[1000mp] MP vs MkV vs K2

[1000mp@mailman.qth.net]

Rick, K2XT wrote:

"So, Earl, are you saying the 2-xtal filter is at the tail end of the IF
chain, right before the prod. detector?  If so, then it is the only ham
rig  I have ever heard of that did this.  Wes Hayward described this
technique in  his book, as a means of eliminating wideband noise that is
generated in the IF chain.  Outstanding!"
==========
I'm not familiar with Wes Hayward's book, but that's how it's done in the
K2.  The output of the 2nd xtal filter is fed into the mixer part of a
Gilbert-cell mixer/oscillator/product detector using an SA602AN (or
SA612AN) IC.  The other part of the SA602AN is the VXO xtal oscillator
(BFO).

73, de Earl, K6SE