Don:
You might wish to consider my Z10000 buffer amplifier design. It's
usually attached ahead of the selective stages as it's intended purpose
is to provide an isolated IF signal sample for the Z90/Z91 panadapter.
However, it could be attached at a different point in the IF chain. You
can read about it at www.cliftonlaboratories.com
Some degree of caution has to be exercised in making these samples, as
there are lots of signals floating around inside the K2 and one wants to
keep them out of places they don't belong, so cable routing, lead
length, etc. is important. The only configuration that I have tested
involves a wideband sample at the output of the 2N5109 post-mixer amplifier.
Jack K8ZOA
www.cliftonlaboratories.com
Don wrote:
I have often wished I could monitor the output of the IF of my K2. I
have often done this with a small oscilloscope when using my
boatanchor receivers and have found it very handy for analyzing
received CW and SSB signals. I know I could hack into the K2 and find
a way to bring out the IF without disturbing receiver function too
badly but hope somebody out in Elecraftland can save me some of the
painful learning experiences I would no doubt encounter if inventing
it all from scratch.
Don K7FJ
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