[Elecraft] Subreceiver notch filter

[Jim Miller KG0KP]

K3 #1442 - Running 3.06 2.12 - these symptoms - updated to 3.11 2.15 - no change.

Are NR and notch available on the sub receiver at this time?  I turn on sub and go to bset and press notch, it jumps out of Bset and does not turn it on unless I am missing something.  NB works fine but NR and Notch cause the symptom.

Last night while working psk on 20 meters and listening to an SSB QSO on 40 meters on the sub receiver somebody didn't seem to be able to get his radio tuned and for several minutes kept sending tone that I was unable to kill by setting notch on my second receiver.  

How do I do it?

Tnx es 73, de Jim KG0KP