[R-390] manual comparisons

[David Humbertson]

I have heard the same thing. Look at this tube list:

http://209.35.120.129/faq-tubes.htm

Dave - W3NP


-----Original Message-----
From: r-390-bounces at mailman.qth.net
[mailto:r-390-bounces at mailman.qth.net] On Behalf Of Scott Bauer
Sent: Sunday, January 02, 2005 8:05 PM
To: R390 List
Subject: [R-390] manual comparisons

I was reading my 1956 Army R390-A manual and is says not 
to substitute type 6C4W for a 6C4. It is written that the 
differences in characteristics are such that the type 6C4W will
not operate properly in the receiver. OK...

 What changed between 1956 and 1970? 

 My Navships 1970 manual lists the 6C4W as the tube to use.

 Scott W3CV 


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