[Elecraft] K3 - using the Manual NTCH

[Bill W2BLC]

I just noticed that when the Manual NTCH is engaged and the frequency of 
the notch is set using VFO B - the main VFO is locked. You cannot change 
frequency with VFO A, however the frequency can be controlled via HRD. 
This lock can be toggled off by pressing the A/B button.

Is this a feature? Anomaly? Or, just one of those odd little things that 
can happen when something is designed to be foolproof - and 
underestimating the ingenuity a complete fool.

Bill Clarke K-Line