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Old 23rd April 2013, 05:17 AM   #1
diyAudio Member
 
Join Date: Apr 2013
Default opinions please!

I have compiled a list of the tubes I currently have. Id be really grateful for some advice on whether or not any of these things are worth hanging on to. Thanks!!
( if you see numbers that look off.. ask me.. I may have transposed or written something worng.. er wrong)
Ben
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Last edited by benindavis; 23rd April 2013 at 05:30 AM.
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Old 25th April 2013, 11:37 PM   #2
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Join Date: May 2007
Greetings from FixitLand!

What tubes from this list you decide to keep or dispose will depend on what you want to do with them. Are you interested in a tube-amplifier project? Building your own TV (don't!)? Something else with tubes?

Many of these tubes are series-heater tubes intended for TV use. That doesn't necessarily make them bad or worthless. Assuming you plan an amp project, and depending on the scope of that project, something could be done with the 12AU7, 6AQ5, 6AU6[A], 6AU8, 6AW8A, 6FQ7, 6GH8[A]. The 8CG7 and 8FQ7 tubes have uses, too -- but you have to deal with the eight-volt heaters. The "5OC5" is 50C5 (fifty-see-five; has a 50-volt heater) and is used in five-tube AC-DC "All-American-Five" radios along with the 12BA6, 12AV6 and, sometimes, 12AU6.

Get hold of a tube manual for details on all these. The RCA tube manuals can be downloaded from Pete Millett's site: Tube Data

If you like to experiment, nearly any of these tubes has a use. Might be hard finding compactron sockets for the tubes like those ending in '11'.

Take care,
--
J. E. Knox "The Victor Freak"
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Old 25th April 2013, 11:42 PM   #3
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Join Date: May 2007
Greetings from FixitLand!

Just noticed..."B5W4" is a 35W4 rectifier, one of the "AA5" radio tubes (the rectifier, to be specific). The "4DTGA" has to be a 4DT6A. "6J56A" is likely a 6JS6A. Not sure on "43H4" (4BH4?) I don't know what a "ERB8" or "KEBC" might be. The 1X2B tube is a high-voltage rectifier for TVs, and that's about its only use.

Have you the means to test these tubes?

Take care,
--
J. E. Knox "The Victor Freak"
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Old 26th April 2013, 06:00 PM   #4
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Join Date: Apr 2013
The idea of building an audio amplifier is attractive to me! As for being able to test them I have no means, but they were in a box labeled "good tubes' The old guy who had them was a tv/radio repair guy. (Estate sale)
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