D Transmitting Notes; D Tx Code Channel Selection - Icom IC-450 Instruction Manual

Vhf, uhf transceiver
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3
CONVENTIONAL OPERATION

D Transmitting notes

• Transmit inhibit function
The transceiver has several inhibit functions which restrict trans-
mission under the following conditions:
- The channel is in mute condition ('Inaudible' condition; "
does not appear).
- Channel is busy.
- Un-matched (or matched) CTCSS is received.
- The selected channel is a 'receive only' channel.
• 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, indica-
tion 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, the [
the TX code channel.
TO SELECT A TX CHANNEL:
q Push [TX Code CH Select]— a TX code channel appears.
w Push [
]/[
] to select the desired TX code channel.
e Push [Call] (or [PTT] during MSK operation) to transmit the se-
lected TX code.
r Push [TX Code CH Select] again to return to the operating chan-
nel number indication.
FOR TX CODE CHANNEL TYPE:
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.
15
D TX code number edit
If the transceiver has [TX Code CH Select] or [TX Code Enter] as-
signed to it, TX code contents can be edited within the allowable
digits.
"
TO EDIT A TX CODE VIA [TX CODE CH SELECT] KEY:
q Push [TX Code CH Select] to enter the TX code channel selec-
w Push [TX Code CH Select] for 1 sec. to enter the TX code edit
e Push [TX Code CH Select] to select the desired digit to be
r Set the desired digit using [
t Push [TX Code CH Select] to set the digit. The editable digit will
y Repeat r and t to input all allowable digits.
u Push [Call] or [PTT] to transmit the selected TX code.
TO EDIT A TX CODE VIA [TX CODE ENTER] KEY:
]/[
] key selects
q Select the desired TX code channel via [TX Code CH Up]/[TX
w Push [TX Code Enter] to enter the TX code edit mode.
e Push [TX Code Enter] to select the desired digit to be edited.
r Set the desired digit using [
t Push [TX Code Enter] to set the digit. The editable digit will move
y Repeat r and t to input all allowable digits.
u Push [Call] or [PTT] to transmit the selected TX code.
(PMR or BIIS PMR operation only)
tion mode.
• Select the desired channel using [
mode.
edited.
Code CH Down].
move to the right automatically.
Code CH Down].
Code CH Down].
to the right automatically.
3
CONVENTIONAL OPERATION
]/[
] if necessary.
]/[
]/[TX Code CH Up]/[TX
]/[
]/[TX Code CH Up]/[TX
3
16

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