Eric,
A great update to the K3/K3s would be a fully adjustable IF NB Width
control. The available choices now are NAR/MED/WID with 7 degrees of
level. Electric fences are wide pulse. I have observed that width vary
based on the manufacturer and the quality of the installation; read -
all terrible! This is almost exclusively due to inadequate (_non
existent_) grounds, bare wire nailed to tree trunks, wire connections
that are not really connections at all and the inevitable
brush/branch/grass growth along the wire paths. All the JA manufacturers
since the 1970s built 40lb primary station radios with noise blankers
set to eliminate automobile ignition noise! ICOM with their IC-781 in
the late 1980s added a width control along with the level control.
Besides my K2 & K3 I have an ICOM 7600. The latest iteration of it's
menu system allows adjustable NB level 0-100%, depth 1-10 (still not
sure what it does; I leave it at 4) and width adjustable 0-100. With the
NB Width control set half way at 50, I can eliminate the pulsing with a
Level setting of 50%. If I try that on 160/80 CW chasing DX the pileup
will blow the IF away. Increasing the Width to 75 and reducing the Level
to 20% the fence pulsing is close to non existent but the pile up is not
overloading the IF.
Ralph W1ZK
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