[Kenwood] Kenwood Digest, Vol 103, Issue 8

Tue Nov 20 13:17:45 EST 2012

Variacs are great, but if you drop the incoming AC, the B+ will also be reduced: I sometimes use power resistors on the filament output side in cases like this, keeping B+ where it should be for transmitting.

Jim K6FWT

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Today's Topics:

   1. TL-922A question (rbig)

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Message: 1
Date: Mon, 19 Nov 2012 00:54:22 -0600
From: "rbig" <rbig at cox.net>
Subject: [Kenwood] TL-922A question
To: <kenwood at mailman.qth.net>
Message-ID: <C08E44493080405F956239D13349C391 at rone27fa26a9e0>
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I'm told we should have 4.9v  fil voltage on the 3-500s.

We have 5.3v

Is using a 220v variac a fairly simple solution to getting the fil voltage down to 4.9 ?

I guess I could also put a resistance on one side of the ac primary of the fil transformer.   That could drop it down slightly.    

Are there any commercially available solutions?

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End of Kenwood Digest, Vol 103, Issue 8
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