3 CONVENTIONAL OPERATION

DTransmitting 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.

DTX 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:

qPush [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.

CONVENTIONAL OPERATION 3

DTX 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.

3

 

TO EDIT A TX CODE VIA [TX CODE CH SELECT] KEY:

qPush [TX Code CH Select] to enter the TX code channel selec-

tion mode.

Select the desired channel using [ ]/[] if necessary.

wPush [TX Code CH Select] for 1 sec. to enter the TX code edit

mode.

ePush [TX Code CH Select] to select the desired digit to be

edited.

rSet the desired digit using []/[]/[TX Code CH Up]/[TX Code CH Down].

tPush [TX Code CH Select] to set the digit. The editable digit will

move to the right automatically.

yRepeat r and t to input all allowable digits.

uPush [Call] or [PTT] to transmit the selected TX code.

TO EDIT A TX CODE VIA [TX CODE ENTER] KEY:

qSelect the desired TX code channel via [TX Code CH Up]/[TX Code CH Down].

wPush [TX Code Enter] to enter the TX code edit mode.

ePush [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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Icom IC-450, IC-460 instruction manual Transmitting notes, TX code channel selection