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Re: [Amps] 4-250a mounting

To: "James Horne" <>, <>
Subject: Re: [Amps] 4-250a mounting
From: "k7fm" <>
Reply-to: k7fm <>
Date: Sun, 25 Dec 2005 13:50:02 -0800
List-post: <>
My RCA Transmitting Tubes Technical Manual TT-5 states that the 4-250A/5D22:

"may be operated in vertical position only, base up or down."  RCA also 
gives the same operating conditions for the 4-400A and the 4-1000A.

Wonder how many of these have been mounted upside down.

73,  Colin  K7FM 

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