携帯電話 Digitalk SP2302AAのPDF 取扱説明書および操作説明書をオンラインで閲覧またはダウンロードできます。Digitalk SP2302AA 4 ページ。 Long range communicator

a. Except in an emergency, the unit must not be operated on
channels 5 and 35, including sub-channels.
b. No voice transmissions are permitted on channels 22 and 23.
c. Channel 11 is the customary calling channel for establishing
communication.
d. Channel 40 is the customary road vehicle channel.
e. Before selecting a channel for transmitting, always listen on it
and ensure it is not already being used. Always avoid
selecting a busy channel. When the unit keeps on receiving
signal from unknown party, the icon RX will be displayed.