<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=NL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hello all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I have difficulty to get WSPR reception working via VAC (trial version). <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I have Atlas and Mercury-Eu working well with PowerSDR PowerSDR (v1.10.4+ BaseSVN 2025). Previously I connected the analog audio output of Mercury to the analog input of the computer soundcard and WSPR 2.11. I then had -30 dB rx noise, lots of WSPR signals on 40m and a lot of decodes, even with weak DX signals. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I then installed with VAC (4.10.0.2536 trial). I have setup two Virtual Audio Cables. I set the PowerSDR audio output as Virtual Cable 2, and WSPR audio input as Virtual Cable 2. In the VAC Control Panel I set Virtual Cable 2 as follows: Max.instance 20, Ms per int 5, SR range 11025..96000, BPS range 8..32, Stream format Cable range, Volume control disabled. With PowerSDR and WSPR started, it reads SR 48000, BPS 32, NC 2, Rc stms 1, Pb stms 1.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I see the Overflow counter increase nearly 1 per second, Underflow is on 42 and steady. In WSPR I see Rx noise at -28dB and I see a waterfall and some transmissions from time to time, but nothing is decoded. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Please you advice!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>73, Ben PA5BW pa5bw@xs4all.nl<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>