Identifying Vacuum Tube Purposes

[Les Dickson]

I’ve been going through boxes of tubes I’ve acquired over the past couple of years and trying to sort out those that were used in radios (that I want to keep) from those that were used in televisions (which are just taking up room I don’t have). I’ve been entering tubes into the “Search for models by Tubes/Valves/Semiconductors” section of the Radio Museum web site and I’ve come across several tubes where I can’t find any information on what they were designed for. Is there another online resource that I can use to identify the usage of tubes?
Here are a few that I can’t find anything about,

• 17DE4
• 6328
• 5FG7
• And one very old one Zetka Process -Z-R-F

[John Greenland]

Les,
I have found that regular tube manuals ( I have most of the RCA’s) will normally give enough info.
For example the 17DE4 is the 17 volt version of a 6DE4 which is a TV damper tube
The 5FG7 is the 5 volt version of a 6FG7 VHF mixer Osc tube from TV’s.
The 6328 is a photomultiplier for detection and amplification of ultraviolet light.

Hope this helps

[garykuster]

And the Zetka process ZRF is part of the Flux Capacitor in Back to the Future.

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[Les Dickson]

Thanks, Dr. Emmet Brown. Good to know we have a backup for the flux capacitor.

[Author]

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