Radio has unpredictable behavior after tuning and TXing on unintended frequencies

[xawen]

when F-Lock is disabled, there are few restrictions on what frequencies the radio will attempt to tune. The software will not prevent tuning frequencies that the hardware doesn't like.

Marcos has reported that after testing certain low or high frequencies, the radio began acting unpredictably even after a reboot. Based on testing, he recommends limiting the radio to the following even with F-Lock disabled:

RX: 18-620,840-1300
TX:136-620