[Elecraft] K160m/2nd rx & KNB2 problem(s)

[rich a.]

Hello Elecrafters,

Yesterday I posted problems about a "low battery" and no voltage
displayed and got several fast responses with the fix (switch S1
inavertently put in wrong position).

This one may be a little tougher but here goes.
A few days ago I installed the K160m/2nd rx ant. board and it checked
out OK. I could get signals on 160 and turn the 2nd ant on and off on
all bands.

Today I installed the KNB2 noise blanker and the 160m/2nd rx functions
disappeared. Cycling the bandswitch buttons downwards or upwards skips
from 80m to 10m, same as before the board was installed. And going to
menu and trying to turn on the 2nd ant doesn't work anymore either.

I didn't find this particular problem mentioned in the manual's
troubleshooting section and see nothing about this anywhere in the
builder's resources on the Elecraft web site.

Any advice and/or ideas about these problems will (as usual) be
appreciated. Thanks.

Rich  KB2CPE