
> http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
>
> I don't understand enough about sdr to add anything. I'm just wondering if a
device like this could be used "instead" of a sound card. Would it work better??
>
> --- In softrock40@yahoogroups.com, cbayona <CBayona@> wrote:
> >
> > You would need to be more specific as to what device you mean.
> >
> > The USB mixers I seen are analog mixers with USB control, that is
> > they combine several analog signals to create an output analog signal
> > that is a mixture of the inputs, this would not work at all since a
> > computer needs digital representation of the signals so it can do
> > math on the signals.
> >
> > A sound card is used because it takes multiple analog signal and
> > converts them to digital form which your computer can read and can be
> > further processed to do frequency shift, image rejection, filtering,
> > and demodulation.
> >
> > At 10:04 AM 2/2/2012, you wrote:
> > >Not understanding how it all works just yet, I have to ask.
> > >
> > >Would a usb mixer work better than a sound card? I've seen a couple
> > >for under $100.
> >
> > --
> > Cecil
> > k5nwa
> > http://www.softrockradio.org/
> > http://thepartsplace.k5nwa.com/
> > http://parts.softrockradio.org/
> >
> > Never take life seriously. Nobody gets out alive anyway.
> >
>

They have some with 96khz but I wonder if they are better than a sound card. It
just seems to me they are more purpose built for what sdr is trying to do.

this one claims 96khz
http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html

--- In softrock40@yahoogroups.com, "VA3UE" <va3ue@...> wrote:
>
> In the specs...
>
> Low-noise digital 16-bit, 44.1 kHz
>
> I wouldn't use it.
>
> --- In softrock40@yahoogroups.com, "p38ah" <p38ah@> wrote:
> >
> > This is the device that got me wondering.
> > http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> >
> > I don't understand enough about sdr to add anything. I'm just wondering if a
device like this could be used "instead" of a sound card. Would it work better??
> >
> > --- In softrock40@yahoogroups.com, cbayona <CBayona@> wrote:
> > >
> > > You would need to be more specific as to what device you mean.
> > >
> > > The USB mixers I seen are analog mixers with USB control, that is
> > > they combine several analog signals to create an output analog signal
> > > that is a mixture of the inputs, this would not work at all since a
> > > computer needs digital representation of the signals so it can do
> > > math on the signals.
> > >
> > > A sound card is used because it takes multiple analog signal and
> > > converts them to digital form which your computer can read and can be
> > > further processed to do frequency shift, image rejection, filtering,
> > > and demodulation.
> > >
> > > At 10:04 AM 2/2/2012, you wrote:
> > > >Not understanding how it all works just yet, I have to ask.
> > > >
> > > >Would a usb mixer work better than a sound card? I've seen a couple
> > > >for under $100.
> > >
> > > --
> > > Cecil
> > > k5nwa
> > > http://www.softrockradio.org/
> > > http://thepartsplace.k5nwa.com/
> > > http://parts.softrockradio.org/
> > >
> > > Never take life seriously. Nobody gets out alive anyway.
> > >
> >
>

forget that last one. it is just another usb sound card, not a mixer

--- In softrock40@yahoogroups.com, "p38ah" <p38ah@...> wrote:
>
> They have some with 96khz but I wonder if they are better than a sound card.
It just seems to me they are more purpose built for what sdr is trying to do.
>
> this one claims 96khz
> http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html
>
> --- In softrock40@yahoogroups.com, "VA3UE" <va3ue@> wrote:
> >
> > In the specs...
> >
> > Low-noise digital 16-bit, 44.1 kHz
> >
> > I wouldn't use it.
> >
> > --- In softrock40@yahoogroups.com, "p38ah" <p38ah@> wrote:
> > >
> > > This is the device that got me wondering.
> > > http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> > >
> > > I don't understand enough about sdr to add anything. I'm just wondering if
a device like this could be used "instead" of a sound card. Would it work
better??
> > >
> > > --- In softrock40@yahoogroups.com, cbayona <CBayona@> wrote:
> > > >
> > > > You would need to be more specific as to what device you mean.
> > > >
> > > > The USB mixers I seen are analog mixers with USB control, that is
> > > > they combine several analog signals to create an output analog signal
> > > > that is a mixture of the inputs, this would not work at all since a
> > > > computer needs digital representation of the signals so it can do
> > > > math on the signals.
> > > >
> > > > A sound card is used because it takes multiple analog signal and
> > > > converts them to digital form which your computer can read and can be
> > > > further processed to do frequency shift, image rejection, filtering,
> > > > and demodulation.
> > > >
> > > > At 10:04 AM 2/2/2012, you wrote:
> > > > >Not understanding how it all works just yet, I have to ask.
> > > > >
> > > > >Would a usb mixer work better than a sound card? I've seen a couple
> > > > >for under $100.
> > > >
> > > > --
> > > > Cecil
> > > > k5nwa
> > > > http://www.softrockradio.org/
> > > > http://thepartsplace.k5nwa.com/
> > > > http://parts.softrockradio.org/
> > > >
> > > > Never take life seriously. Nobody gets out alive anyway.
> > > >
> > >
> >
>

For SDR use you don't need all those setting knobs, more things to
get wrong or change by accident, that is the beauty of a sound card,
analog in digital out no muss or fuss and little to get wrong, it's
bad enough having to deal with the drivers.

I would stick to a sound card, you get more performance for the
dollar, no expenses in all the fancy knobs and sliders.


At 11:22 AM 2/2/2012, you wrote:
>They have some with 96khz but I wonder if they are better than a
>sound card. It just seems to me they are more purpose built for what
>sdr is trying to do.
>
>this one claims 96khz
>http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html
>
>--- In softrock40@yahoogroups.com, "VA3UE" <va3ue@...> wrote:
> >
> > In the specs...
> >
> > Low-noise digital 16-bit, 44.1 kHz
> >
> > I wouldn't use it.
> >
> > --- In softrock40@yahoogroups.com, "p38ah" <p38ah@> wrote:
> > >
> > > This is the device that got me wondering.
> > >
> http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> > >
> > > I don't understand enough about sdr to add anything. I'm just
> wondering if a device like this could be used "instead" of a sound
> card. Would it work better??
> > >
> > > --- In softrock40@yahoogroups.com, cbayona <CBayona@> wrote:
> > > >
> > > > You would need to be more specific as to what device you mean.
> > > >
> > > > The USB mixers I seen are analog mixers with USB control, that is
> > > > they combine several analog signals to create an output analog signal
> > > > that is a mixture of the inputs, this would not work at all since a
> > > > computer needs digital representation of the signals so it can do
> > > > math on the signals.
> > > >
> > > > A sound card is used because it takes multiple analog signal and
> > > > converts them to digital form which your computer can read and can be
> > > > further processed to do frequency shift, image rejection, filtering,
> > > > and demodulation.
> > > >
> > > > At 10:04 AM 2/2/2012, you wrote:
> > > > >Not understanding how it all works just yet, I have to ask.
> > > > >
> > > > >Would a usb mixer work better than a sound card? I've seen a couple
> > > > >for under $100.
> > > >
> > > > --
> > > > Cecil
> > > > k5nwa
> > > > http://www.softrockradio.org/
> > > > http://thepartsplace.k5nwa.com/
> > > > http://parts.softrockradio.org/
> > > >
> > > > Never take life seriously. Nobody gets out alive anyway.
> > > >
> > >
> >

--
Cecil
k5nwa
http://www.softrockradio.org/
http://thepartsplace.k5nwa.com/
http://parts.softrockradio.org/

Never take life seriously. Nobody gets out alive anyway.

 

They have some with 96khz but I wonder if they are better than a sound card. It just seems to me they are more purpose built for what sdr is trying to do.

this one claims 96khz
http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html

--- In softrock40@yahoogroups.com, "VA3UE" <va3ue@...> wrote:
>
> In the specs...
>
> Low-noise digital 16-bit, 44.1 kHz
>
> I wouldn't use it.
>
> --- In softrock40@yahoogroups.com, "p38ah" <p38ah@> wrote:
> >
> > This is the device that got me wondering.
> > http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> >
> > I don't understand enough about sdr to add anything. I'm just wondering if a device like this could be used "instead" of a sound card. Would it work better??
> >
> > --- In softrock40@yahoogroups.com, cbayona <CBayona@> wrote:
> > >
> > > You would need to be more specific as to what device you mean.
> > >
> > > The USB mixers I seen are analog mixers with USB control, that is
> > > they combine several analog signals to create an output analog signal
> > > that is a mixture of the inputs, this would not work at all since a
> > > computer needs digital representation of the signals so it can do
> > > math on the signals.
> > >
> > > A sound card is used because it takes multiple analog signal and
> > > converts them to digital form which your computer can read and can be
> > > further processed to do frequency shift, image rejection, filtering,
> > > and demodulation.
> > >
> > > At 10:04 AM 2/2/2012, you wrote:
> > > >Not understanding how it all works just yet, I have to ask.
> > > >
> > > >Would a usb mixer work better than a sound card? I've seen a couple
> > > >for under $100.
> > >
> > > --
> > > Cecil
> > > k5nwa
> > > http://www.softrockradio.org/
> > > http://thepartsplace.k5nwa.com/
> > > http://parts.softrockradio.org/
> > >
> > > Never take life seriously. Nobody gets out alive anyway.
> > >
> >
>

__________ Information from ESET Smart Security, version of virus signature database 6850 (20120202) __________

The message was checked by ESET Smart Security.

http://www.eset.com

Hi .

Forget all about mixers what you want is a good quality sound card.
And does it have to be usb what computer are you running is it a desktop
or laptop.

Once we know that you will get plenty of recommendations.
In my desktops I run M-Audio Delta 44 and M-Audio Delta 1010LT.

Regards Peter F1VKK



On 02/02/2012 18:23, p38ah wrote:
> forget that last one. it is just another usb sound card, not a mixer
>
> --- In softrock40@yahoogroups.com, "p38ah"<p38ah@...>  wrote:
>> They have some with 96khz but I wonder if they are better than a sound card.
It just seems to me they are more purpose built for what sdr is trying to do.
>>
>> this one claims 96khz
>> http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html
>>
>> --- In softrock40@yahoogroups.com, "VA3UE"<va3ue@>  wrote:
>>> In the specs...
>>>
>>> Low-noise digital 16-bit, 44.1 kHz
>>>
>>> I wouldn't use it.
>>>
>>> --- In softrock40@yahoogroups.com, "p38ah"<p38ah@>  wrote:
>>>> This is the device that got me wondering.
>>>> http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
>>>>
>>>> I don't understand enough about sdr to add anything. I'm just wondering if
a device like this could be used "instead" of a sound card. Would it work
better??
>>>>
>>>> --- In softrock40@yahoogroups.com, cbayona<CBayona@>  wrote:
>>>>> You would need to be more specific as to what device you mean.
>>>>>
>>>>> The USB mixers I seen are analog mixers with USB control, that is
>>>>> they combine several analog signals to create an output analog signal
>>>>> that is a mixture of the inputs, this would not work at all since a
>>>>> computer needs digital representation of the signals so it can do
>>>>> math on the signals.
>>>>>
>>>>> A sound card is used because it takes multiple analog signal and
>>>>> converts them to digital form which your computer can read and can be
>>>>> further processed to do frequency shift, image rejection, filtering,
>>>>> and demodulation.
>>>>>
>>>>> At 10:04 AM 2/2/2012, you wrote:
>>>>>> Not understanding how it all works just yet, I have to ask.
>>>>>>
>>>>>> Would a usb mixer work better than a sound card? I've seen a couple
>>>>>> for under $100.
>>>>> --
>>>>> Cecil
>>>>> k5nwa
>>>>> http://www.softrockradio.org/
>>>>> http://thepartsplace.k5nwa.com/
>>>>> http://parts.softrockradio.org/
>>>>>
>>>>> Never take life seriously. Nobody gets out alive anyway.
>>>>>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>

Dave:

I have a preferred transistor type. But giving a rhetorical question, what ones
would you suggest..?

Bear in mind many people use the obsolete and unsuitable IRF510. There is a
certain amp kit using those, which rates 5/5 on eham.com.

Transformer ratio is 1:4 step-up on the output.

-----
Hello Taka,

Very good to see you are still active!  I do not go on this group very often,
but recently I am doing some more Softrock work.

I did make a QSO to Japan once with the amplifier, but sadly it was not you!

How many RD16HHF1 are you using in parallel? I have MoBo V4.3, so can put clean
1W into the input.

Regards,
Rob


--- In softrock40@yahoogroups.com, "Taka Sugi" <taka_sugi1206@...> wrote:
> Hello, Rob!
>
> Long time no see, but how are you doing?
>
> Before, I got your M0RZF 20w amp PCB, and it has been
> working very well!. I have been enjoying digital mode
> by using Ensemble RXTX + your 20w amp.
> After built your 20w amp, I built 50w amp by RD16HHF1
> parallel Push-pull.

 

The item noted below... works very well but is a bit pricey and has only 48 KHz sampling capability.  Can be used for both RX and TX as an external interface along with the MB sound system.  Also needs AC connection...

<http://www.henryeng.com/USBmatII.html>

Bruce,K2BET




On 2/2/2012 12:22 PM, p38ah wrote:

 

They have some with 96khz but I wonder if they are better than a sound card. It just seems to me they are more purpose built for what sdr is trying to do.

this one claims 96khz
http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html

--- In softrock40@yahoogroups.com, "VA3UE" <va3ue@...> wrote:
>
> In the specs...
>
> Low-noise digital 16-bit, 44.1 kHz
>
> I wouldn't use it.
>
> --- In softrock40@yahoogroups.com, "p38ah" <p38ah@> wrote:
> >
> > This is the device that got me wondering.
> > http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> >
> > I don't understand enough about sdr to add anything. I'm just wondering if a device like this could be used "instead" of a sound card. Would it work better??
> >
> > --- In softrock40@yahoogroups.com, cbayona <CBayona@> wrote:
> > >
> > > You would need to be more specific as to what device you mean.
> > >
> > > The USB mixers I seen are analog mixers with USB control, that is
> > > they combine several analog signals to create an output analog signal
> > > that is a mixture of the inputs, this would not work at all since a
> > > computer needs digital representation of the signals so it can do
> > > math on the signals.
> > >
> > > A sound card is used because it takes multiple analog signal and
> > > converts them to digital form which your computer can read and can be
> > > further processed to do frequency shift, image rejection, filtering,
> > > and demodulation.
> > >
> > > At 10:04 AM 2/2/2012, you wrote:
> > > >Not understanding how it all works just yet, I have to ask.
> > > >
> > > >Would a usb mixer work better than a sound card? I've seen a couple
> > > >for under $100.
> > >
> > > --
> > > Cecil
> > > k5nwa
> > > http://www.softrockradio.org/
> > > http://thepartsplace.k5nwa.com/
> > > http://parts.softrockradio.org/
> > >
> > > Never take life seriously. Nobody gets out alive anyway.
> > >
> >
>

__________ Information from ESET Smart Security, version of virus signature database 6850 (20120202) __________

The message was checked by ESET Smart Security.

http://www.eset.com

__________ Information from ESET Smart Security, version of virus signature database 6850 (20120202) __________

The message was checked by ESET Smart Security.

http://www.eset.com

Thanks, I already have an external usb sound cart on the way. I just got curious
about the mixers is all. It seems like you could use 3 softrock kits with 3
different frequency ranges all going into one box with a mixer.

--- In softrock40@yahoogroups.com, Peter Johnson <m1bcv@...> wrote:
>
> Hi .
>
> Forget all about mixers what you want is a good quality sound card.
> And does it have to be usb what computer are you running is it a desktop
> or laptop.
>
> Once we know that you will get plenty of recommendations.
> In my desktops I run M-Audio Delta 44 and M-Audio Delta 1010LT.
>
> Regards Peter F1VKK
>
>
>
> On 02/02/2012 18:23, p38ah wrote:
> > forget that last one. it is just another usb sound card, not a mixer
> >
> > --- In softrock40@yahoogroups.com, "p38ah"<p38ah@>  wrote:
> >> They have some with 96khz but I wonder if they are better than a sound
card. It just seems to me they are more purpose built for what sdr is trying to
do.
> >>
> >> this one claims 96khz
> >> http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html
> >>
> >> --- In softrock40@yahoogroups.com, "VA3UE"<va3ue@>  wrote:
> >>> In the specs...
> >>>
> >>> Low-noise digital 16-bit, 44.1 kHz
> >>>
> >>> I wouldn't use it.
> >>>
> >>> --- In softrock40@yahoogroups.com, "p38ah"<p38ah@>  wrote:
> >>>> This is the device that got me wondering.
> >>>>
http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> >>>>
> >>>> I don't understand enough about sdr to add anything. I'm just wondering
if a device like this could be used "instead" of a sound card. Would it work
better??
> >>>>
> >>>> --- In softrock40@yahoogroups.com, cbayona<CBayona@>  wrote:
> >>>>> You would need to be more specific as to what device you mean.
> >>>>>
> >>>>> The USB mixers I seen are analog mixers with USB control, that is
> >>>>> they combine several analog signals to create an output analog signal
> >>>>> that is a mixture of the inputs, this would not work at all since a
> >>>>> computer needs digital representation of the signals so it can do
> >>>>> math on the signals.
> >>>>>
> >>>>> A sound card is used because it takes multiple analog signal and
> >>>>> converts them to digital form which your computer can read and can be
> >>>>> further processed to do frequency shift, image rejection, filtering,
> >>>>> and demodulation.
> >>>>>
> >>>>> At 10:04 AM 2/2/2012, you wrote:
> >>>>>> Not understanding how it all works just yet, I have to ask.
> >>>>>>
> >>>>>> Would a usb mixer work better than a sound card? I've seen a couple
> >>>>>> for under $100.
> >>>>> --
> >>>>> Cecil
> >>>>> k5nwa
> >>>>> http://www.softrockradio.org/
> >>>>> http://thepartsplace.k5nwa.com/
> >>>>> http://parts.softrockradio.org/
> >>>>>
> >>>>> Never take life seriously. Nobody gets out alive anyway.
> >>>>>
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>

 

Hi .

Forget all about mixers what you want is a good quality sound card.
And does it have to be usb what computer are you running is it a desktop
or laptop.

Once we know that you will get plenty of recommendations.
In my desktops I run M-Audio Delta 44 and M-Audio Delta 1010LT.

Regards Peter F1VKK

On 02/02/2012 18:23, p38ah wrote:
> forget that last one. it is just another usb sound card, not a mixer
>
> --- In softrock40@yahoogroups.com, "p38ah"<p38ah@...> wrote:
>> They have some with 96khz but I wonder if they are better than a sound card. It just seems to me they are more purpose built for what sdr is trying to do.
>>
>> this one claims 96khz
>> http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html
>>
>> --- In softrock40@yahoogroups.com, "VA3UE"<va3ue@> wrote:
>>> In the specs...
>>>
>>> Low-noise digital 16-bit, 44.1 kHz
>>>
>>> I wouldn't use it.
>>>
>>> --- In softrock40@yahoogroups.com, "p38ah"<p38ah@> wrote:
>>>> This is the device that got me wondering.
>>>> http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
>>>>
>>>> I don't understand enough about sdr to add anything. I'm just wondering if a device like this could be used "instead" of a sound card. Would it work better??
>>>>
>>>> --- In softrock40@yahoogroups.com, cbayona<CBayona@> wrote:
>>>>> You would need to be more specific as to what device you mean.
>>>>>
>>>>> The USB mixers I seen are analog mixers with USB control, that is
>>>>> they combine several analog signals to create an output analog signal
>>>>> that is a mixture of the inputs, this would not work at all since a
>>>>> computer needs digital representation of the signals so it can do
>>>>> math on the signals.
>>>>>
>>>>> A sound card is used because it takes multiple analog signal and
>>>>> converts them to digital form which your computer can read and can be
>>>>> further processed to do frequency shift, image rejection, filtering,
>>>>> and demodulation.
>>>>>
>>>>> At 10:04 AM 2/2/2012, you wrote:
>>>>>> Not understanding how it all works just yet, I have to ask.
>>>>>>
>>>>>> Would a usb mixer work better than a sound card? I've seen a couple
>>>>>> for under $100.
>>>>> --
>>>>> Cecil
>>>>> k5nwa
>>>>> http://www.softrockradio.org/
>>>>> http://thepartsplace.k5nwa.com/
>>>>> http://parts.softrockradio.org/
>>>>>
>>>>> Never take life seriously. Nobody gets out alive anyway.
>>>>>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>

__________ Information from ESET Smart Security, version of virus signature database 6851 (20120202) __________

The message was checked by ESET Smart Security.

http://www.eset.com

For that a decent mixer will work, no cable switching but only one
device at a time. Remember though you want the mixer to have way more
bandwidth than the typical stereo 20KHz response.

At 11:52 AM 2/2/2012, you wrote:
>Thanks, I already have an external usb sound cart on the way. I just
>got curious about the mixers is all. It seems like you could use 3
>softrock kits with 3 different frequency ranges all going into one
>box with a mixer.
>
>--- In softrock40@yahoogroups.com, Peter Johnson <m1bcv@...> wrote:
> >
> > Hi .
> >
> > Forget all about mixers what you want is a good quality sound card.
> > And does it have to be usb what computer are you running is it a desktop
> > or laptop.
> >
> > Once we know that you will get plenty of recommendations.
> > In my desktops I run M-Audio Delta 44 and M-Audio Delta 1010LT.
> >
> > Regards Peter F1VKK
> >
> >
> >
> > On 02/02/2012 18:23, p38ah wrote:
> > > forget that last one. it is just another usb sound card, not a mixer
> > >
> > > --- In softrock40@yahoogroups.com, "p38ah"<p38ah@>  wrote:
> > >> They have some with 96khz but I wonder if they are better than
> a sound card. It just seems to me they are more purpose built for
> what sdr is trying to do.
> > >>
> > >> this one claims 96khz
> > >> http://www.musictrends.com/traktor-audio-audio-interface-p-14330.html
> > >>
> > >> --- In softrock40@yahoogroups.com, "VA3UE"<va3ue@>  wrote:
> > >>> In the specs...
> > >>>
> > >>> Low-noise digital 16-bit, 44.1 kHz
> > >>>
> > >>> I wouldn't use it.
> > >>>
> > >>> --- In softrock40@yahoogroups.com, "p38ah"<p38ah@>  wrote:
> > >>>> This is the device that got me wondering.
> > >>>>
> http://www.amazon.com/Alesis-MultiMix-USB-Four-Channel-Mixer/dp/B001T9O5VG
> > >>>>
> > >>>> I don't understand enough about sdr to add anything. I'm
> just wondering if a device like this could be used "instead" of a
> sound card. Would it work better??
> > >>>>
> > >>>> --- In softrock40@yahoogroups.com, cbayona<CBayona@>  wrote:
> > >>>>> You would need to be more specific as to what device you mean.
> > >>>>>
> > >>>>> The USB mixers I seen are analog mixers with USB control, that is
> > >>>>> they combine several analog signals to create an output analog signal
> > >>>>> that is a mixture of the inputs, this would not work at all since a
> > >>>>> computer needs digital representation of the signals so it can do
> > >>>>> math on the signals.
> > >>>>>
> > >>>>> A sound card is used because it takes multiple analog signal and
> > >>>>> converts them to digital form which your computer can read and can be
> > >>>>> further processed to do frequency shift, image rejection, filtering,
> > >>>>> and demodulation.
> > >>>>>
> > >>>>> At 10:04 AM 2/2/2012, you wrote:
> > >>>>>> Not understanding how it all works just yet, I have to ask.
> > >>>>>>
> > >>>>>> Would a usb mixer work better than a sound card? I've seen a couple
> > >>>>>> for under $100.
> > >>>>> --
> > >>>>> Cecil
> > >>>>> k5nwa
> > >>>>> http://www.softrockradio.org/
> > >>>>> http://thepartsplace.k5nwa.com/
> > >>>>> http://parts.softrockradio.org/
> > >>>>>
> > >>>>> Never take life seriously. Nobody gets out alive anyway.
> > >>>>>

--
Cecil
k5nwa
http://www.softrockradio.org/
http://thepartsplace.k5nwa.com/
http://parts.softrockradio.org/

Never take life seriously. Nobody gets out alive anyway.

I am at the point where I need to start winding my toroids but I don't have an
inductance meter.  How do people handle this?  Do I just take it for granted
that the number of turns will give the proper inductance?

Thanks de N6RI

Believe in the force Luke.

--- In softrock40@yahoogroups.com, "lopezd2@..." <brewgod23@...> wrote:
>
> I am at the point where I need to start winding my toroids but I don't have an
inductance meter.  How do people handle this?  Do I just take it for granted
that the number of turns will give the proper inductance?
>
> Thanks de N6RI
>

 

I am at the point where I need to start winding my toroids but I don't have an inductance meter. How do people handle this? Do I just take it for granted that the number of turns will give the proper inductance?

Thanks de N6RI

-- John Williams
KE5SSH - ham since 2007
WQKA523 - GMRS for family use on the farm