If your running some of the newer soft ware make sure......... Audio buffer size is 1024 or less DSP Buffer size on transmit is 1024 or less If your running older software without the split transmit recieve buffer size set to 1024 These setting will work without latency on a firebox or a fa-66 souncard running in 96k mode in SSB In General Options make sure you are running in Real Time if possible To test for RF into the audio chain just turn your power all the way down and then key the radio and talk.....do you have latency? If you do it's not rf feedback......If you don't gradually increase power to the level that you start having latency to prove feedback If running a fa-66 sound-card set the Start, Control Panel, Edirol FA-66 to buffer size min.
On Sat, 2008-06-14 at 06:55 -0400, Mike Naruta wrote: > Hi Paul, > > > There is a latency (delay) between what you > say into the microphone (or what you send > on CW) and what goes out on the air. Most > reports of echo turn out to be RFI. The > transmitted signal is picked up by the > microphone input slightly behind your speech > and is an echo of what you just said. > I'm guessing that higher gain in DX or > Compander is revealing the RF pickup. > > If you have a second receiver, try transmitting > into a dummy load and listen on the second > receiver. Then compare with transmitting > on your antenna. > > > Mike - AA8K > > > > Paul Giusti wrote: > > Hi All > > > > > > > > I seem to be experiencing on transmit what sounds like an > > "echo" its sounds like a delay i.e. a few milliseconds at first i thought it > > was RF getting in..but on air reports say its an echo. > > > > > > > > I have tried on current Test SVN as well as K6JCA consoles > > and both have the same effect..it seems to appear only when compander or DX > > setting is uded. > > > > > > > > Its a late model SDR1000 (Jan 07 Build) using a FA66 and a > > Heil HM-10 Dual Insert microphone. The microphone is plugged into input 1 on > > the FA66. I use sample rate of 192khz. > > > > > > > > Any advice would be greatly appreciated in finding the cure > > of the "echo" > > > > > > > > Thanks > > > > > > > > Paul - VK3APG > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kb.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
