[Elecraft] SDR IQ/IF Questions

Wed Apr 6 23:35:34 EDT 2011

  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-request at mailman.qth.net wrote:
>>> Date: Wed, 6 Apr 2011 13:29:45 -0400
>>> From: "Geoffrey Wolf"<liltechdude13 at gmail.com>
>>> Subject: [Elecraft] SDR IQ/IF Questions
>>> To:<elecraft at mailman.qth.net>
>>> Message-ID:<[email protected]>
>>> 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
>>>
>>> grw20 at pitt.edu
>>>
>>> liltechdude at 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 at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>