[Amps] Using old amps on WARC query

Joe Subich, W4TV lists at subich.com
Sun Jun 30 10:45:43 EDT 2013


I believe the early PA76 series amps *all* had plate chokes resonant
at 25 MHz and will not work on 12 meters.  It's been a long time since
I last looked at one.

73,

    ... Joe, W4TV


>> Please anyone can tell me the factors to consider, including burning
>> tank components, when operating old linear amplifiers on the WARC
>> bands, especially 12 meters.
>>
>> Alpha 76 PAC meaning the 3 tube version.
>> TenTec Titan One
>> Dentron DTR-2000
>> ICOM IC-2KL
>>
>> All these amps have factory-type conversions to TEN meters already
>> done. The Alpha has the swamping input taken out.  Other than that,
>> all amps are stock.
>>
>> Thanks for all specific info... 73,
>>
>> Charles Harpole
>> k4vud at hotmail.com
>>
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