Icom IC-F70 / F80 Instruction Manual - Page 18

3 BASIC OPERATION D Transmitting notes • Transmit inhibit function The transceiver has several inhibit functions which restrict transmission under the following conditions: - The channel is in mute condition ('Inaudible' condition; " " does not appear.) - The channel is busy. - Un-matched (or matched) CTCSS is received. (Depending on the pre-setting.) - Un-matched (or matched) NAC is received.* (Depending on the pre-setting.) - The selected channel is a 'receive only' channel. *Digital mode operation only. • Time-out timer After continuous transmission for the pre-programmed time period, the time-out timer is activated, causing the transceiver to stop transmitting. • Penalty timer Once the time-out timer is activated, transmission is further inhibited for a period determined by the penalty timer. D TX code channel selection If the transceiver has [TX Code CH Select] assigned to it, the indication can be toggled between the operating channel number (or name) and TX code channel number (or name). When the TX code channel number (or name) is displayed, [CH Up] or [CH Down] selects the TX code channel. USING [TX CODE CH SELECT] KEY: q Push [TX Code CH Select]-a TX code channel number (or name) appears. w Push [CH Up] or [CH Down] to select the desired TX code channel. e Push [Call] (or [PTT] during BIIS operation) to transmit the selected TX code. USING [TX CODE CH UP]/[TX CODE CH DOWN] KEY: If the transceiver has a [TX Code CH Up] or [TX Code CH Down] key assignment, the programmed TX code channel can be selected directly when pushed. NOTE for PMR or BIIS PMR operation: • The LCD indication does not change when the operating channel number (or name) is displayed. (Depending on the pre-setting) • To check the selected TX code, push [TX Code CH Select]. 14