Hi Larry,
For the IF NB I usually use a level of 3, or 4 max, with a narrow typically for
the width. This generally works quite well for me with minimal intermod. More
aggressive thresholds and wider widths significantly increase the likelihood of
nearby strong signal intermod with IF based NBs.
As another poster mentioned, the DSP NB can be cascaded after the IF NB, or just
on its own. So trying different combinations of these may also help in your
situation.
Eric
/elecraft.com/
On 11/20/2015 3:00 PM, Larry - K1UO wrote:
I discovered the source of a “noise” I was complaining about on 80M cw this AM.
I finally noticed that it would always come on at exactly the time VK9WA said
“UP”!! and varied in intensity and duration until he answered someone..at
which time the noise was gone and S meter returned to S1!! Seems like the NB
settings on the K3 are causing IMD and phase noise from the pileup up the Band
a bit to sound like rain static and jump to a level of S5-6 on the K3 meter!
Never ran into that before with a K3... Then again, except for this new
electric fence pulse, I never needed to use the NB for anything at this
previously dead quiet location. Any ideas on what settings I should use or
try for this electric fence noise? Possibly the settings that I am using are
too aggressive and would cause this?
Regards
Larry K1UO
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