Icom IC-F3161D Instruction Manual - Page 18

3 BASIC OPERATION ■ Call procedure ■ Receiving and transmitting When your system employs tone signalling (excluding CTCSS and DTCS), this call procedure may be necessary prior to voice transmission. The tone signalling employed may be a selective calling system which allows you to call specific station(s) only and prevent unwanted stations from contacting you. q Select the desired TX code channel or 2/5-Tone code according to your System Operator's instructions. • This may not be necessary depending on programming. • Refer to pages 14 or 15 for selection. w Push [Call] (assigned to one of the dealer programmable keys). e After transmitting, the remainder of your communication can be carried out in the normal fashion. Selective calling Non-selective calling CAUTION: Transmitting without an antenna may damage the transceiver. See page 1 for accessory attachments. Receiving: q Rotate [VOL] to turn the power ON. w P ush [CH Up] or [CH Down], or rotate [ROTARY SELEC- TOR]* to select the conventional system channel, in sequence. *Depending on the pre-setting. e W hen receiving a call, adjust the audio output level to a comfortable listening level. NOTE: When a matched RX code signal is received, audio from the microphone is automatically transmitted for a specified time period.* * Depending on the presetting. Ask your dealer for details. Transmitting: Wait for the channel to become clear to avoid interference. q W hile pushing and holding [PTT], speak into the micro- phone at a normal voice level. • When a tone signalling system is used, the call procedure de- scribed at the previous page may be necessary. w Release [PTT] to return to receive. IMPORTANT: To maximize the audio quality of your signal; 1. Pause briefly after pushing [PTT]. 2. Hold the microphone 5 to 10 cm (2 to 4 inches) from your mouth, then speak into the microphone at a normal voice level. 13