"jap" wrote in message
...
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 (???)
3 5U4G (5Z10,GZ31,U52)
1 5U4GA/B (H52)

1 6AG7 (6L10, OSW2192, OWS2601)
1 6AQ5 (6L31, BPM04, EL90, N727)
1 6B8H (???)
2 6BA6 (6F31, EF93, PM04, W727)
1 6BL7 (???)
1 6BQ6 (???)
2 6F6G (KT63)
1 6CU6 (???)
1 6J5 (L63,L63B,OSW3112)
1 6K7 (EF39,OM6, PF9, W147, W61, W63)
1 6K8 (6C31)
4 6L6 (EL37)
1 6N7GT/G (???)
1 6Q7 (DH63)
1 6R17 (???)
1 6SH7 (???)
9 6SN7 (???)
3 6SQ7 (OSW3105)
1 6W4GT (???)
1 6Z4 (6BX4)

1 7F7 (???)

1 9A4 (???)
1 9AX (6Q7?)

2 OC3 (G105/1D,KD24,QS1206)
1 OD3 (???)
=====================

Thanks so much, in advance, for your collective assistance!

Best regards,
Alan Pollard

Most of the numbers I recognize are radio tubes from the 40s or so.
Others on your list may also be familiar, but the numbers may be
unreadable. A number like 5-30 might be a date code. Something like
the 30th week of a "5" year such as 1945 or 1955.

As far as value, you can check the tube price list at:

http://tubesandmore.com/

Most tube vendors sell new tubes at a lower price. Used tubes go for
even less. Lots such as this are frequently sold on E-bay. This is a
better than average lot. Most of the ebay lots have a bunch of series
string TV tubes, which don't have much real value now.

If you're curious about the characteristics of the tubes:

http://hereford.ampr.org/cgi-bin/tube

If you want to know alot about how tubes work:

http://www.john-a-harper.com/tubes201/

Frank Dresser