Re: [Amps] Power-off tube cooling

To:	"Ian White, G3SEK" <g3sek@ifwtech.co.uk>
Subject:	Re: [Amps] Power-off tube cooling
From:	peter.chadwick@Zarlink.Com
Date:	Mon, 19 Jan 2004 14:14:04 +0000
List-post:	<mailto:amps@contesting.com>

The 4CX1000 data sheet says it needs cooling air at the same time as the
application of heater  volts.

Frightening to realise that the 4X150/4X250 basic design is older than I
am, it being in production in 1946.........

73

Peter G3RZP

(back in the UK - warmer than Maryland!)


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