[Elecraft] Question about KNB2 Noise Blanker (Gain reduction in NB2 posit...

[G3VVT at aol.com]

Hi Ken,
 
This effect of gain reduction when NB2 is selected does not happen on  my K2.
 
A question is are you receiving large doses of noise that the  blanker is 
removing as the operation of a noise blankers is to cut out the  affected section?
If the noise is severe enough this can result in distortion and  reduction of 
signal.
 
You can check this by disconnecting the antenna and observing a signal from  
an RF generator under the same test.
 
Took quite a time before I could even say my NB was even working. Only  works 
with the right kind of noise such as ignition interference. Shades of  
British Rail and their problems with the wrong kind of leaves on the railway  lines!
 
Regards,
Bob, G3VVT
K2 #4168