Suppose we provide a menu option that, when engaged, results in this behavior:

- If you're NOT in SPLIT: keying the rig shows "NON.SPLT" on VFO B. (A is TX in 
this case.)

- If you ARE in SPLIT: keying the rig shows "SPLIT" on VFO A. (B is TX in this 
case.)

So, during keying in either case, the TX frequency is still displayed (you need 
to know that), but the RX display is used to provide a warning.

The time constant for these displayed messages would coincide with the change 
in metering from RX to TX. Thus the "NON.SPLT" or "SPLIT" would come on when 
you key, and stay on for at least 300 ms, the timer being retriggered each time 
you key. To get an idea of what that would look like, just watch the RX and TX 
metering scales as you key the radio.

It's not a "flashing" message, per se, but if you were calling a DX station on 
the order of every few seconds, the message would come and go to get your 
attention.

It has the advantage of being quite obvious since it changes the entire 
contents of one of the VFO displays, and both are very close to the VFO A knob, 
where the action is.

Wayne
N6KR

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