[R-390] Variacs

[Scott, Barry (Clyde B)]

While the radios will run at 126.5VAC and be within the tolerance
specification, I think you have to look at what's happening to the various
voltages inside the radio at that level.  Filament, B-plus, etc., are all
affected by this variance.  When tubes were cheap and plentiful, this may
not have meant as much, but now that this isn't the case, I think it may be
wise to err on the low-voltage side and possibly prolong the life of some of
the unobtanium found in these radios.

Regards,

Barry(III) - N4BUQ


Dear Friends,

As per Dave Kamp in his last post...10% tol. would
give you more than enough room for the top...Surely no
USA sources go as high as 126.5V...???

So it may make it a bit irrel. for the 390 series..??

Regards,   John     (JLAP)