"Frank" wrote in message
news:wdCRe.226160$tt5.43044@edtnps90...

I have seen it claimed that linear amplifiers often provide more than the
theoretical gain, and that the cause is some indefinable ionospheric
nonlinearity rather than meaningless S meters!

Regards,

Frank

We should not confuse more than advertized gain with more than advertized
output, though. A 1KW amplifier could quite likely have 1KW output with 70W
in. That does not mean 1.2KW linear output with 120W in. Still, the extra
gain is useful; some claimed 100W radios will not put out 100W on all bands.

Tam/WB2TT