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Try powering the unit up while holding the Set/MHz button. I did that and it restored the display (and the rest of the radio's operation) back to normal.
The character codes are test-mode displays that correspond to frequencies (in MHz):
A0001-A0640 - 136.000-143.9875 in 12.5 KHz steps
B0001-B0400 - 144.000-147.990 in 10.0 KHz steps C0001-C2081 - 148.000-174.000 in 12.5 KHz steps
I haven't the foggiest idea why this isn't in the manual somewhere, or at least flipped back to normal by a two-key or three-key reset.
73,
k2mct
You probably need to reset the security system to get the car to start. Try taking the key out of the ignition and locking the doors using the remote. Wait about 1 minute for the alarm to finish arming itself then unlock again with the remote and try to start it. The err mesage may be gone now, but if not, you may have to get your radio repaired.
you need to take the neg (-) battery cable off to reset the radio. you can only enter the radio code 3 times incorrectly than it will lock up. i think you can pull the back up fuse from the under hood fuse box for 10 seconds and that will also reset it.
The FT-50R is an extended receive, but dual band (UHF & VHF) amateur transceiver. It is capable of transmitting between approximately 144Mhz - 148Mhz VHF and 430Mhz - 450Mhz UHF.
Typically, the radio will provide an audible warning whenever attempting to operate outside of its intended range(s). The manual has a section on maximizing battery life, and can be downloaded below:
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