Re: Have old tubes, need INFO!

"jap" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> 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     (???)
> 1        1A7GT   (DK32,X14)
> 
> 3        1B3GT   (DY30,U41)
> 
> 1        41      (???)
> 
> 1        5-30    (???)
> 1        5R01    (???)
> 1        5R4GYA  (???)           rectifier
> 3        5U4G    (5Z10,GZ31,U52) rectifier
> 1        5U4GA/B (H52)           rectifier
> 
> 1        6AG7    (6L10, OSW2192, OWS2601)
> 1        6AQ5    (6L31, BPM04, EL90, N727) audio output
> 1        6B8H    (???)
> 2        6BA6    (6F31, EF93, PM04, W727) often used as an RF or IF amplifier
> 1        6BL7    (???)
> 1        6BQ6    (???)
> 2        6F6G    (KT63)  audio output
> 1        6CU6    (???)
> 1        6J5     (L63,L63B,OSW3112)
> 1        6K7     (EF39,OM6, PF9, W147, W61, W63)
> 1        6K8     (6C31)
> 4        6L6     (EL37) audio output - commonly used in old guitar amps and 
> radio/phonos
> 1        6N7GT/G (???)
> 1        6Q7     (DH63)
> 1        6R17    (???)
> 1        6SH7    (???)    very common in older radios
> 9        6SN7    (???)    ditto
> 3        6SQ7    (OSW3105)ditto
> 1        6W4GT   (???)  rectifier
> 1        6Z4     (6BX4) rectifier
> 
> 1        7F7     (???) "loctal" tube, probably from a car radio
> 
> 1        9A4     (???)
> 1        9AX     (6Q7?)
> 
> 2        OC3     (G105/1D,KD24,QS1206)  ballast
> 1        OD3     (???)                  ballast
> =====================
> 
> Thanks so much, in advance, for your collective assistance!
> 
> Best regards,
> Alan Pollard
> --

An old (late 40's or 50's) tube manual would ID all these for you.