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From: Peter Chadwick <>
Date: Thu, 29 Jun 2006 09:35:32 +0200 (CEST)
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Tom said:
>People can't "hear" the distortion of a class C amp on frequency unless it is 
>terribly bad. <
That's very true. I was told that the earliest RAF WW2 airborne VHF 
transceivers used a Class C grid leak biased PA with modulation on the driver 
stage. The distortion was considered 'acceptable'. Now, to me, all aircraft 
comms sound distorted anyway, so they probably wouldn't notice......
Peter G3RZP
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