[Amps] Using old amps on WARC query

[Charles Harpole]

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