User's Manual

P25 - SRM9022 RADIO – OPERATING INSTRUCTIONS

If “CALL” is selected, pressing “OK” sets the radio to individual calling mode with the ID of

the stored call. A subsequent PTT within the configured time interval will send an individual

call to the ID of the stored call.

5.6 T

RANSMITTING

To avoid interfering with other users of the channel, listen first, or check that the “speaker”

icon is not present, to ensure no transmissions are occurring.

If the speaker icon is shown, there are transmissions present on the channel and the user

should not transmit. The radio may be programmed to prevent transmission on a busy

channel if required.

Hold the microphone a few centimetres from the mouth, press the “Press to talk” (PTT)

switch and note that the TX-LED is RED. Wait for the grant tone, and then speak clearly

across the face of the microphone in a normal conversational manner.

In most systems it is important to wait a short time between pressing PTT and commencing

to speak. This ensures that the path is properly established and avoids lost or distorted

speech.

While transmitting, the vertical bars on the left hand side will indicate the transmit power level

programmed for that channel. An L character below the bars indicates low power and an H

character indicates high power.

Use the correct operating procedure and keep transmissions short.

Release the PTT switch as soon as the message is finished.

The talk group for a transmission is usually associated with a channel selection. A talk group

will address all others that have the same TGID selected.

While on a P25 Channel, the transmission will be P25 digital. For an Analogue channel, the

transmission will be Analogue FM

Note: A Transmit Limit Timer may be setup that limits a continuous transmission on a

channel. The last 10 seconds before the timer expires may be accompanied by warning

beeps.

5.7 SCAN/VOTE FUNCTIONS

The Scan/Vote Function allows the sequential searching of up to 16 channels if the selected

zone channel is programmed as a Scan channel, and 15 channels if the selected zone

channel is programmed as a Vote channel, for a valid signal (Carrier + CTCSS / DCS tone

for Analogue FM or Network Access Code for P25). When found, the radio will stop on that

channel until the signal disappears again.