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Re: [Amps] Faulty MFJ 269

To: amps@contesting.com
Subject: Re: [Amps] Faulty MFJ 269
From: Manfred Mornhinweg <manfred@ludens.cl>
Date: Sat, 07 Jul 2012 18:46:15 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Andy,

> In simple terms the impedance meter isn't working.

Check the diodes in the impedance bridge. These are quite easy to fry. A 
quite modest discharge of static into the antenna terminal is enough to 
end their life as semiconductors, and turn them magically into conductors!

> Is this fixable?

Most likely yes. The impedance meter circuit is quite simple.

Manfred

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