Call Procedure; Receiving And Transmitting - Icom IF1721/D Instruction Manual

Call procedure

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When your system employs tone signaling (excluding CTCSS
and DTCS), the 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.
Select the desired TX code channel, 2/5-tone code, Indi-
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vidual ID code* or Talkgroup ID code* according to your
System Operator's instructions.
• This may not be necessary depending on programming.
• Refer to pages 11–13 for selection.
*Digital mode operation only.
Push the call key (assigned to one of the dealer programma-
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ble keys; except for the Digital mode operation) or [PTT].
After transmitting, the remainder of your communication
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can be carried out in the normal fashion.
Selective calling Non-selective calling

Receiving and transmitting

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Receiving:
Push [ ] to turn the power ON.
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Push [CH Up] or [CH Down], or rotate [CH Up/Down] to
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select a channel, in sequence.
When receiving a call, adjust the audio output level to a
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comfortable listening level.
Transmitting:
Wait for the channel to become clear to avoid interference.
Take the microphone off hook.
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• 2-tone, 5-tone mute may be released. (The 'audible' condition is
selected and BUSY indicator lights green.)
• A priority channel may be selected automatically.
Wait for the channel to become clear.
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• The channel is busy when BUSY indicator lights green.
Push [CALL] when initiating a call from your side.
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• Coded audio may be heard from the transceiver, then "
pears.
• This operation may not be necessary depending on your signal-
ing system. Ask your dealer for details.
While pushing and holding [PTT], speak into the micro-
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phone at your normal voice level.
Release [PTT] to receive.
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IMPORTANT: To maximize the readability 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.
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BASIC OPERATION
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