Re: [Elecraft] SDR IQ/IF Questions
Another new (free) software package under development combining an I/Q SDR panadapter and a contest logging program. Supports linux and windows: http://code.google.com/p/so2sdr/ features of the SDR panadapter with SO2SDR: -supports dual panadapter displays (for two radio contesting) -auto I/Q balancing -peak detection of signals -ability to mark signals on the panadapter (use to mark dupes in CW contests) -can be used to find open (unused) frequencies on a band -special support for Elecraft radios: it automatically inverts the display for the K2 when on the upper bands, for the K3 it reads the correct IF offset for the filter in use I can't guarantee it is completely free of bugs, but I use it for my own operating :) Tor N4OGW -- View this message in context: http://elecraft.365791.n2.nabble.com/SDR-IQ-IF-Questions-tp6246917p6248668.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
Sound card only. Larry N8LP On 4/6/2011 11:14 PM, Joe Subich, W4TV wrote: > > Larry, > > > A recent addition, on which I am a contributing developer, is TRX-Pan. > > It is much simpler and cleaner looking than PowerSDR/IF and integrates > > more tightly with the K3. > > Does TRX-Pan support SDR-IQ or is it limited to soundcard based > devices? > > 73, > >... Joe, W4TV > > > On 4/6/2011 10:09 PM, Larry Phipps wrote: >>Hi Geoffrey. I just read through your thread (I receive the reflector >> in digest mode). I didn't see one of your questions answered, so I will >> tackle it... >> >> I'm not aware of any version of PowerSDR which works with SDR-IQ. The >> interface has to be a sound card. My favorite version of PowerSDR is the >> /IF version by Scott, WU2X. I have tried others like PowerSDR/IQ, but >> they are not as well integrated with the K3 or LP-Bridge. >> >> A recent addition, on which I am a contributing developer, is TRX-Pan. >> It is much simpler and cleaner looking than PowerSDR/IF and integrates >> more tightly with the K3. In fact, more tightly than any other >> panadapter for the K3, I believe. You can read about it here, >> http://www.telepostinc.com/TRXP.html TRX-Pan does not provide >> demodulated audio as PowerSDR does, so it can't be used as a sub-rcvr, >> but it does display and track passbands for both VFOs very nicely. It's >> more like a P3 with huge screen and mouse control. >> >> I wasn't aware that Quisk now supports Windoze. Leigh might have >> mentioned this and I just forgot. I will play with it when I have some >> time. Maybe it could be customized to the level that TRX-Pan is in terms >> of K3 / LP-Bridge integration. >> >> Before deciding on a PC based solution versus a partial PC based >> solution versus a standalone solution, I would download and play with >> the programs that would be required for any of these. They are all >> available as a free download, although WU2X requests a donation to >> support PowerSDR/IF if you decide to go that route. You can set these up >> to control the rig and display noise from your sound card. This will >> help you decide if the PC approach is right for you. >> >> 73, >> Larry N8LP >> >> >> >> On 4/6/2011 5:11 PM, elecraft-requ...@mailman.qth.net wrote: >>> Date: Wed, 6 Apr 2011 13:29:45 -0400 >>> From: "Geoffrey Wolf" >>> Subject: [Elecraft] SDR IQ/IF Questions >>> To: >>> Message-ID:<000f01cbf480$39143d10$ab3cb730$@gmail.com> >>> Content-Type: text/plain;charset="us-ascii" >>> >>> Hello fellow SDR enthusiasts, >>> >>> >>> >>> I have looked around a little bit and haven't found a very >>> definitive answer >>> for the questions that I'm having about the way the K3 and external SDR >>> equipment works. >>> >>> >>> >>> I've been looking into the LP-Pan which converts the IF output from >>> the K3 >>> into (im guessing) audio signals which then are converted into >>> digital data >>> by a soundcard. The trouble I'm having is understanding what exactly >>> I/Q is. From what I understand, I/Q is digital data that software like CW Skimmer >>> understands. >>> >>> >>> >>> Now, I've also been looking at the SDR-IQ which does all of this >>> internally >>> by taking the IF output from the K3 and converts it directly into >>> digital >>> data which is then ferried to the computer over USB, forgoing the >>> need for >>> an extra soundcard. >>> >>> >>> >>> Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF >>> (looks more >>> developed/supported), and PowerSDR-IQ. What is the difference? >>> >>> >>> >>> I suppose the summary question of this email is. can you use >>> PowerSDR/IF >>> with an SDR-IQ rather than an LP-Pan? I personally would rather buy an >>> SDR-IQ and take that extra hardware stage (possible audio loss) out >>> of the >>> picture. >>> >>> >>> >>> Thanks! >>> >>> >>> >>> Geoffrey Wolf >>> >>> AB3LS - Amateur Radio Callsign >>> >>> University of Pittsburgh '14 >>> >>> gr...@pitt.edu >>> >>> liltechd...@me.com >>> >>> (412) 450-1310 >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
Larry, > A recent addition, on which I am a contributing developer, is TRX-Pan. > It is much simpler and cleaner looking than PowerSDR/IF and integrates > more tightly with the K3. Does TRX-Pan support SDR-IQ or is it limited to soundcard based devices? 73, ... Joe, W4TV On 4/6/2011 10:09 PM, Larry Phipps wrote: >Hi Geoffrey. I just read through your thread (I receive the reflector > in digest mode). I didn't see one of your questions answered, so I will > tackle it... > > I'm not aware of any version of PowerSDR which works with SDR-IQ. The > interface has to be a sound card. My favorite version of PowerSDR is the > /IF version by Scott, WU2X. I have tried others like PowerSDR/IQ, but > they are not as well integrated with the K3 or LP-Bridge. > > A recent addition, on which I am a contributing developer, is TRX-Pan. > It is much simpler and cleaner looking than PowerSDR/IF and integrates > more tightly with the K3. In fact, more tightly than any other > panadapter for the K3, I believe. You can read about it here, > http://www.telepostinc.com/TRXP.html TRX-Pan does not provide > demodulated audio as PowerSDR does, so it can't be used as a sub-rcvr, > but it does display and track passbands for both VFOs very nicely. It's > more like a P3 with huge screen and mouse control. > > I wasn't aware that Quisk now supports Windoze. Leigh might have > mentioned this and I just forgot. I will play with it when I have some > time. Maybe it could be customized to the level that TRX-Pan is in terms > of K3 / LP-Bridge integration. > > Before deciding on a PC based solution versus a partial PC based > solution versus a standalone solution, I would download and play with > the programs that would be required for any of these. They are all > available as a free download, although WU2X requests a donation to > support PowerSDR/IF if you decide to go that route. You can set these up > to control the rig and display noise from your sound card. This will > help you decide if the PC approach is right for you. > > 73, > Larry N8LP > > > > On 4/6/2011 5:11 PM, elecraft-requ...@mailman.qth.net wrote: >> Date: Wed, 6 Apr 2011 13:29:45 -0400 >> From: "Geoffrey Wolf" >> Subject: [Elecraft] SDR IQ/IF Questions >> To: >> Message-ID:<000f01cbf480$39143d10$ab3cb730$@gmail.com> >> Content-Type: text/plain;charset="us-ascii" >> >> Hello fellow SDR enthusiasts, >> >> >> >> I have looked around a little bit and haven't found a very definitive answer >> for the questions that I'm having about the way the K3 and external SDR >> equipment works. >> >> >> >> I've been looking into the LP-Pan which converts the IF output from the K3 >> into (im guessing) audio signals which then are converted into digital data >> by a soundcard. The trouble I'm having is understanding what exactly I/Q is. >>> From what I understand, I/Q is digital data that software like CW Skimmer >> understands. >> >> >> >> Now, I've also been looking at the SDR-IQ which does all of this internally >> by taking the IF output from the K3 and converts it directly into digital >> data which is then ferried to the computer over USB, forgoing the need for >> an extra soundcard. >> >> >> >> Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more >> developed/supported), and PowerSDR-IQ. What is the difference? >> >> >> >> I suppose the summary question of this email is. can you use PowerSDR/IF >> with an SDR-IQ rather than an LP-Pan? I personally would rather buy an >> SDR-IQ and take that extra hardware stage (possible audio loss) out of the >> picture. >> >> >> >> Thanks! >> >> >> >> Geoffrey Wolf >> >> AB3LS - Amateur Radio Callsign >> >> University of Pittsburgh '14 >> >> gr...@pitt.edu >> >> liltechd...@me.com >> >> (412) 450-1310 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
Hi Geoffrey. I just read through your thread (I receive the reflector in digest mode). I didn't see one of your questions answered, so I will tackle it... I'm not aware of any version of PowerSDR which works with SDR-IQ. The interface has to be a sound card. My favorite version of PowerSDR is the /IF version by Scott, WU2X. I have tried others like PowerSDR/IQ, but they are not as well integrated with the K3 or LP-Bridge. A recent addition, on which I am a contributing developer, is TRX-Pan. It is much simpler and cleaner looking than PowerSDR/IF and integrates more tightly with the K3. In fact, more tightly than any other panadapter for the K3, I believe. You can read about it here, http://www.telepostinc.com/TRXP.html TRX-Pan does not provide demodulated audio as PowerSDR does, so it can't be used as a sub-rcvr, but it does display and track passbands for both VFOs very nicely. It's more like a P3 with huge screen and mouse control. I wasn't aware that Quisk now supports Windoze. Leigh might have mentioned this and I just forgot. I will play with it when I have some time. Maybe it could be customized to the level that TRX-Pan is in terms of K3 / LP-Bridge integration. Before deciding on a PC based solution versus a partial PC based solution versus a standalone solution, I would download and play with the programs that would be required for any of these. They are all available as a free download, although WU2X requests a donation to support PowerSDR/IF if you decide to go that route. You can set these up to control the rig and display noise from your sound card. This will help you decide if the PC approach is right for you. 73, Larry N8LP On 4/6/2011 5:11 PM, elecraft-requ...@mailman.qth.net wrote: > Date: Wed, 6 Apr 2011 13:29:45 -0400 > From: "Geoffrey Wolf" > Subject: [Elecraft] SDR IQ/IF Questions > To: > Message-ID:<000f01cbf480$39143d10$ab3cb730$@gmail.com> > Content-Type: text/plain; charset="us-ascii" > > Hello fellow SDR enthusiasts, > > > > I have looked around a little bit and haven't found a very definitive answer > for the questions that I'm having about the way the K3 and external SDR > equipment works. > > > > I've been looking into the LP-Pan which converts the IF output from the K3 > into (im guessing) audio signals which then are converted into digital data > by a soundcard. The trouble I'm having is understanding what exactly I/Q is. > > From what I understand, I/Q is digital data that software like CW Skimmer > understands. > > > > Now, I've also been looking at the SDR-IQ which does all of this internally > by taking the IF output from the K3 and converts it directly into digital > data which is then ferried to the computer over USB, forgoing the need for > an extra soundcard. > > > > Now, I've seen two versions of PowerSDR. I've seen PowerSDR/IF (looks more > developed/supported), and PowerSDR-IQ. What is the difference? > > > > I suppose the summary question of this email is. can you use PowerSDR/IF > with an SDR-IQ rather than an LP-Pan? I personally would rather buy an > SDR-IQ and take that extra hardware stage (possible audio loss) out of the > picture. > > > > Thanks! > > > > Geoffrey Wolf > > AB3LS - Amateur Radio Callsign > > University of Pittsburgh '14 > > gr...@pitt.edu > > liltechd...@me.com > > (412) 450-1310 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
If you're interested in DSP code you might try using quisk instead of PowerSDR. It's written in mostly Python and a little bit of C, and works on Linux and Windows. I made some modules for it to talk to the K3 rigcontrol, but those aren't necessary to use it with the LP-PAN output, just for the click-to-qsy and frequency display. Leigh/WA5ZNU -- View this message in context: http://elecraft.365791.n2.nabble.com/SDR-IQ-IF-Questions-tp6246917p6247525.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
Oh thank you. I Have the handbook but didn't know there was a DSP section. I'll take a look at that. -- Geoffrey Wolf AB3LS (Amateur Radio Callsign) University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 On Apr 6, 2011, at 2:07 PM, Byron Servies wrote: > Hi Geoffrey, > > Perhaps the ARRL Handbook, Chapter 15 - "DSP and Software Radio > Design", might help? Section 15.6, in particular describes the math > behind calculating the in-phase (I) and quadrature (Q) portions of a > wave form. > > As for specific device compatibility with particular software > packages, the release notes for the software should list the hardware > it will work with. > > HTH, > > On Wed, Apr 6, 2011 at 10:29 AM, Geoffrey Wolf > wrote: > >> I've been looking into the LP-Pan which converts the IF output from the K3 >> into (im guessing) audio signals which then are converted into digital data >> by a soundcard. The trouble I'm having is understanding what exactly I/Q is. >>> From what I understand, I/Q is digital data that software like CW Skimmer >> understands. > > 73, Byron N6NUL > > - Northern California Contest Club > - CU in the 2011 Cal QSO Party 1-2 Oct 2011 > - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
Hi Geoffrey, Perhaps the ARRL Handbook, Chapter 15 - "DSP and Software Radio Design", might help? Section 15.6, in particular describes the math behind calculating the in-phase (I) and quadrature (Q) portions of a wave form. As for specific device compatibility with particular software packages, the release notes for the software should list the hardware it will work with. HTH, On Wed, Apr 6, 2011 at 10:29 AM, Geoffrey Wolf wrote: > I've been looking into the LP-Pan which converts the IF output from the K3 > into (im guessing) audio signals which then are converted into digital data > by a soundcard. The trouble I'm having is understanding what exactly I/Q is. > >From what I understand, I/Q is digital data that software like CW Skimmer > understands. 73, Byron N6NUL - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SDR IQ/IF Questions
Okay, Well thank you for the link. I have a little bit of reading up to do on I/Q. So I'm still a little bit confused in the K3 setup situation. So in both the situations with the LP-Pan or the SDR-IQ, the PowerSDR software would receive the same data? I'm having trouble understanding where the analog signals are converted into digital signals. In the case of the LP-Pan, I'm imagining that it happens at the soundcard? In the case of the SDR-IQ, it takes place inside the SDR-IQ... right? Sorry for my misunderstanding here... So my main question still stands, can you use PowerSDR/IF software with an SDR-IQ? Thank You! Geoffrey Wolf AB3LS - Amateur Radio Callsign University of Pittsburgh '14 gr...@pitt.edu liltechd...@me.com (412) 450-1310 > -Original Message- > From: k...@baymoon.com [mailto:k...@baymoon.com] > Sent: Wednesday, April 06, 2011 1:39 PM > To: Geoffrey Wolf > Subject: Re: [Elecraft] SDR IQ/IF Questions > > Read this... > http://education.tm.agilent.com/index.cgi?CONTENT_ID=4 > > > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
