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Thanks for that useful tip Phil - I love advice like that. For that recording the AGC-T was set at 101. Following your tip, tonight, it is at 85-ish - so it is now "lower" than it was before. On another note, a friend ran the two audio files through an analyzer and noted that Mercury was "flat" and the Kenwood was "notchy". <BR>
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Mercury rocks!<BR>
Dan<BR><BR>
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From: phil@pharman.org<BR>To: dquigley@msn.com; hpsdr@lists.hpsdr.org<BR>Subject: Re: [hpsdr] TS-B2000 vs Mercury<BR>Date: Sun, 4 Jan 2009 12:55:34 +0900<BR><BR><BR>
<DIV><FONT face=Arial>Hi Dan,</FONT></DIV>
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<DIV><FONT face=Arial>Thanks for the recording and Mercury sure sounds nice. One suggestion, to my ear it sounds like you have the AGC threshold set too low. How I normally run PowerSDR is to find a spot on the band where there is just noise and then increase the AGC-T control from a low value until the band noise does not increase any more. Back the control off just a little and that way the AGC is not acting on noise. </FONT></DIV>
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<DIV><FONT face=Arial>I think there is a bug in the AGC code that I need to talk to Bob N4HY about since if you set the AGC-T control too high then weak signals actually distort. </FONT></DIV>
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<DIV><FONT face=Arial>73's Phil...VK6APH </FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=dquigley@msn.com href="mailto:dquigley@msn.com">Daniel Quigley</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hpsdr@lists.hpsdr.org href="mailto:hpsdr@lists.hpsdr.org">HPSDR Reflector</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, January 04, 2009 2:08 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [hpsdr] TS-B2000 vs Mercury</DIV>
<DIV><BR></DIV>***** High Performance Software Defined Radio Discussion List *****<BR><BR>
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Hi Folks,<BR> <BR>Last night I did an A/B comparison between Mercury and a Kenwood TS-B2000. The receivers used the exact same antenna/tuner chain and settings were the same: <BR> <BR>Preamp:OFF <BR>Noise Blanker:ON <BR>TS-B2000 DSP Width: 0-5Kc <BR>HPSDR LSB Width : 0-5Kc<BR>RxEQ: OFF (Flat) on both receivers<BR> <BR>Mercury is running V2.2 <BR> <BR>I didn't normalize for audio level differences but I'll let you judge the rest...<BR> <BR>HPSDR:<BR><A href="http://alvargi.50megs.com/Camradio/hpsdr.mp3">http://alvargi.50megs.com/Camradio/hpsdr.mp3</A><BR> <BR>TS-B2000<BR><A href="http://alvargi.50megs.com/Camradio/hrd.mp3">http://alvargi.50megs.com/Camradio/hrd.mp3</A><BR> <BR>
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