I've used the KIO3B CODEC for over 6 months in contests and DXing with MMTTY, 2Tone and GRITTY. Anecdotally, it is as good as or better than any internal or external PC soundcard I've ever used for these three decoders.
For PSK, JT65 and other digital modes I don't know how it stacks up with the high dynamic range soundcards. Perhaps the K3 CODEC has enough dynamic range, but I've not seen any evaluation of that. One issue I have with the K3S CODEC is that Windows installs a monaural level control rather than separate left and right channel level controls for the two receive audio streams. There also seems to be some kind of AGC action going on where the levels actually change over time. This appears to be eliminated by the chip manufacturer's CODEC driver that I found online, though it is still monaural. Ed W0YK _____________________________________________________________________ -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Robert Wood Sent: 14 June, 2016 11:50 To: 'Ken Arck'; [email protected] Subject: Re: [Elecraft] Performance of internal USB sound system compared toexternal one? also curious if anyone has used the USB audio into MMTTY or 2Tone for decoding RTTY and your report ? 73 Robert W5AJ -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Ken Arck Sent: Sunday, June 12, 2016 8:27 PM To: [email protected] Subject: [Elecraft] Performance of internal USB sound system compared to external one? Admittedly, I am a new owner of the K3s and am still learning my way around it. I bought it mainly for use an IF radio for my DEMI 2 mtr xvtr, which I use for EME work. It came highly recommended as one. Prior to the K3s, my EME workhorse radio was a Kenwood TS2K which actually worked "fine" but as most are. I am always looking to improve my station. I used a RigBlaster as the sound card interface with the computer used. I am using the USB port for everything - audio in/out, PTT, CAT control, etc. along with some VSP software. I also run a splitter on the RX line from the EME array with one side going to the DEMI xvtr and the other to a FuncubePro+ dongle. The K3s feeds WJST and the FCD+ feed MAP65, running side-by-side. Trying NOT to drag this out too much longer, it seems to me the K3s/DEMI setup simply doesn't decode as well as the TS2K did (does?) and I'm wondering if anyone has real world experience in comparing how well the USB audio method versus the IN/OUT and the Rigblaster interface to the computer's soundcard. The FCD+ decodes MUCH better than the K3s/DEMI setup as I currently have it whereas the TS2K seemed to be better on the weaker signals. Maybe I just don't have something setup correctly..... TIA Ken ______________________________________________________________ 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]
