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[Yaesu] 3SK51 Mixer problem

To: <yaesu@contesting.com>
Subject: [Yaesu] 3SK51 Mixer problem
From: jklinkhamer@thorntoninc.com (Jon Klinkhamer)
Date: Thu, 21 Feb 2002 16:07:50 -0500
I have a 22Mhz and a 50Mhz signal going into a balanced MOSFET, 3SK51. I'm
expecting a 28Mhz signal output after a low pass pi filter. My problem is
that the 22Mhz is always on the output according to my scope and freq
counter. The circuit seems straight forward enough. I tried two different
FETs with the same result. Is there anybody out there that can steer me in
the right direction?


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