Folks, Never mind... after an exhaustive and extensive (and fruitless) search for the noise problem, I accidentally discovered the problem. While listening to 40 and noting the time of each noise event, my Blackberry phone rang and made all kinds of racket on the radio.
So, pressing the "ignore call" button silenced the ringing, but just at that time, I saw the "upload/download" arrows on the Blackberry start flashing at the same rate as the noise in the receiver... Doh! In any case, just thought if any of you other SDR-1K folks had Blackberries and heard this peculiar noise, you would be happy to know where it's coming from. So, one more noise source down... Mark -----Original Message----- From: Mark Amos [mailto:[EMAIL PROTECTED] Sent: Sunday, April 16, 2006 8:57 AM To: 'FlexRadio@flex-radio.biz' Subject: D-44 noise Folks, I'm hearing an annoying D-44 artifact and I'm wondering if other folks are having it to. Every once in a while (perhaps 10 minute intervals) I hear what sounds like bad buzzy morse code traversing the sound field. It seems to start in the left channel and sometimes moves around. I thought it was my Bose headphones, but I've since heard it with an external amp/speaker listening to the D-44 output. Just wondering if anyone else hears this and/or knows how to get rid of it. It's relatively infrequent, and I've never been able to definitively correlate it to any specific activity. It's no where near the sidetone frequency of the radio, and I believe I've heard it when PowerSDR isn't running (though I don't often listen to the computer when I'm not on the radio, so this may not be the case.) Mark
