[Boatanchors] EF50 Tube

[Al Klase]

Mike,

The 9-pin loctal was strictly a European thing, introduce by Philips in 
1938.  I've never seen it supported by any tube testers on this side of 
the pond.  See: https://en.wikipedia.org/wiki/Tube_socket#Other_loctals

Might be easiest just to buy another tube fro 5 bucks: 
https://vacuumtubesinc.com/index.php/catalogsearch/result/?q=ef50

Al

Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

On 10/23/2016 2:44 PM, Michael Bittner wrote:
> I'm trying to test an EF50 tube.  Radiomuseum says that the EF50 tube is "identical" to a CV-1091.  My TV-7/DU tube tester data has settings for testing the CV-1091.  However, both tubes a 9-pin loctals and the TV-7 does not have a socket for 9-pin loctals, only 8-pin loctals.  What's going on here?  Help, is there some adapter that's meant for the TV-7 to allow testing 9-pin loctals?     Mike, W6MAB
>
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