----- Original Message -----
From: "m0els"
Subject: [kgksdr] Mac Donalds M


> Hi all, I decided to do some tests after my last posting and found that
> even with the ft897d switched off, I was still getting the "M" effect. So
> am I right in thinking that this is a soundcard problem and not the audio
> from the 897d ?
> Any ideas on whats happening
>

This has little to do with KGKSDR. Or even SDR. Also very likely nothing to
do with a fault in the soundcard.
I suggest you learn about connecting your rig to soundcards.
http://homepages.wightcable.net/~g4zfq/Si570.htm Section 5 gives some links,
note in/out feedback and ground loops.
The rest of the site gives links to many aspects of SDR.
I suggest you try data mode software to get used to things.
SDR programs will not help until you have an I/Q front end, but don't let
that stop you looking. There's just no point in using them.

73 Alan G4ZFQ

Hi all, I decided to do some tests after my last posting and found that even
with the ft897d switched off, I was still getting the "M" effect. So am I right
in thinking that this is a soundcard problem and not the audio from the 897d ?
Any ideas on whats happening

I will post the screengrab under the files section shortly

73
John

Hi Alan, Thanks for that. I have looked at the softrock group and will see what
replies I get.

73
John

--- In kgksdr@yahoogroups.com, "Alan" <g4zfq@...> wrote:
>
>
> ----- Original Message -----
> From: "m0els"
> Subject: [kgksdr] Re: Newbie to sdr software
>
>
> > Hi, Thanks for the reply. I have asked on the 897d yahoo group and will
> > see what replies I get. Since my main interests are in microwaves, the
> > 144mhz band is my main if that I use. I have heard that softrock now goes
> > up to 144mhz with a converter, but would prefer to use the rig.
> >
>
> The usual way is to fit a Softrock into the IF. Look on the Softrock group
> to see if anyone has done it with your rig.
>
> 73 Alan G4ZFQ
>

----- Original Message -----
From: "m0els"
Subject: [kgksdr] Re: Newbie to sdr software


> Hi, Thanks for the reply. I have asked on the 897d yahoo group and will
> see what replies I get. Since my main interests are in microwaves, the
> 144mhz band is my main if that I use. I have heard that softrock now goes
> up to 144mhz with a converter, but would prefer to use the rig.
>

The usual way is to fit a Softrock into the IF. Look on the Softrock group
to see if anyone has done it with your rig.

73 Alan G4ZFQ

Hi, Thanks for the reply. I have asked on the 897d yahoo group and will see what
replies I get. Since my main interests are in microwaves, the 144mhz band is my
main if that I use. I have heard that softrock now goes up to 144mhz with a
converter, but would prefer to use the rig.

Will report back when a solution is found

Thanks

John

--- In kgksdr@yahoogroups.com, "Duncan" <m0kgk@...> wrote:
>
>
>
> --- In kgksdr@yahoogroups.com, "m0els" <m0els@> wrote:
> >
> > Hi Duncan, Is there any way the software can be made to compensate for this?
> > What about taking the audio from elsewhere on the 897. I may have to delve
into the circuit diagram.
> > Any ideas.
> >
>
> Hi John,
>
> I don't know where you would get wider audio from the 897, but suspect it
would involve some butchering and may still be restricted by roofing filters
etc.
>
> Again, I'm not sure, so my advice would be to check on a group specialising in
this TX where someone might know.
>
> 73,
>
> Duncan
> M0KGK
>

--- In kgksdr@yahoogroups.com, "m0els" <m0els@...> wrote:
>
> Hi Duncan, Is there any way the software can be made to compensate for this?
> What about taking the audio from elsewhere on the 897. I may have to delve
into the circuit diagram.
> Any ideas.
>

Hi John,

I don't know where you would get wider audio from the 897, but suspect it would
involve some butchering and may still be restricted by roofing filters etc.

Again, I'm not sure, so my advice would be to check on a group specialising in
this TX where someone might know.

73,

Duncan
M0KGK

Hi Duncan, Is there any way the software can be made to compensate for this?
What about taking the audio from elsewhere on the 897. I may have to delve into
the circuit diagram.
Any ideas.

Thanks

John


--- In kgksdr@yahoogroups.com, "Duncan" <m0kgk@...> wrote:
>
>
>
> --- In kgksdr@yahoogroups.com, "m0els" <m0els@> wrote:
> >
> > Hi Duncan, will dump a screengrab shortly
>
> Hi John,
>
> Just had a look at the screen grab. The M in the middle is your audio signal,
I suspect that all the stuff outside of the M is just noise.  The audio
bandwidth from the '897 will only be about 2.5-3.0 kHz, which corresponds to the
M being about 5-6 kHz wide.
>
> If you were using a softrock et al, it would have a really wideband output and
it's then possible to get a signal 96 or 192 kHz wide on the screen, but with
just bandwidth limited audio the display will be fairly narrow.
>
> 73,
>
> Duncan
> M0KGK
>

--- In kgksdr@yahoogroups.com, "m0els" <m0els@...> wrote:
>
> Hi Duncan, will dump a screengrab shortly

Hi John,

Just had a look at the screen grab. The M in the middle is your audio signal, I
suspect that all the stuff outside of the M is just noise.  The audio bandwidth
from the '897 will only be about 2.5-3.0 kHz, which corresponds to the M being
about 5-6 kHz wide.

If you were using a softrock et al, it would have a really wideband output and
it's then possible to get a signal 96 or 192 kHz wide on the screen, but with
just bandwidth limited audio the display will be fairly narrow.

73,

Duncan
M0KGK

Duncan, I forgot to add that the freq I am looking at, is on the peak of the "M"
If I tune into a beacon, then I can see the signal right on top of the "M"
Very strange

John

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the kgksdr
group.

   File        : /grab1.pdf
   Uploaded by : m0els <m0els@...>
   Description : M0ELS screengrab

You can access this file at the URL:
http://groups.yahoo.com/group/kgksdr/files/grab1.pdf

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/forms/general.htmlfiles

Regards,

m0els <m0els@...>

Hi Duncan, will dump a screengrab shortly

Thanks

John

--- In kgksdr@yahoogroups.com, "Duncan" <m0kgk@...> wrote:
>
> --- In kgksdr@yahoogroups.com, "m0els" <m0els@> wrote:
> >
> > Hi all, Just dnloaded the latest version and have it running with a realtek
hd soundcard. The problem I have on rx is that the waveform appears to me two
halves, with a "mc donalds M " in the middle. I presume this is the two audio
channels L + R.
> >
> > How does one get rid of this via software or is there another way.
> > I am using the line in port on the sndcard which receives the audio from a
usb/serial port converter from my yaesu ft897d via the cat port.
> >
>
> Hi John,
>
> It sounds like your input is in mono rather than the I/Q input for which the
software is designed, so you might see some odd shapes.  Can you post up a
screen dump in the files area?
>
> 73,
>
> Duncan
> M0KGK
>

My wish list would be to see a CAT port implementation into the sdr software,
sothat the frequency readout corresponds to the particular transceiver used and
tracks both directions as with HRD. An additional feature could be added where
if one uses a transverter with a hr fig, that the readout shows the transverter
freq and not only the IF

I use a demi 23cm transverter  which has a 144 mhz if. I would like to see
1296.200 on the software and not 144.200

The software is looking great and I am fiddling away, trying this and that,
excepting for this annoying M in the middle of the waveform

73
John - M0ELS

--- In kgksdr@yahoogroups.com, "m0els" <m0els@...> wrote:
>
> Hi all, Just dnloaded the latest version and have it running with a realtek hd
soundcard. The problem I have on rx is that the waveform appears to me two
halves, with a "mc donalds M " in the middle. I presume this is the two audio
channels L + R.
>
> How does one get rid of this via software or is there another way.
> I am using the line in port on the sndcard which receives the audio from a
usb/serial port converter from my yaesu ft897d via the cat port.
>

Hi John,

It sounds like your input is in mono rather than the I/Q input for which the
software is designed, so you might see some odd shapes.  Can you post up a
screen dump in the files area?

73,

Duncan
M0KGK

Hi all, Just dnloaded the latest version and have it running with a realtek hd
soundcard. The problem I have on rx is that the waveform appears to me two
halves, with a "mc donalds M " in the middle. I presume this is the two audio
channels L + R.

How does one get rid of this via software or is there another way.
I am using the line in port on the sndcard which receives the audio from a
usb/serial port converter from my yaesu ft897d via the cat port.

Many Thanks

John - M0ELS

--- In kgksdr@yahoogroups.com, "dan" <w5xz@...> wrote:
>
> K9DUR has a voice keyer for powerSDR and VAC.
>
> google his callsign, ck out his website. it MIGHT work..
>
> 73, w5xz
>

  Yeah, tnx. I'm actually already familiar with K9DUR's software.
I meaningfully asked about the idea to integrate the voice keyer to KGKSDR and
wanted to see the reactions. Not many didn't give hurrays :)

  The way I see it, is that you would have less applications running on the
background with the integration and it would make contesting or just normal
CQing a lot easier. There's a limit about what do add, but I see this might be
quite usefull. Obviously, this is just my opinion.

73 de Janne OH1SDR

K9DUR has a voice keyer for powerSDR and VAC.

google his callsign, ck out his website. it MIGHT work..

73, w5xz

Norberto Modanesi wrote:
> As said before, they are on the files area/ screenshot folder

OK sorry, just read your posting again.  I've had a look at the screen
dumps you posted, there are not enough calibration points being picked
up to make a valid map.

I can tell you the rules for accepting points into the calibration map.

1. The calibration signal must be 30dB above the noise floor, otherwise
it will be rejected.

2. The calibration signal must be 20dB above the image, otherwise it
will be rejected.

It would appear that your incoming signals are not meeting one or both
of these rules.

Have you got reception signals coming in?  Are they showing on the
display a healthy amount above the noise signal?  Are the IQ signals
giving a seperation of at least 20dB to start with?  I guess this last
one could be checked with a signal generator.

73,

Duncan
M0KGK

As said before, they are on the files area/ screenshot folder
Norbert

Duncan Munro escribió:
> neiperalta wrote:
>> Hi everibody:
>> I can't adjust image rejection using KGKSDR while using PSDR I achive 30dB
rejection.-
>> I like KGKSDR because has less backgound noise.-
>> SAound card is Sound Blaster Audigy 7.1 SE.
>> Here are two screenshots of the calibration tab (ampl & phase).-
>> Could you tell me what's wrong? Hardware is ADTRX1 by YU1LM.-
>> I'll put the screenshots on the FILES of this group.
>
> The other thing is Yahoo has probably removed your attached screen
> shots.  Please post to the files area and we can take a look.
>
> 73,
>
> Duncan
> M0KGK
>
>

neiperalta wrote:
> Hi everibody:
> I can't adjust image rejection using KGKSDR while using PSDR I achive 30dB
rejection.-
> I like KGKSDR because has less backgound noise.-
> SAound card is Sound Blaster Audigy 7.1 SE.
> Here are two screenshots of the calibration tab (ampl & phase).-
> Could you tell me what's wrong? Hardware is ADTRX1 by YU1LM.-
> I'll put the screenshots on the FILES of this group.

The other thing is Yahoo has probably removed your attached screen
shots.  Please post to the files area and we can take a look.

73,

Duncan
M0KGK

neiperalta wrote:
> Hi everibody:
> I can't adjust image rejection using KGKSDR while using PSDR I achive 30dB
rejection.-
> I like KGKSDR because has less backgound noise.-
> SAound card is Sound Blaster Audigy 7.1 SE.
> Here are two screenshots of the calibration tab (ampl & phase).-
> Could you tell me what's wrong? Hardware is ADTRX1 by YU1LM.-
> I'll put the screenshots on the FILES of this group.
> Regards.

Hi Norbert, did you try putting the delay on as Bob suggested the other day?

73,

Duncan
M0KGK

Hi everibody:
I can't adjust image rejection using KGKSDR while using PSDR I achive 30dB
rejection.-
I like KGKSDR because has less backgound noise.-
SAound card is Sound Blaster Audigy 7.1 SE.
Here are two screenshots of the calibration tab (ampl & phase).-
Could you tell me what's wrong? Hardware is ADTRX1 by YU1LM.-
I'll put the screenshots on the FILES of this group.
Regards.

Norbert

Who of you guys have a sore throat from repeating the "CQ contest" on CQWW -
raise your hands, hi.

  Wouldn't it be great to have, say, 10 memories (10 buttons) in KGKSDR for CQs &
stuff like that. I haven't seen one in any SDR software. IMHO, you could even
record the files with some stand alone recorder software, so one wouldn't have
to be added to the SDR software.

Wouldn't be too bad to carry out? Is there any sense in this idea?


73 de Janne OH1SDR

PS. Just worked Japan on CQWW with KGKSDR - love it.

Thanks for your answer.-
Norbert

g8voip escribió:
> Hi Norbert,
>
> That sounds like a good card to start off with, certainly the 24 bit sampling
is a 'must' really for best performance, likewise the 96kHz capability. The S/N
is also quite respectable.
>
> I have used two different SoundBlaster cards, Live 24, and Audigy 2 ZS, both
internal PCI versions. Both gave good results, far superior to the motherboard
16 bit / 48kHz soundcard.
>
> The only one thing to be aware of is that on some SoundBlaster cards, the
hardware has a one sample delay between the two input channels. For SDR work and
to obtain good image rejection it is essential that the I and Q inputs are
sampled at the same time.
>
> In most SDR programs, Winrad, Rocky and PSDR (except the 'official' FlexRadio
versions) there is the facility to insert a one sample delay in the program set
up to correct for this hardware anomaly.
>
> The Live 24 needs this delay, but the Audigy 2ZS did not. I guess it is really
one of those things you have to determine by experimenting with your own card,
pretty obvious, if you cannot obtain any image rejection at all, then try
delaying the right channel by one sample.
>
> 73, Bob G8VOI
>
> --- In kgksdr@yahoogroups.com, "neiperalta" <norberto.modanesi@...> wrote:
>> Hi
>> My name is Norbert and this is my 1st question.
>> Is the Sound blaster Audigy 7.1 SE good for SDR?
>> Specifications are: 24 bit/96KHz , S/N 100 dB.
>> Regards
>>
>> Norbert (ex LU4FCI)
>>
>
>
>

Hi Norbert,

That sounds like a good card to start off with, certainly the 24 bit sampling is
a 'must' really for best performance, likewise the 96kHz capability. The S/N is
also quite respectable.

I have used two different SoundBlaster cards, Live 24, and Audigy 2 ZS, both
internal PCI versions. Both gave good results, far superior to the motherboard
16 bit / 48kHz soundcard.

The only one thing to be aware of is that on some SoundBlaster cards, the
hardware has a one sample delay between the two input channels. For SDR work and
to obtain good image rejection it is essential that the I and Q inputs are
sampled at the same time.

In most SDR programs, Winrad, Rocky and PSDR (except the 'official' FlexRadio
versions) there is the facility to insert a one sample delay in the program set
up to correct for this hardware anomaly.

The Live 24 needs this delay, but the Audigy 2ZS did not. I guess it is really
one of those things you have to determine by experimenting with your own card,
pretty obvious, if you cannot obtain any image rejection at all, then try
delaying the right channel by one sample.

73, Bob G8VOI

--- In kgksdr@yahoogroups.com, "neiperalta" <norberto.modanesi@...> wrote:
>
> Hi
> My name is Norbert and this is my 1st question.
> Is the Sound blaster Audigy 7.1 SE good for SDR?
> Specifications are: 24 bit/96KHz , S/N 100 dB.
> Regards
>
> Norbert (ex LU4FCI)
>

Hi
My name is Norbert and this is my 1st question.
Is the Sound blaster Audigy 7.1 SE good for SDR?
Specifications are: 24 bit/96KHz , S/N 100 dB.
Regards

Norbert (ex LU4FCI)

Hi, Duncan

I'm using receiver (YU1LM) with simple synthesizer (LM7001). If it possible for
simplicity, to build in your program DDEClientItem, which will receives data
about frequency of adjustment of the synthesizer (from the other program
–DDEServer) and use this as it needful?

Hi, can that software work with the FlexRadio SDR? Thanks + 73's

Hi Duncan and folks,
i am Denis F6CRP and i am a new user of KGKSDR. Congratulations Ducan, the
program is really exceptional.

I use it with a homebrew HF receiver, a copy a the old progressive receiver from
W7ZOI and K5IRK but with some "novelties" as for example a DDS VFO. The 9 MHz IF
before quartz filter is fed to a I/Q receiver (kit from JA7TDO, very simple).

So, as friends before, pizza, beer and more offered here in IN96KE hi !

73  Denis F6CRP

ps: thanks again !

>
> Hi Janne, I set it up in the same way as the analogue paradigm, like a
potentiometer going through to the AGC line with a diode.  There were 2 reasons,
(1) I understand how it works and (2) it was easy to do :-)
>
> I'll fix the internals so that RF gain will limit gain without affecting the
AGC line and hence S meter.  Can't do it tonight, but will do it tomorrow night.
>
> 73,
>
> Duncan
> M0KGK
>


  Hi Duncan!

  Really looking forward to this. Really glad to know some detail about the
software about how it was done :)

  This is what SDR is all about - the properties of the radio can be enhanced by
software update. Once again, thank you Duncan for your contribution to this fine
hobby and SDR community! It's all about voluntariness, but I'll definitely offer
you a beer and pizza when I visit England :D

73 de Janne, OH1SDR