User's Manual

When transmitting with the operating frequencies set in 222MHz -
222MHz or 902MHz - 902MHz bands, [RX disabled] will appear on
the display and reception will stop on the sub band temporarily.
107
Operating the full-duplex without using an optioned earphone
microphone or an earphone may cause howling. Please refer P.80
“Full-Duplex” setting in the set-mode and select “prohibited” parameter
to avoid this.