User's Manual

ManualsBrandsRELM WIRELESS CORP. - BK RADIO ManualsElectronicsUHF LAND MOBILE RADIO

KNG User’s Manual

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 qualiﬁ ed analog signals only Transmit analog signals only

Digital Receive qualiﬁ ed digital signals only Transmit digital signals only

Mixed Automatically receive qualiﬁ ed analog

or digital signals

Transmit analog or digital

signal, depending on the status

of ‘TX Digital’ soft switch

Ch 1

KNG - P25

171.58500 MHz

MON T/A MENU TXD

TXD

Ch 1

KNG - P25

171.58500 MHz

MON T/A MENU TXD

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 - P25

171.58500 MHz

MON T/A MENU TXD

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.

The digital equivalent of carrier squelch is achieved by programming

the receive NAC = 3966($F7E hex). The radio will unmute when a

digital signal with any NAC is detected. The 3966 ($F7E hex) NAC is

reserved for receivers and is not allowed as a transmit NAC.

Selective squelch is used for processing Group Calls and Unit-to-

Unit Calls. TGIDs are assigned on a per-channel basis. Users can

be separated into Talk Groups with each group having its own TGID.

Then, on channels programmed for Selective squelch, the incoming

signal’s NAC and TGID must match the channels programmed

receive NAC and TGID for the radio to unmute. The default TGID

is 1.

The TGID value 65535 ($FFFF hex) is used to effect an “All Call”.

If the radio receives a signal with a matching NAC and the TGID =

65535 ($FFFF hex), it will unmute. Also, if the radio’s programmed

TGID is 65535 ($FFFF hex), it will open on any signal with a matching

NAC, ignoring the incoming TGID. A TGID = 0 means “no one”. If

the radio is programmed with the TGID = 0, it will accept incoming

group calls containing the “All Call” TGID, and correctly addressed

Unit-to-Unit calls only.

Code Guard Receive

Analog channels programmed with a receive code guard will be heard

only when the proper frequency and Code Guard value is received.

Analog and mixed mode receive channels will also unmute when the

radio is in monitor mode.

Code Guard Transmit

SCAN

PRI

VOL

Busy Channel/Transmit

Indicator

Ch 1

KNG - P25

171.58500 MHz

MON T/A MENU TXD

The frequency must be clear prior to transmitting

on a Code Guarded channel. If the LED Indicator

is yellow do not transmit. Busy Channel Lockout

can be programmed to disallow transmitting while

a channel is busy.

1. Press the PTT switch. When the transmitter is

on, the LED Indicator glows red and TX 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.