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LF: Direct LF Upconverter

To: [email protected]
Subject: LF: Direct LF Upconverter
From: "Andy Talbot" <[email protected]>
Date: Sat, 17 Jan 2009 23:59:10 +0000
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Direct soundcard to LF upconverter; image reject mixer with allpass
phase network for a few hundred Hz bandwidth.

           http://www.g4jnt.com/LFUpconv.pdf

Around 40dBc sideband rejection, so a bit marginal for the
perfectionist but probably difficult to do very much better without an
awful lot of phase and amplitude tweaking.

Andy  G4JNT
www.g4jnt.com


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