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[AMPS] Misc. Oscillations

To: <amps@contesting.com>
Subject: [AMPS] Misc. Oscillations
From: W8JI@contesting.com (Tom Rauch)
Date: Mon, 6 Mar 2000 06:08:01 -0500

> Adjusting filament-v is simpler than tuning a tank.  Several models of
> Henry Radio amplifiers use approx. 6v on 3-500Z/8008 (4.8v) filaments. 
> How safe is that, Mr Subich?


3-500Z's have 5 volt filaments, not 4.8. Your twisting of numbers 
reminds me of the national budget!

While running proper voltage is a good idea, the number of tubes 
that fail in amateur service from loss of filament emission is 
extremely low. The largest failure mode by far is gas ingress or 
poor welds.


73, Tom W8JI
w8ji@contesting.com

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