[Elecraft] K3 NB

[Don Wilhelm]

The gentleman who was having problems has found the cause.  He swapped 
the KNB3 from the sub to the mainRX.  In other words, the KNB3 in his 
mainRX was not functioning properly.

Yes, the NB does not do too much for power line noise - it works well on 
impulse type noise like automobile ignition noise and most types of 
electric fence noise.

In other words, use NR for more constant type noises like powerline buzz.

73,
Don W3FPR

On 5/17/2016 10:25 AM, Graham Kimbell wrote:
> I'm really surprised by all these negative comments about K3 NB.  Mine 
> has been very effective on electric fences (I have one!) and power 
> line noise.
>