When I first completed the K2 with the noise blanker option and ran some
tests, I also expected to hear more of a difference in backround noise
reduction. Unless it is repetitive pulse noise the blanker has no audible
effect which is good in some respects compared to other receivers like
the Icom 706 noise blanker which can needlessly distort the reception of
strong signals.
The blanker is very effective in eliminating lamp dimmer noise, and once
I heard the difference it put my mind to rest that the circut which I
assembled was working properly.
GL 73,
Bob Johansen WB2SRF Staten Island, NY USA
K2 S/N 5622
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