[ARC5] A Tube Puzzle

[Richard Knoppow]

----- Original Message ----- 
From: "J. Forster" <jfor at quikus.com>
To: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
Cc: <kgordon2006 at frontier.com>; <arc5 at mailman.qth.net>
Sent: Monday, April 30, 2012 4:01 PM
Subject: Re: [ARC5] A Tube Puzzle


>
> I believe W signifies a ruggedized tube for higher 
> vibration service.
>
> -John

     While a lot of W tubes are ruggedized the W 
specifically means the tube was made for a government 
contract, either directly for the government or for a 
contractor.  Some W tubes may have had special 
specifications or constructions, such as being vibration 
resistant, but its very difficult to find the information. 
In general they are directly interchangeable with standard, 
i.e., non-W tubes.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com