Icom F3400D / F4400D Operation Guide - Page 38

Receiving and transmitting, ◇ Transmitting notes

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Previous view 3 BASIC OPERATION Receiving and transmitting CAUTION: DO NOT transmit without an antenna. It may damage the transceiver. See pages 1-3 and 2-6 for accessory attachments. Receiving: 1. Turn ON the transceiver. (p. 3-2) 2. Select a channel. (p. 3-4) 3. When receiving a call, rotate [VOL] to adjust the audio output level to a comfortable listening level. NOTE: Depending on the presetting, the transceiver may automatically transmit the microphone audio for the preset time period when a matching signal is received. (Auto TX function) Transmitting: Wait for the channel to become clear to avoid interference. 1. While holding down [PTT], speak at your normal voice level. ••When a tone signaling system is used, the call procedure described on page 3-9 may be necessary. 2. Release [PTT] to return to receive. 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 at your normal voice level. DDTransmitting notes Transmit inhibit function The transceiver has several inhibit functions which restrict transmission under the following conditions: • The channel is in the Inaudible mode (" ": Audible icon does not appear.) • The channel is busy. However, depending on the presetting, you can transmit when a call is received that includes an non-matching (or matching) CTCSS (DTCS), RAN (Radio Access Number), Individual ID, or Group ID. • The selected channel is a 'receive only' channel. Time-out timer If continuous transmission exceeds the preset timeout timer limit, the transmission is cut off. Penalty timer After the transmission is cut off by the Time-Out Timer, transmission is further inhibited for the preset penalty timer period. 3-8

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3
BASIC OPERATION
3-8
Receiving and transmitting
CAUTION:
DO NOT
transmit without an antenna. It
may damage the transceiver. See pages 1-3 and 2-6
for accessory attachments.
Receiving:
1.
Turn ON the transceiver. (p. 3-2)
2.
Select a channel. (p. 3-4)
3.
When receiving a call, rotate [VOL] to adjust the
audio output level to a comfortable listening level.
NOTE:
Depending on the presetting, the transceiver
may automatically transmit the microphone audio
for the preset time period when a matching signal is
received. (Auto TX function)
Transmitting:
Wait for the channel to become clear to avoid
interference.
1.
While holding down [PTT], speak at your normal
voice level.
•
When a tone signaling system is used, the call
procedure described on page 3-9 may be necessary.
2.
Release [PTT] to return to receive.
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 at your normal voice
level.
D
Transmitting notes
Transmit inhibit function
The transceiver has several inhibit functions which
restrict transmission under the following conditions:
• The channel is in the Inaudible mode (“
”: Audible
icon does not appear.)
• The channel is busy. However, depending on the
presetting, you can transmit when a call is received
that includes an non-matching (or matching) CTCSS
(DTCS), RAN (Radio Access Number), Individual ID,
or Group ID.
• The selected channel is a ‘receive only’ channel.
Time-out timer
If continuous transmission exceeds the preset time-
out timer limit, the transmission is cut off.
Penalty timer
After the transmission is cut off by the Time-Out Timer,
transmission is further inhibited for the preset penalty
timer period.