[Amps] Triode vs Tetrode Amp

Peter Voelpel df3kv at t-online.de
Thu Apr 26 15:19:47 EDT 2007


What tetrode people do you think of?
The tetrodes in Europe are specifified commercially and are typically -50db
down or better on 3rd order IMD.

73
Peter

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Tom W8JI

2.) The tetrodes, when we cut through the advertising hyperbole, had worse
IM performance than Eimac triodes. The trick the manufacturers used was
Eimac spec'd the tubes for worse case IM using the commercial dB below one
tone of two equal tones, while the tetrode people used dB below PEP. 



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