User's Manual

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KNG User’s Manual
17
RELM/BK Radio
channel is busy (see Busy Channel Lockout). Select an authorized
transmit channel.
NOTE: When using a channel programmed for mixed mode transmit
the signal will be transmitted in the mode selected by the TX Digital
selection. Or if programmed for Mixed Mode Talkback, the radio will
transmit in the mode of the last received channel while the “RX” icon
is displayed. (See Mixed Mode Operation.)
Code Guard Operation
Analog Squelch Control
Sub-audible signaling (CTCSS/CDCSS) is used to allow a group of
radios to be selectively called in an analog system. Programming the
receive code guard equal to zero allows for Carrier Squelch operation,
where the radio will unmute whenever a carrier is detected regardless
of the transmitted Code Guard.
APCO Project 25 Squelch Control
Network Access Codes (NACs) provide the digital equivalent of analog
sub-audible signaling (CTCSS/CDCSS) allowing a group of radios to
be selectively called within a system.
Users in the same area (using the same NAC) can be further divided
into Talk Groups, with each group having its own Talk Group ID
(TGID). Group Calls are made by designating both the users’ NAC
and TGID.
Each radio also has an individual P25 unit ID. A Unit-to-Unit call
contains the addressee’s NAC, and uses the addressee’s P25 unit ID
instead of the TGID.
When operating in Digital Mode, each channel can be programmed to
use either Normal squelch or Selective squelch.
Normal squelch is used to mimic analog operation. Signals are
only qualifi ed with the programmed NAC. TGIDs and P25 Unit IDs
are ignored. Each digital channel is programmed with a receive NAC
and a transmit NAC. When an incoming signal’s NAC matches the
channel’s programmed receive NAC, the radio unmutes. The default
NAC is 0659 ($293 hex).
Basic Radio Operation
Receive
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SCAN
PRI
VOL
1. Turn power on by turning the Volume knob
clockwise. A beep sounds, indicating the radio is
operational. The LCD display shows the
programmed information of the currently selected
channel. Programmable channel information
options include number, label, frequency and
other channel information.
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SCAN
PRI
VOL
2. Select a channel by rotating the Channel
Selector knob.
3. Open the squelch to adjust the volume
(Open squelch can be achieved by selecting the
programmed Monitor function.)
Ch 1
KNG - P25
171.58500 MHz
BKLT T/A MENU TXD
RXD
When a signal is received, the unprogrammable
top line of the display indicates the current
channel’s operating mode.
RXA = analog, RXD = digital.
Transmit
Ch 1
KNG - P25
171.58500 MHz
BKLT T/A MENU TXD
TXD
KNG
ABC
DEF
GHI
JKL
MNO
PQRS
TUV
WXYZ
*
#
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0
BK RADIO
Microphone
PTT
1. Press the PTT (Push-To-Talk) switch. When
the radio is transmitting the indicator LED glows
red and TXD or TXA appears in the display.
2. Talk in a normal voice with the microphone
one to two inches from your mouth.
3. Release the PTT switch to stop transmitting.
If the length of your message exceeds the
programmed Time-Out Timer setting, the
transmitter automatically shuts off and a tone
sounds. To continue transmission, release the
PTT switch, then press it again and continue
talking.
If the Transmit Indicator does not glow and a tone
sounds, you are on a receive-only channel or the