Advanced Features
English
128
Using the PL Defeat Feature
This feature allows you to override any coded squelch (DPL or
PL) that might be preprogrammed to a channel. The radio will
also unmute to any digital activity on a digital channel.
Procedure:
Place the preprogrammed
PL Defeat
button in the PL Defeat
position. You hear any activity on the channel.
OR
The radio is muted if no activity is present.
Note:
When this feature is active, the Carrier Squelch status
indicator is displayed.
Using the Digital PTT ID Feature
This feature allows you to see the radio ID (number) of the radio
from whom you are currently receiving a transmission. This ID,
consisting up to a maximum of eight characters, can be viewed
by both the receiving radio and the dispatcher.
Your radio’s ID number is also automatically sent every time the
PTT button is pressed. This is a per-channel feature. For digital
voice transmissions, your radio’s ID is sent continuously during
the voice message.
Using the Smart PTT Feature (Conventional Only)
Smart
PTT
is a per-personality, programmable feature used in
conventional radio systems to keep radio users from talking
over other radio conversations.
When smart
PTT
is enabled in your radio, you cannot transmit
on an active channel.
If you try to transmit on an active smart-
PTT
channel, you hear
an alert tone, and the transmission is inhibited. The LED lights
up solid yellow to indicate that the channel is busy.
Three variations of smart
PTT
are available:
Mode
Description
Transmit Inhibit
on Busy Channel
with Carrier
You cannot transmit if any traffic is
detected on the channel.
Transmit Inhibit
on Busy Channel
with Wrong
Squelch Code
You cannot transmit on an active
channel with a squelch code or
(if secure-equipped) encryption key
other than your own. If the PL code is
the same as yours, the transmission is
not prevented.
APX_4000_M3.book Page 128 Friday, May 31, 2013 12:41 PM
