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			On Tue, 02 Dec 2003 03:28:24 GMT, in rec.radio.amateur.equipment youwrote:
 
 Hello all,
 
 This is my first post, so please be kind.
 
 My Grandpa was an avid Ham and Shortwave Radio enthusiast.  After he
 passed, I found a box full
 
 of old tubes in his garage.  I would like to gain some knowledge about
 the applications of the
 
 various tubes, and ultimately find out if they would have any value to a
 collecter.  Below is a
 
 complete list, along with what cross reference numbers I have been able
 to locate, so far.  Any
 
 help with THAT is also much appreciated!
 =====================
 Vintage Vacuum Tubes:
 
 Count    Tube#    Cross Reference #'s
 =====    =====   ===================
 8        16A     (6AM5)
 1        16Z     (???)
 not sure of these
 
 1        1A7GT   (DK32,X14)
 
 battery operated radio.
 
 3        1B3GT   (DY30,U41)
 
 IIRC, the high voltage rectifier out of many b&w tvs...
 
 
 1        41      (???)
 
 old, possibly audio power. 5 or 6 pin base, might be confusing it with
 a #42
 
 
 1        5-30    (???)
 1        5R01    (???)
 Don't know
 
 1        5R4GYA  (???)
 3        5U4G    (5Z10,GZ31,U52)
 1        5U4GA/B (H52)
 
 Power rectifiers, common cathode, two plates, half wave rectifier.
 
 
 
 1        6AG7    (6L10, OSW2192, OWS2601)
 
 pentode, video amp.
 
 1        6AQ5    (6L31, BPM04, EL90, N727)
 
 audio power output pentode
 
 
 1        6B8H    (???)
 
 ???
 
 2        6BA6    (6F31, EF93, PM04, W727)
 
 IF amplifier
 
 
 1        6BL7    (???)
 1        6BQ6    (???)
 
 don't quite remember
 
 2        6F6G    (KT63)
 
 magic eye tube, used as indicator.
 
 1        6CU6    (???)
 
 
 1        6J5     (L63,L63B,OSW3112)
 dual triode
 
 1        6K7     (EF39,OM6, PF9, W147, W61, W63)
 1        6K8     (6C31)
 
 metal tubes, used in older radios/tvs
 
 
 4        6L6     (EL37)
 
 audio power output
 
 1        6N7GT/G (???)
 triode, I think, metal
 
 1        6Q7     (DH63)
 1        6R17    (???)
 1        6SH7    (???)
 
 not sure
 
 9        6SN7    (???)
 
 dual triode, octal
 
 
 3        6SQ7    (OSW3105)
 
 don't quite remember
 
 1        6W4GT   (???)
 1        6Z4     (6BX4)
 
 rectifiers
 
 
 1        7F7     (???)
 
 "loctal" tube, good for HF use (at that time), possibly tv tuners
 
 
 
 1        9A4     (???)
 1        9AX     (6Q7?)
 not sure
 
 
 
 2        OC3     (G105/1D,KD24,QS1206)
 1        OD3     (???)
 
 voltage regulators   105 and 150 volts, good for about 30 ma, max,
 parallel regulators.
 
 
 That's the best I remember.
 
 Harvey
 
 
 =====================
 
 Thanks so much, in advance, for your collective assistance!
 
 Best regards,
 Alan Pollard
 
 
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