In most systems it is important to wait a short time between pressing the PTT and
commencing to speak. This ensures that the path is properly established and avoids
lost, truncated 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 as soon as you finish speaking your message.
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 tones.
6.7. 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 NAC for P25). When found, the radio will stop on
that channel until the signal disappears again.
To activate Scanning, select a channel that has been programmed as a Scan channel.
Once selected, the scanning will either start automatically, if programmed, or the
programmed scan function key will have to be pressed. (FPP configurable).
If a selected zone channel is programmed as a Vote channel, the voting will start
automatically without any other user intervention.
While listening on the channel, the user is able to PTT on that channel. After the signal
disappears, the radio will remain listening on the channel for a short time (FPP
configurable, typically 3 secs) before resuming scanning or voting.
If a Priority Channel is assigned to Scan mode, the radio will interleave a check of this
channel between each normal Scan channel.
Doc Number: TNM-U-E-0055 ISSUE 4.0 Page 65
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