<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.6001.18183" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>The Mercury will receive a 65 MHz signal - just try
it. Power SDR must be tuning to the image (?)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>But beyond this, I note that the ADC is good to 700
MHz and the driver amp to 1.8 Gz - the limiting component is the transformer
which is good to at least 300 MHz. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So - if you bypass (remove?) the low pass filter,
you should be able to receive sampling-alias frequencies that cover 2m and 222
MHz and possibly even 70 cm. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Has anyone tried this?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>From a theoretical point of view, how much
degradation is to be expected in the higher Nyquist bands? </FONT></DIV>
<DIV><FONT face=Arial size=2>(sensitivity/NF versus the 1-60 MHz range, for
example)</FONT></DIV>
<DIV><FONT face=Arial size=2>Would an appropriate preamp restore performance to
something acceptable?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ken</FONT></DIV></BODY></HTML>