At 03:18 04 July 2011, Fred Blair wrote:
I have one of these hand held radios and there is an "E" that is
flashing on the top, left of the screen and it keeps it from
accepting
any other key strokes. You can enter a new frequency, but you
can not
save it and lock the keyboard.

Any ideas?

Thanks,
Fred Blair
Houston, Tx

Try a re-set: Turn radio off, press and hold the volume knob and
the Monitor button while turning the radio on. This is advice from
the Vertex VXA300 manual.
Good luck
Phil