Two channels of 16-bit 192kHz audio compressed with FLAC should use around 500kbits/s. That is a chunk of bandwidth, but it is fairly reasonable for a remote site. Lossy compression would use less bandwidth, but it would put an artificial noise floor on the spectrum display. Probably not a good experience.
wunder K6WRU CM87wj http://observer.wunderwood.org/ On Jan 14, 2015, at 1:51 PM, iain macdonnell - N6ML <[email protected]> wrote: > I did experiment with this concept a couple of years ago. At the > remote site, I captured I/Q from a LP-Pan to a sound card, using ulaw, > and streamed that to the local PC, where I fed it (via VAC, I think) > into some "SDR" software (maybe NaP3). It worked, but it was a > bandwidth-hog. To get 192kHz with 16-bit samples, I think that adds up > to 6Mbps. I suspect that not many remote sites have that sort of > upstream b/w available.... > > 73, > > ~iain / N6ML > > > On Wed, Jan 14, 2015 at 5:19 AM, <[email protected]> wrote: >> Sorry for my confusion, I was thinking IQ as the usable form of IF at the >> control site, not the raw 8 mHz IF. My idea would be to somehow get the IQ >> output from a LP-Pan or similar device, add another box on either end to >> send and receive the IQ data, then simply use the control stations computer >> soundcard and run your panadapter software of choice. Only problem here is I >> don't have a clue on what to use for the remoting of the IQ output from the >> LP-Pan... >> All this non-portable, not suited for hotel room use would work for me as I >> will be at a desktop computer for 6 months or so while remoting from my >> summer home. >> And of course to not stray from the original topic, it would be nice to >> have the control station use a P3 with the extra data lines intergraded into >> the 1258, or K3/0 mini mark II :-). >> >> >> 73 Jeff kb2m >> >> -----Original Message----- >> From: Elecraft [mailto:[email protected]] On Behalf Of Fred >> Jensen >> Sent: Tuesday, January 13, 2015 19:59 PM >> To: [email protected] >> Subject: Re: [Elecraft] K3/0 all in one box? + P3/0 >> >> Hmmm ... K3 1st IF is ~8 MHz. Could pose some problems for generally >> available "<something>overIP" for many people. I/Q sounds like a better way >> to go with a PX3? I guess that would require an outboard quadrature demod >> at the "real" K3. >> >> While I don't do remote stuff right now, we're eventually going to have to >> sell our 5 ac and move to a 1-story house, probably with CC&R's. >> Consequently, remote operation may be a part of my future. Since I got the >> P3, it is the almost total focus of my concentration when operating ... I >> would hate to lose the functionality. >> >> 73, >> >> Fred K6DGW >> - Northern California Contest Club >> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 >> - www.cqp.org >> >> On 1/13/2015 3:27 PM, Harry Yingst via Elecraft wrote: >>> When you stop and think about it I really wonder if they could make a >>> P3/0 For the most part much of the P3 screen does not change at any >>> given moment.so if they only send the changes I would venture to say >>> that much of it could besent over the wire much as we now send Voice >>> Over IP. Using the current chips for multimedia and possible some of >>> the open source CODEXsit may be a workable item, though I would expect >>> it to me a bit off a pricey option >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html Message >> delivered to [email protected] >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
