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4                                                                                            BK Radio

 

INTRODUCTION 

This section contains information concerning the operational 

procedures for BK Radio DMH APCO Project 25 digital mobile radios.  

To meet backwards compatibility as defined by the APCO Project 25 

standard, the DMH digital mobile radio provides users the ability to 

interoperate with narrow or wide band analog channels as well as 

digital systems.  Please take a moment to read the information in this 

manual so you can get optimum performance from your new radio. 

FCC REQUIREMENTS 

Your radio must be properly licensed by the Federal Communications 

Commission prior to use. Your BK Radio dealer can assist you in 

meeting these requirements. Your dealer will program each radio with 

your authorized frequencies, signaling codes, etc., and will be there to 

meet your communications needs as your system expands. 

SAFETY PRECAUTIONS

 

•  Do not operate the transmitter in close proximity 

to blasting caps. 

• Do not operate the radio in an explosive 

atmosphere (petroleum fuels, solvents, dust, 

etc.). 

 

Do not operate the transmitter if a person 

outside the vehicle is less than three feet from 

the antenna or touching the antenna. 

 

 

DMH Owner’s Manual                                                                        37             

 DEFINITIONS AND ACRONYMS

 

ANI Automatic 

Numeric 

Identification 

CG Channel 

Guard 

CLR Clear 

Channel Guard 

A subaudible tone, a code (analog) or a Network Access Code 
(digital) for selective calling and receiving. 

DTMF 

Dual Tone Multiple Frequency 

DTMF Tones 

Tones that sound like those used by a standard push-button 
telephone. 

ENT Enter 

FCN Function 

GRP Group 

ID 

Digital reception/transmission – ‘

I

t’s 

D

igital.” 

Individual 
Personality 

The information programmed with a PC on both a global and by-
channel basis that tells the radio exactly how to operate. 

Mixed Mode 

Allows Analog and Digital operation on the same channel 

NAC 

Network Access Code for digital channel. 

PR Priority 

Channel 

PRG Programming 

mode 

PRI Priority 

 

PTT Push-To-Talk 

RTA 

Repeater Talk Around 

RTX Channel 

Ready-to-Transmit Channel 

RX Receive 

SCN Scan 

SQL Squelch 

Squelch 

A control that eliminates background noise. 

Talkback Scan 

When scanning, if a signal is present, the scan will stop and you 
will hear the signal. If you then push the PTT switch to talk back 
to the person, you are in Talkback Scan Mode. 

TGID 

Talk Group ID 

Time-Out Timer 

A feature that limits the duration of calls. 

TX Transmit 

Содержание DMH

Страница 1: ...io Controls 8 Basic Operation 8 Channel Guard Operation 9 Mixed Mode Operation 12 Secure Operation 13 Channel Groups 15 Programmable Push Buttons Microphone FCN Key Menu 15 Scan Operation 20 Priority Scan 22 Unit To Unit Call 26 Emergency Call 30 User Selected Channel Guard 31 Other Operational Features 32 Alphanumeric Display 35 Definitions And Acronyms 37 Service Inside Back Cover ...

Страница 2: ...the vehicle is less than three feet from the antenna or touching the antenna DMH Owner s Manual 37 DEFINITIONS AND ACRONYMS ANI Automatic Numeric Identification CG Channel Guard CLR Clear Channel Guard A subaudible tone a code analog or a Network Access Code digital for selective calling and receiving DTMF Dual Tone Multiple Frequency DTMF Tones Tones that sound like those used by a standard push ...

Страница 3: ... of their exposure and can exercise control over their exposure to meet FCC limits This radio device is NOT authorized for general population consumer or any other use This 2 way radio uses electromagnetic energy in the radio frequency RF spectrum to provide communications between two or more users over a distance It uses radio frequency RF energy or radio waves to send and receive calls RF energy...

Страница 4: ...r in Standby Mode Your BK Radio 2 way radio complies with the following RF energy exposure standards and guidelines United States Federal Communications Commission Code of Federal Regulations 47 CFR 1 1307 1 1310 2 1091 and 2 1093 American National Standards Institute ANSI Institute of Electrical and Electronic Engineers IEEE C95 1 1992 Institute of Electrical and Electronic Engineers IEEE C95 1 1...

Страница 5: ...mes available or the PTT switch is released whether the CG button is on or off Channels not programmed with a receive Channel Guard value can be used to transmit regardless of carrier activity DMH Owner s Manual 7 RF EXPOSURE COMPLIANCE AND CONTROL GUIDELINES AND OPERATING INSTRUCTIONS To control exposure to yourself and others and to ensure compliance with the RF exposure limits always adhere to ...

Страница 6: ...nual 33 DTMF ENCODING Analog Mode Only Radios with keypad equipped microphones can be programmed to enable DTMF Dual Tone Multiple Frequency encoding To send DTMF tones similar to the tones used by a standard push button telephone 1 Press and hold the PTT switch 2 Press any of the keys on the microphone s keypad You will hear a sidetone The FCN PRI ENT and CLR keys respond as DTMF tones A B C and ...

Страница 7: ...DMH Owner s Manual 9 The display can show channel numbers Numeric Mode channel labels Alphanumeric Mode or receive and transmit frequencies The Display Mode and Channel Labels are programmed by the technician along with Group Labels if applicable and channel frequencies The display shows slightly different indications during Channel Scan and Priority Scan operation in alphanumeric and numeric mode...

Страница 8: ...ted channel with the emergency bit set indicating an emergency condition If the Channel Selector is changed the Emergency Mode will follow to the newly selected channel Cycle power to return the radio to normal operation On channels programmed for analog transmissions and channels programmed for Mixed Mode transmissions with the TX Digital switch OFF pressing PTT in Emergency Mode will result in a...

Страница 9: ...ons will be disabled If the radio is in Unit To Unit Mode that mode will be exited and the radio will be placed in Emergency Mode Each subsequent press of PTT will cause the radio to DMH Owner s Manual 11 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 sign...

Страница 10: ... s Manual 29 When the hold time expires the display will return to the normal Operating Mode display but the phone icon will flash until the microphone s key is pressed putting the radio in Unit To Unit Mode displaying the last active ID UNIT TO UNIT CALLBACK If Unit To Unit callback is enabled and a Unit To Unit call is received on the Ready to Transmit RTX channel the user may press PTT before t...

Страница 11: ...he ID matches one of the Call List IDs the associated label will be displayed along with the RX and phone icons Otherwise the numeric ID will be displayed along with the RX phone and ID icons The calling unit s ID will be displayed for the duration of the reception and once the signal goes away for a programmed hold time DMH Owner s Manual 13 MIXED MODE TALKBACK If Mixed Mode Talkback is enabled t...

Страница 12: ...UNIT MODE When the radio is in Unit To Unit Mode all scanning functions will be disabled The radio will receive and transmit on the Ready to Transmit RTX channel only 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 To alert the user that the radio is in Unit To Unit Mode a...

Страница 13: ...r right corner of the display Channels programmed for analog only operation will not be able to transmit or receive Unit To Unit calls DMH Owner s Manual 15 Press and hold the microphone s CLR button Wait for the radio to start beeping and for the ZERO ALL message to appear on the display While continuing to hold the CLR button press and release the PTT switch Release the CLR button The radio will...

Страница 14: ... keypad will be re locked when Unit To Unit Mode is exited DMH Owner s Manual 25 To reply to a message on the priority channel turn the Channel Selector knob to the priority channel and then transmit Priority Mode B with Scan With Priority Scan and Channel Scan on the radio scans until it locks on to an active channel The radio continues to sample the priority channel while listening to the active...

Страница 15: ... Priority indicator lights up illuminates The radio changes to the priority channel and holds for the duration of the transmission DMH Owner s Manual 17 PUSH BUTTON CONTROLS MON Monitor Squelch Noise Press the MON button to start or stop monitoring squelch noise This allows you to set a comfortable volume level SCN Channel Scan Press the SCN button to start or stop scanning channels in the scan li...

Страница 16: ... display flashes SCN alphanumeric mode or two flashing bars numeric mode If a message is received on a priority channel the Priority indicator illuminates and the radio receiver locks onto that channel for the duration of the transmission unless a higher priority channel interrupts Priority Scan can be used in combination with Channel Guard with Priority Scan on arrow appears above PRI button Chan...

Страница 17: ...perates only while the radio is not transmitting and can be used in combination with scan operation DMH Owner s Manual 19 HOM Home Channel Press the HOM button to go to the pre programmed Home Channel To set a different Home Channel select the desired channel using the Channel Selector knob press the HOM button and hold it for more than 1 second until the arrow above the HOM button appears on the ...

Страница 18: ...hen a signal is detected scanning stops while the radio checks for the proper Channel Guard value If the signal contains the proper Channel Guard value the radio receives the message Otherwise the radio resumes scanning immediately NUISANCE CHANNEL DELETE With Channel Scan on and Nuisance Channel Delete enabled pressing and holding the SCN button for more than 1 second will temporarily remove a cu...

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