Steve,
A calibrated noise source is not necessary for aligning the K2 filters -
most any source of noise will do. I have even heard that some folks were
successful with a bit of wire placed close to a lighted flourescent lamp.
If you have other needs for a calibrated noise source, you can also use it
for the K2 alignment, but that is much more than is needed for aligning the
K2 filters.
73,
Don W3FPR
----- Original Message -----
I was wondering if anyone on the reflector had tried building the
"Calibrated Noise Source" described starting on Page 25.27 of the 2005 ARRL
Handbook. If so, has anyone tried aligning a K2 with it?
The Handbook noise source looks like it would be more expensive and harder
to build than the Elecraft Ngen. Presumably the flat spectrum and precise
calibration of the Handbook generator make it better for doing noise
figure measurements.
Does anyone have some thoughts on the tradeoffs between the two
generators?
73,
Steve Kercel
AA4AK
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