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<DIV><FONT size=2 face=Verdana>During the three weeks I've had my Hermes I've
been experiencing intermittent problems with AGC. Sometimes the
receiver performs as if there's no AGC action at all. This was first
noticed when strong signals came blasting through, so loud as to cause
distortion in the speaker. With a signal generator connected to Rx input I
was able to confirm no (or very little) AGC action. The problem is highly
intermittent - it occurs only occasionally and can be "fixed" by resetting the
database and then importing it again. The database itself remains intact
but it appears that whatever is mirroring it into PSDR is getting
corrupted. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Verdana>I have AGC slope set to 0 and Fixed Gain =
20dB. I've measured audio level on a scope with a signal generator feeding
into the receiver. When operating correctly (which is most of the time) I
see audio increasing in amplitude until about 70dBm, thereafter flattening out
as signal level is increased. When the failure occurs the audio level
continues to increase with increasing RF until severe distortion
occurs. These tests are conducted in SSB mode with the signal generator
frequency set 1 kHz into the audio passband.</FONT></DIV>
<DIV><FONT size=2 face=Verdana></FONT> </DIV>
<DIV><FONT size=2 face=Verdana>I'm running W5WC RX2 v2.2.5.0 PSDR under Windows
xp. The machine is an older Dell and CPU usage is about 50% for single
receiver operation. I've seen the same behavior on a newer, faster machine
running Windows 7.</FONT></DIV>
<DIV><FONT size=2 face=Verdana></FONT> </DIV>
<DIV><FONT size=2 face=Verdana>I'm wondering if anybody else has seen this
problem.</FONT></DIV>
<DIV><FONT size=2 face=Verdana></FONT> </DIV>
<DIV><FONT size=2 face=Verdana>73,</FONT></DIV>
<DIV><FONT size=2 face=Verdana>Rod, KQ6F</FONT></DIV></BODY></HTML>