I've completed a detailed analysis with measured data using a Softrock
Lite 6.2, K2 IF version as a panadapter.
The details are at a new web page:
http://www.cliftonlaboratories.com/using_softrock_as_a_panadapter_for_the_k2.htm
The measured data shows that the Z10000 buffer amplifier is quite
efficient at handling the Softrock's LO leakage and also that setting
the Z10000 buffer amplifier to provide around net 0 dB gain (1 uV into
the antenna port at, say 7 MHz, corresponds to 1 uV out of the Z10000 IF
sample port at 4915 KHz) is about right with the Softrock. Some may
prefer a slight bit more gain, which may be achieved by a different gain
setting resistor in the Z10000. The need for additional gain may be
more important for VHF/UHF work, or quiet band conditions. In my tests
with both lab gear and listening on 40 meters, I did not find
additional gain necessary.
Jack K8ZOA
www.cliftonlaboratories.com
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