[Elecraft] K3 noise blanker behavior with sub receiver

[Charles Johnson]

I have noticed some strange behavior in the K3 regarding the noise 
blanker (NB) and the sub receiver.  If I have the sub receiver turned 
off and am listening to the main receiver with the noise blanker turned 
on, then enable the sub receiver, the noise blanker is turned off in the 
main receiver. I then have to turn it back on for the main receiver, 
then enter B SET and turn it on for the sub receiver. The CONFIG:VFO IND 
has to be enabled to even allow you to turn on the sub receiver's noise 
blanker. If CONFIG:VFO IND is not enabled, I can not find a way to turn 
on the sub receiver's noise blanker. The noise reduction (NR) on the 
other hand, works completely differently. The settings are maintained as 
you turn the sub receiver on and off, and you can turn on the noise 
reduction in the sub receiver by turning it on for the main receiver. 
Seems to me the two functions should work the same way. I use the noise 
blanker a lot. It works very well on my power line noise, but using it 
with the sub receiver is not very straight forward. What am I missing 
here? Thanks, Charlie, K4ZRJ