User's Manual

20
KNG User’s Manual
21
RELM/BK Radio
Mixed Mode Operation
The receiver and transmitter are capable of operating in analog wide-
band (25 kHz channel spacing), analog narrow-band (12.5 kHz channel
spacing) and APCO Project 25 Digital Mode.
Each channel’s Receive and Transmit Mode can be set independently as
follows:
Mode RX TX
Analog Receive qualiÞ ed analog signals only Transmit analog signals only
Digital Receive qualiÞ ed digital signals only Transmit digital signals only
Mixed Automatically receive qualiÞ ed analog
or digital signals
Transmit analog or digital
signal, depending on the status
of ‘TX Digital’ soft switch
Ch 1
KNG-P150 P25
171.58500 MHz
LIGT T/A MENU LCK
TXD
Ch 1
KNG-P150 P25
171.58500 MHz
LIGT T/A MENU LCK
TXA
Digital receptions and transmissions will be
indicated by illuminating the D annunciator in
addition to the RX or TX annunciator.
Analog receptions and transmissions will be
indicated by illuminating the A annunciator in
addition to the RX or TX annunciator.
Mixed Mode Talkback
If Mixed Mode Talkback is enabled, transmissions initiated while
hold time remains will be in the same mode as the received signal,
if the signal was received on the Ready to Transmit (RTX) channel.
Depending on programming, the RTX channel can be the main
channel, a held scan or priority channel if Talkback Scan is enabled,
or the Priority 1 channel if TX on PR1 is enabled. TX Mode on the
RTX channel must be set to MIXED.
Ch 1
KNG-P150 P25
171.58500 MHz
LIGT T/A MENU LCK
RXD
Press the PTT while the
RX indicator is shown
While hold time after a reception remains,
transmissions will be in the same mode as the
received signal, regardless of the status of the
TX Digital switch. As in Talkback Scan, the
RTX channel and receive annunciators will be
displayed for the duration of the timer.
Encryption Operation
The radio may optionally be conÞ gured for Secure communication on
channels operating in Digital Mode. No encryption is available for analog
channels.
Required Setup
Radios that have the DES/AES factory option for encryption must
have encryption keys loaded with an APCO Project 25 compatible key
Þ ll device such as the Motorola KVL 3000 Plus, using a BK Radio
keyloader cable. The radio can hold up to 32 AES and/or DES keys.
After loading keys in the radio, the KNG PC programming software
must be used to conÞ gure the radio’s key table and to assign default
transmit keys to each channel.
Radios that have the OTAR factory option support Over-the-Air
Rekeying of encryption keys (OTAR). The KNG PC programming
software must be used to enable OTAR and to mark the channel(s)
that will communicate with the Key Management Facility (KMF). In
addition, the radio must have key encryption keys (used only to encrypt
other keys) loaded with an APCO Project 25 compatible key Þ ll device
such as the Motorola KVL 3000 Plus, using a BK Radio keyloader
cable.
Operation
The receiver can be programmed to automatically detect both clear
and secure signals.
The transmitter selects clear or secure operation based on each
channel’s programming. Digital channels can be programmed to
always transmit encrypted, always transmit clear, or to select the
encryption mode with the TX Secure switch.
The display indicates Secure Operation as follows:
Ch 1
KNG-P150 P25
171.58500 MHz
LIGT T/A MENU LCK
TXD
In Standby Mode, if the radio will transmit in
Secure Mode when PTT is pressed, the
encrypt icon ß ashes in the display.
When receiving or transmitting an encrypted
signal, the encrypt icon ß ashes in the display.