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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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19th Apr 2018, 8:13 pm | #1 |
Retired Dormant Member
Join Date: Jun 2011
Location: Crew Green, Powys, Wales, UK.
Posts: 68
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Pye U50A
I have acquired a Pye U50A. It appears to be a 250W RF HPA module. Does anyone know what it was used with, the operating frequency or any other info?
I have included a few photos. The amplifier uses a single 4CX250B beam tube. |
19th Apr 2018, 8:29 pm | #2 |
Nonode
Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,013
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Re: Pye U50A
I know about U450B, maybe even U450L, but a U450A is new to me. Given your pictures will think - answer has to wait- for thinks.
Last edited by Jon_G4MDC; 19th Apr 2018 at 8:43 pm. |
20th Apr 2018, 12:32 am | #3 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,636
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Re: Pye U50A
This site: http://www.qsl.net/gm8aob/pye_service_manuals.htm says PYE U50A 50WATT VALVE FIXED STATION AMPLIFIER UHF.
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20th Apr 2018, 8:01 am | #4 |
Retired Dormant Member
Join Date: Jun 2011
Location: Crew Green, Powys, Wales, UK.
Posts: 68
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Re: Pye U50A
Thanks Bill,
The Pye Museum was my first call, but I got no hits on a their own search engine. I also confess to missing the listing you highlighted and thank you for pointing it out. Due to the death of the curator (and the sale of all items), I was unable to ask questions of the man that would have known, but had contact with the guy sorting the museum side out, Martin Briscoe. Items for sale @ http://www.itender.co/ The U50A is of no use to me as it is, so I will use its parts for either a small pantry transmitter or a audio amp. It has a nice 820V 290mA/85V 290mA transformer. I have just picked up a pair of 813's (and ceramic valve sockets) which will make something nice and warming on completion of my latest 807 project, a quad, push-pull affair. Regards Robert Criggion MW |
21st Apr 2018, 8:48 am | #5 |
Hexode
Join Date: Mar 2006
Location: Helston, Cornwall, UK.
Posts: 301
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Re: Pye U50A
An amateur might give you a decent price for that as it has all the parts to make a 432MHz linear amp. They are pretty rare.
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