[AMPS] IMDs

[Ian Roberts]

G0MJW wrote:
> 
> I happened to have an FT690R on the bench and the posts regarding IMDs
> The ALC was used to set the output.

It's a pity you didn't rather use the audio gain to set the output at
the required PEP?
Tests such as this are linked to the old adage "linearity must be
maintained", ALC is a form of compression.
Possibly the results would have been much better, and would have
contributed to a previous debate about NOT using ALC, in normal use, to
set the RF output . Seems that some designers rely on the operator
setting PEP, and ALC is a last ditch before blow-up.

Cheers,
Ian ZS6BTE

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