Somebody must have already written the code to collect several hundred FFT bins of 100 or 125 millisecond duration over IP as single-line updates to a display app on the far end. With typical compression (LZV, RLL, etc.) that would yield around a 300kbps bitstream or so for 512 frequency bins and 1/8-sec updates; not really a lot of data for most modern Internet connections.
This is all really well-understood technology which is well supported by a number of development environments. I couldn't tell you what commercial products do this, if they do exist. On 11/20/17 11:58 AM, Tom wrote: > Hi, > That would be incredibly inefficient if you really want the whole IF. > The IF output of the K3 is 8.215 MHz so you would have to sample at > twice this. > On the other hand, the original questions was "Has anyone digitized the > K3S IF and streamed it over an IP connection?" and the answer is yes, > many people people have. > However, there is always something sampling the IF at the K3 and then > providing some sort of processing before hand. > For example you could hook up an SDRPlay and sample at 2MHz and you will > then have a maximum bandwidth of 2MHz. That will be perfectly fine. > However, again, it is not that efficient. What do you want your > panadapter to display? Your display has a finite number of pixels. > Today, the highest resolution would be 4K where you have 3840 data > points. Why send all 4 million data points when you need to display > only 3840? Of course I'm simplifying this a lot but it's the general idea. > There are lots of solutions out there. Just look up software defined > radios and dongles and find some drivers that will stream the data. > 73 Tom > va2fsq.com > > > > -----Original Message----- From: Jim Miller > Sent: Monday, November 20, 2017 2:32 PM > To: Tom > Subject: Re: [Elecraft] Digitized IF over IP? > > Remote panadapter > > Jim ab3cv > > On Nov 20, 2017, at 2:23 PM, Tom <[email protected]> wrote: > > Hi, > The questions is why? What are you trying to achieve? Tom > va2fsq.com > > -----Original Message----- From: Lynn W. Taylor, WB6UUT Sent: Monday, > November 20, 2017 2:14 PM To: [email protected] Subject: Re: > [Elecraft] Digitized IF over IP? > Latency is going to be a huge problem. > > 73 -- Lynn > >> On 11/20/2017 11:05 AM, Jim Miller wrote: >> Has anyone digitized the K3s IF and streamed it over an IP connection? >> 73 >> Jim ab3cv >> ______________________________________________________________ >> 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] > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > ______________________________________________________________ > 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]
