I am not sure I agree with you about the NR function but you obviously now
more than I do about the technical aspects. Here is what I hear:
In 1.371, the NR sounds like a squelch. The radio gets very quiet. As it
said in the manual, the higher the number you choose, the faster the
adaptation takes place but the end result is always the same - blissful,
peaceful,
soothing silence instead of what one guy called "ocean noise." I take that to
be a combination of white noise, atmospheric noise, static crashes and other
hash. With 1.371 you hear no noise (the radio sounds like it is off) but when
a signal comes on, the signal pops up. Unlike a true squelch, even a very
weak signal will be recognized as a signal and heard. That was truly
remarkable and no other radio I have heard sounded so good.
This is not the same as reducing the bandwidth. I agree reducing bandwidth
will make the signal to noise seem to improve but there is still that ocean
noise in the background.
Starting with 1.372, the NR system changed completely. Higher numbers
didn't mean faster adaptation, they meant more aggressive adaptation. The
ocean
noise never really went away like it did in 1.371 and high numbers introduced
distortion. I think with 2.0xx the distortion is terrible on CW and the NR
is useless no matter what number you pick.
If the gurus can figure out how to make the NR act like it did in 1.371, a
lot of people will be very happy.
k4ia
Craig "Buck"
Fredericksburg, Virginia USA
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