[Elecraft] K3 NB problem

[Ralph McClintock]

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