On Oct 12, 4:45*pm, Phillip Kyle
wrote:
I regularly experience the same problem when tuning, and I put it down to
changing the frequency whilst the channel was receiving a transmission,
but I haven’t confirmed this is the case.

And another problem…. After 4 years of private use since new, my AR4201
developed a low voltage fault which showed up when attempting to transmit,
(flashing display).

Philip,

Our problem with the tuning may be related to the poor power supply
you had. My other symptom is my Cambridge LNAV was not working
properly and the technician I spoke with there said it sounded like a
poor power connection. Turns out one of the relays in my ship is
faulty so both of our problems could be due to a poor power
connection. Once I get the relay replaced, I'll see.

Martin