I know it has been reported on this reflector that some old amps made
the mistake (in retrospect) of parking the resonance of the plate RFC at
24 MHz. The Ameritron RFC substitution seems like a good idea, just to
be safe.
73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.
On 6/30/2013 8:01 AM, Larry wrote:
I am no expert on this. I have a Dentron Clipperton-L that I had
applied the 10M fix to it years ago. But I fried the parasitic
suppressors when working WARC bands. At the suggestion of several on
the group I changed the RFC over to an Ameritron RFC and suppressor
assembly and that fixed the problems. Apparently the original Dentron
RFC was not very effective on the WARC bands. Not sure that applies to
the DTR-2000.
73, Larry W6NWS
-----Original Message----- From: Charles Harpole
Sent: Sunday, June 30, 2013 7:39 AM
To: amps@contesting.com
Subject: [Amps] Using old amps on WARC query
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@hotmail.com
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