[ForSale-Swap] strange olde tubes FS

Eric A. Jones ejones at hiwaay.net
Mon Feb 11 12:08:55 EST 2008


de N4TGC Eric A. Jones, 6537 County Road 61, Florence AL 35634     h. 
256.764.0675

There's a lot more where these were lurking, but I'll start with a 
small lot:

one each Eimac 304TH (VT-254) and 304TL (VT-129).  Originally used in 
military radar-pulse and other oddities such as ART-3 & BC-912; good 
for up to 1 kw Ham use.  Envelope contains four 75TH in parallel on a 
large 4-pin base with side and top caps.  Filaments check good - can't 
test otherwise.  $10 each

Eimac 327-A (aka 5C37)  ~225 mc UHF oscillator triode.  Unique 2-pin 
T-4AD (4BC) base with also 2 pins out opposite sides and one top pin.  
Good fil. req. 10.5v @10.7a  100 watt plate, umho 31 -  $10

RCA 826 UHF (250 mc) tx triode, base 7BO (same as 829B, etc.)  7.5v, 4a 
fil., umho 31, 60 watt with cooling - $10

3B28 xenon-gas rect., fil. 2.5v, 5a, 10 kv PIV, 1/4 a (or 5 kv @ 1/2 a) 
  upgraded 866A - base is loose - $5

(two) CX-380 - the balloon-envelope, Cunningham v. of the #80 full-wave 
rectifier, fits and works the same.  Test good on Hickok 752A.  $15 
each, guaranteed

NOSIB (new, old-stock, in box) CK1006 full-wave gas rect.  fil. 1.75v@ 
2.25a or 2.5v @ 2a  good for 200 ma @ 1.6 kv - $5

5-pin mystery balloon tube with top cap.  Numbers gone - looks like a 
triode inside.  Dirty, cap loose.  Good 2/2.5v fil on pins 1,5; gives 
purple flash when checked as #33 or #36 - needs gas cooked off or is 
just bad.  FTGH

Super mystery tube:  has unusual, smaller-than-normal octal base, tiny 
envelope about 1" tall.  Innards unrecognizable: looks like a heater 
coil and two arc-posts (?!)  FTGH, but I'd like to know what it is ... 
made by Raytheon; numbers 260 over 713 ink-stamped on base.

That's all for now.	e



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