User's Manual

20
KNG User’s Manual
21
RELM/BK Radio
Transmit Encryption Key Selection
The radio can hold up to 32 DES or AES encryption keys. Each
channel is assigned a default key for transmit. The key can be locked
to the channel, or if programming allows, a transmit key other than the
default key can be selected from the radio’s Key Pick List. If a key
is selected from the pick list, it will be used during transmit on every
channel that allows selectable keys.
Follow the steps below to select the encryption key.
To use the channels programmed key:
User Keys

Default
Select-> UKEY1
ESC ▲ ▼ ENTER
1. Press the button programmed for the Key
Pick List (UKEY) or select "TX KEYS' from
the programmed menu.
2. Use the up/down buttons to highlight
'Default'.
3. Press the 'ENTER' button to select the
key.
4. Hold the 'ESC' button to return to normal
operation.
To select a key from the programmed list:
User Keys
Default
Select-> UKEY1
ESC ▲ ▼ ENTER
Select Key
Key 1
Key 2
Key 3
ESC ▲ ▼ ENTER
3
2
1
1. Press the button programmed for the Key
Pick List (UKEY) or select "TX KEYS' from
the programmed menu.
2. Use the up/down buttons to highlight
'Select'.
3. Press the 'ENTER' button to open the
key menu.
4. Use the up/down buttons to highlight the
desired key. Or, using the keypad, press the
number of the desired key.
5. Press the 'ENTER' button to select the
key.
6. Hold the 'ESC' button to return to normal
operation.
If a key is selected that has not been programmed, the radio will not
Encryption Operation
The radio may optionally be confi 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
fi 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 confi 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 fi 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 - P25
171.58500 MHz
MON T/A MENU TXD
TXD
In Standby Mode, if the radio will transmit in
Secure Mode when PTT is pressed, the
encrypt icon fl ashes in the display.
When receiving or transmitting an encrypted
signal, the encrypt icon fl ashes in the display.