[R-390] 6C4 versus "W" and "WA"

[WA0HQQ]

Since I needed to pull my R-390A for some other work, I decided to 
duplicate Tim Shoppa's findings on the performance of 6C4 versus W and 
WA.  After 3-4 hours of tube swapping, hot fingers and careful 
measurements, I see similar results to Tim's.

The "will not work" reference will come off of the FAQ web site.  I 
checked back to the source and it had been around for a while - traced 
to a 1950's R-390A manual reference.

As far as the 'the "FAQ" and "Y2K" manuals are full of statements that 
are simply wrong' accusation in a previous posting - I say 'put up or 
shut up' - if you have knowledge of factual errors in either, please 
share them with the group and me, so they can get corrected.  They will 
not get fixed unless you provide data instead of rhetoric.

Al, WA0HQQ
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