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Date: Mon, 14 Oct 2002 17:12:49 -0500
From: "George, W5YR" <w5yr at att.net>
Organization: AT&T WorldNet Service
To: rondec at easystreet.com
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Re:REV operation

-- snip --

BTW, I have completed my mod for using the K2 as a down-converter feeding
IF signal to the PRO. Works like a million $$$ with no discernible ill
effects on K2 performance. 

I have two IF outputs from the K2: the output of the Post-Mixer amplifier
at a nominal 4.915 MHz and the output of the AGC mixer output amp at a
nominal 156 KHz. With the first, I have all the PRO features including the
Spectrum Scope, but according to Eric I am losing some front-end
performance. Using the AGC tap point, I maintain the K2 front-end integrity
and still have access to all PRO functions except the Spectrum Scope. 

I find that I tend to use the IF tap point for SSB and the AGC tap for CW.

It really adds to the capabilities of the K2 to have IF DSP filters,
automatic and manual notch filters, DSP noise reduction, etc. etc. The
entire mod requires three components plus two lengths of RG-174 and two BNC
connectors. I'll try to put together a detailed writeup sometime this week
for others who might want to evaluate this approach. Of course, this is all
for home station use. For field work, the K2 performs exactly as before.

BTW, in QSO with Eric on 18.132, he "blessed" this mod and encouraged me to
put it on the list as well as to continue doing "interesting things" with
the K2.

73/72, George    
Amateur Radio W5YR -  the Yellow Rose of Texas
In the 57th year and it just keeps getting better!
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
K2 #489      Icom IC-765 #2349     Icom IC-756 PRO  #2121

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