[Milsurplus] 2E22 V 807

[Hue Miller]

The BC-1209 / SCR-583 and the TRC-10 use the 2E22, altho one wonders why
the latter set, CW only, needed a quick-heat tube. I think i changed its 
2E22
to an 807 many years back (but not in the jungles of CBI ) after i noticed 
the
signal hummed pretty bad, when using the AC supply. Designers apparently
unbothered by this feature.
Back to the BC-1209,  it just occurred to me that it's odd that this set, 
never
used in any quantity, was supplanted by a radio with much lower BC and SCR
numbers, the BC-654/ SCR-284.  I also noticed that the BC-1209, altho larger
and much heavier than the BC-654, doesn't do any more for your money, except
put out a lot more harmonics. It truly has an output circuit that is an 
equal-
opportunity employer for harmonics of any number.
( I also remembered that the classic Feb 44, Radio News, the one
that supposedly is an exporter's favorite, has a pix of a radio 
misidentified as the
SCR-583. I think, IIRC, that the photo is of some spy type set, maybe the 
Lucy
receiver or something like that. ) ( How am i doin' on the arcane-o-meter? )
It also occurred to me that the V-100 radio manufactured for Russia, some
sent to China theater for our use, used the eight-zero-seven instead of the
2E22. Maybe, i'd guess, that was because spares would be easier for the
Lend-Lease partner to come up with?

BTW, why are the all the 19-Set radios in the Western Ally countries?
I've not heard of any 19 sets surfacing in Russia, have you? Despite
the Cyrillic (sp?) language markings?

I have wondered whether it would be possible to use a sweep tube with
an independent suppressor, in place of the 2E22. There are only a couple
of sweep tubes with this feature. Or maybe 2E22s aren't that pricey yet -
it's not like they're being used up at a steady rate anymore - unlike some
tubes used in the last gen of tube SSB radios. -Hue Miller