[Hallicrafters] Conversion of HT33A to HT 33B

[Carl]

A G3SEK regulator or even zeners would work but zeners are also shunt 
regulators and give only a little bit better IMD than gas tubes.

These days a MOSFET regulator is the way to go.

Carl
KM1H


----- Original Message ----- 
From: "John King" <k5pgw at yahoo.com>
To: <Hallicrafters at mailman.qth.net>
Sent: Sunday, January 01, 2012 10:52 PM
Subject: [Hallicrafters] Conversion of HT33A to HT 33B


> Does anyone have access to the instructions for putting 6 VR tubes in the 
> HT 33A just as the HT 33B has.
>
> While I am cleaning and refurbishing my HT 33A I would like to add the two 
> additional VR tubes but would like to have the recommended Hallicrafters 
> procedure for upgrading the HT 33A to the HT 33B.
>
> Thanks for your assistance and recommendations, 73, John, K5PGW
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