Sam, How are you interfacing PowerSDR to the sound card program? If it is VAC, you might be seeing audio buffering problems that can cause the behavior you are seeing. Based on the way you have MixW configured, you can easily see (and hear) this behavior.
-Tim -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Samuel Cartinhour Sent: Wednesday, August 22, 2007 6:33 AM To: [email protected] Subject: [Flexradio] Power fluctuation when using PSK31 Hi, I've been trying to set up my SDR-1000 for PSK31 operation using MixW 2.18 and sometimes DigiPan. I am at v1.10.1 of PowerSDR. I had my first QSO last night (MixW) and received a good report on my signal. However, I've noticed the following: when I transmit an "idle" signal into a dummy load using either program, the forward power reported by PowerSDR fluctuates between 0 and 25 watts. I also read power fluctuations on my antenna tuner's meter. Is this normal for PSK31? Or is it diagnostic of a setup problem? If I key PowerSDR directly by clicking "TUN", there is no fluctuation. The forward power reads 8 watts steady. Some additional details: The sound card is an FA66. PowerSDR is set to DIGU. TX GAIN is at -8. Following a suggestion I saw on the reflector, the drive is set to 100 and the TX GAIN was adjusted until forward power was around 25 watts (although this was difficult due to the fluctuating reading as noted above). During transmission of an idle signal, the ALC reading ranges from -8 to -12 dBm. The CPU% varies between 10 and 20% whether or not I'm transmitting. I am not sure what additional information would be helpful in diagnosing the problem, so if I need to provide buffer settings, etc. please let me know. I checked the reflector archives and a similar question was posted once before, but I couldn't find a description of a solution. Thanks as always, Sam W2SNX _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
