BK Radio P150, Service Manual

Page: 48 / 264

BK Radio Page 2-33
installation and programming
receive nac
This setting only applies to Digital and Mixed Mode channels.
Network Access Codes (NACs) provide the digital equivalent of analog subaudible signaling (CTCSS/
CDCSS or Code Guard) allowing a group of radios to be selectively called within a system. NACs can be
viewed in decimal or hexadecimal format (a leading $ indicates HEX). Set the default viewing format in
the Options Menu.
Each Digital or Mixed Mode channel must be 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 digital equivalent of carrier squelch is achieved by programming the receive NAC = $F7E (3966
Decimal); the radio will unmute when a digital signal with any NAC is detected.
valid nac values
Decimal Hexadecimal
Range
0-4095 $000-$FFF
Default
0659 $293
Carrier/Noise Squelch
3966 $F7E
NOTE: A Network Access Code has no effect on channels programmed as analog only.
transmit frequency
Enter a Valid transmit frequency. Different frequencies can be entered for receive and transmit.
NOTE: If the Repeater Talkaround function is turned on, the radio will transmit on a channel’s programmed
receiver frequency regargless of the programmed transmit frequency. (See Repater Talkaround under
Global Settings for details.)
Entering a zero for the Transmit Frequency when a valid Receive Frequency has been programmed will
make the channel a Receive-Only channel (the transmitter will be locked OFF).
Channels programmed with Transmit frequencies must also contain a Receive frequency.
transmit mode
Each channel can be programmed for Analog-only operation, Digital-only operation, or Mixed Mode
(Analog and Digital) operation. Selecting Mixed Mode for transmit allows the radio to transmit both digital
and analog signals.