[Elecraft] K3 Notch

[Tom W8JI]

I wonder how the other radios like an IC-7600 can get away 
with
putting it within the agc loop.>>

Maybe because nobody notices something else that goes bad.

Life is often full of compromises. If we give up something 
like close-spaced dynamic range or better AGC performance, 
it can sometimes allow us to do the more obscure things we 
would use 1% of the time. :-)

Sometimes engineers overlook something they could have done, 
and sometimes they don't want to compromise something most 
people would find more important.

73 Tom