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#1
October 19th 08, 03:22 PM
posted to rec.radio.amateur.equipment
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TRW Transistors
prc74b wrote:
I have an old Hallicrafters Transceiver that uses TRW PT5651 RF transistors as the Driver and P/P finals. It is a 10 watt 2-18 mhz transceiver used in the early to mid 60's. The finals are shot and I am looking for replacements. I can not find data sheets, specs, are any information on these anywhere. Its like they didn't exist. I am looking for any type of replacement. I can't even tell if they are Pnp or NPN. They are single stud mount, with 4 solder tabs. The curcuit is broadband, and the B+ is 12-14 volts. Thanks for any help. Joe Munson WA4VAG Does the transceiver have a model number? |
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#2
October 19th 08, 08:39 PM
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#3
October 20th 08, 12:26 AM
posted to rec.radio.amateur.equipment
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TRW Transistors
prc74b wrote:
'Dave[_18_ Wrote: ;651539']prc74b wrote:- I have an old Hallicrafters Transceiver that uses TRW PT5651 RF transistors as the Driver and P/P finals. I can not find data sheets, specs, or any information on these anywhere. Its like they didn't exist. I am looking for any type of replacement. I can't even tell if they are Pnp or NPN. They are single stud mount, with 4 solder tabs. The curcuit is broadband, and the B+ is 12-14 volts. Thanks for any help. Joe Munson WA4VAG - Does the transceiver have a model number? No marking of any kind on the unit. But I believe to be a Hallicrafters TR-9. That's a bad-ass looking radio. http://www.qsl.net/la5ki/big/tr9.jpg |
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#4
October 21st 08, 05:15 AM
posted to rec.radio.amateur.equipment
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TRW Transistors
No, mine was a different model. This is really cool looking.
"Dave" wrote in message ... prc74b wrote: 'Dave[_18_ Wrote: ;651539']prc74b wrote:- I have an old Hallicrafters Transceiver that uses TRW PT5651 RF transistors as the Driver and P/P finals. I can not find data sheets, specs, or any information on these anywhere. Its like they didn't exist. I am looking for any type of replacement. I can't even tell if they are Pnp or NPN. They are single stud mount, with 4 solder tabs. The curcuit is broadband, and the B+ is 12-14 volts. Thanks for any help. Joe Munson WA4VAG - Does the transceiver have a model number? No marking of any kind on the unit. But I believe to be a Hallicrafters TR-9. That's a bad-ass looking radio. http://www.qsl.net/la5ki/big/tr9.jpg |
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#5
October 21st 08, 05:14 AM
posted to rec.radio.amateur.equipment
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TRW Transistors
I believe that I used to have one of those. It had a 6kHz mechanical filter,
a roller inductor matching network, and it was AM and CW mode. I ended up selling it at a hamfest several years back for 40 dollars. A nice piece. Pete "prc74b" wrote in message news  'Dave[_18_ Wrote: ;651539']prc74b wrote:- I have an old Hallicrafters Transceiver that uses TRW PT5651 RF transistors as the Driver and P/P finals. I can not find data sheets, specs, or any information on these anywhere. Its like they didn't exist. I am looking for any type of replacement. I can't even tell if they are Pnp or NPN. They are single stud mount, with 4 solder tabs. The curcuit is broadband, and the B+ is 12-14 volts. Thanks for any help. Joe Munson WA4VAG - Does the transceiver have a model number? No marking of any kind on the unit. But I believe to be a Hallicrafters TR-9. -- prc74b |
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