Icom IC-450 Instruction Manual - page 12
16
3
CONVENTIONAL OPERATION
3
15
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 [
]/[
] key selects
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.
D
TX code number edit
(PMR or BIIS PMR operation only)
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-
tion mode.
• Select the desired channel using [
]/[
] if necessary.
w
Push [TX Code CH Select] for 1 sec. to enter the TX code edit
mode.
e
Push [TX Code CH Select] to select the desired digit to be
edited.
r
Set the desired digit using [
]/[
]/[TX Code CH Up]/[TX
Code CH Down].
t
Push [TX Code CH Select] to set the digit. The editable digit will
move to the right automatically.
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:
q
Select the desired TX code channel via [TX Code CH Up]/[TX
Code CH Down].
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 [
]/[
]/[TX Code CH Up]/[TX
Code CH Down].
t
Push [TX Code Enter] to set the digit. The editable digit will move
to the right automatically.
y
Repeat
r
and
t
to input all allowable digits.
u
Push [Call] or [PTT] to transmit the selected TX code.
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