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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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19th Jun 2020, 3:15 pm | #1 |
Octode
Join Date: Jan 2004
Location: Southport, Merseyside, UK.
Posts: 1,156
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Mystery Valve
I've been sorting through a few old 4 pin battery triodes and came upon this one which is a mystery to me, There's no lettering on the glass just the Cossor label, I've looked through all my valve books and can't find any 4 pin valves with a 6V filament, only 2V and 4V, has anyone any idea what it could be please?
The full label description reads, "HF and Detector specially designed for high frequency coupling and rectification." It's a bit academic though as it would require considerably more than 6V to get any electrons flowing through it. Thanks John |
19th Jun 2020, 3:33 pm | #2 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Mystery Valve
Cossor 610HF?
Lawrence. |
19th Jun 2020, 3:45 pm | #3 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: Mystery Valve
Possibly from a 1927 Cossor Melody Maker: http://www.valve-radio.co.uk/literat...ction-leaflet/
(fourth image - instructions) |
19th Jun 2020, 3:53 pm | #4 |
Octode
Join Date: Jan 2004
Location: Southport, Merseyside, UK.
Posts: 1,156
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Re: Mystery Valve
I was just coming back on to say I know there are 5V UX4 American ones but it looks like you've identified it, I've just checked and it's not in either my Wireless World data book or the AVO valve tester one but I've now seen it on the web.
Thank you very much Lawrence. John |
19th Jun 2020, 3:57 pm | #5 | |
Octode
Join Date: Jan 2004
Location: Southport, Merseyside, UK.
Posts: 1,156
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Re: Mystery Valve
Quote:
Thanks John |
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20th Jun 2020, 5:00 am | #6 |
Heptode
Join Date: May 2017
Location: Konongo, Ghana
Posts: 514
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Re: Mystery Valve
Your valve is mentioned here: https://www.radiomuseum.org/tubes/tu..._detector.html
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