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GMH Plus Owner’s Manual 

19

SCAN DELAY 

Scan delay lets the radio receive a response to a transmission before 

scanning the other channels for activity. If you find that your scanner is 

restarting before message replies are received, you can ask your dealer 

to increase the scan delay time (0-7.5 seconds).
This timer is also used to allow for Talkback Scan.

HI/LO POWER

Each  channel  in  the  radio  can  be  individually  programmed  to  always 

transmit  in  low-power  mode,  regardless  of  the  radio’s 

[LPW]

  button 

(or  microphone  keypad 

[FCN]

  menu  setting).  If  the  programming  for 

the channel allows high-power transmissions, the power level can be 

selected with the 

[LPW]

 button or the keypad 

[FCN]

 menu.

DTMF ENCODING 

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 

D, respectively.

ANI ENCODING 

ANI encoding (Automatic Number Identification), if enabled, transmits a 

sequence of DTMF tones each time you press the PTT switch. You will 

hear a sidetone. Your dealer can program the ANI number to be sent.
If DTMF and ANI are both enabled, the ANI tone sequence is transmitted 

only after the LAA0290 microphone’s 

[ENT] 

key is pressed while the 

PTT switch is activated. You will hear a sidetone. 

TIME-OUT TIMER

The  transmit  Time-Out  Timer  limits  the  duration  of  calls  and  guards 

against  accidentally  locking  on  the  transmitter  and  tying  up  the  radio 

system. Your dealer can program the duration of the Time-Out Timer 

(15-225 seconds, or disabled).

Содержание GMH Plus

Страница 1: ......

Страница 2: ...ontrol Information 3 Radio Controls 6 Basic Operation 6 Channel Guard Operation 7 Channel Groups 8 Programmable Push Buttons Microphone FCN Key Menu 9 Scan Operation 12 Priority Scan 14 User Selected Channel Guard 18 Other Operational Features 18 Alphanumeric Display 21 Definitions And Acronyms 23 Programming Notes 24 ...

Страница 3: ...o 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 p...

Страница 4: ...ot limited to sunlight and x rays RF energy however should not be confused with these other forms of electromagnetic energy which when used improperly can cause biological damage Very high levels of x rays for example can damage tissues and genetic material Experts in science engineering medicine health and industry work with organizations to develop standards for exposure to RF energy These stand...

Страница 5: ...idelines listed below for human exposure to radio frequency electromagnetic energy This radio complies with the IEEE and ICNIRP exposure limits for occupational controlled RF exposure environment at operating duty factors of up to 50 talk 50 listen and is authorized by the FCC for occupational use only In terms of measuring RF energy for compliance with the FCC exposure guidelines your radio anten...

Страница 6: ...o is transmitting To receive calls release the PTT button The red LED will extinguish when the radio stops transmitting Transmitting 50 of the time or less is important because this radio generates measurable RF energy exposure only when transmitting in terms of measuring for standards compliance Transmit only when persons around the vehicle are at least 3 feet 90 centimeters away from the vehicle...

Страница 7: ...s rotated past the highest 16th channel the radio will emit a beep and remain on the highest channel When rotated past the lowest 1st channel the radio will emit a beep and remain on the lowest channel 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...

Страница 8: ...hen press it again and continue talking CHANNEL GUARD OPERATION Channel Guard allows one radio or group of radios to be selectively called within a system If the radio has been programmed with Channel Guard use the following receive and transmit instructions SQUELCH CONTROL Sub audible signaling CTCSS CDCSS is used to allow a group of radios to be selectively called in a system Programming the rec...

Страница 9: ...d Transmit indicator illuminates while the PTT is pressed Talk in a normal voice with the microphone approximately one to two inches from your mouth Release the PTT switch to stop transmitting Hang up the microphone when finished If you pressed the 3 MON button to monitor the channel press it again after the transmission to return to Channel Guard operation CHANNEL GROUPS Radios are separated into...

Страница 10: ...ker ACC Accessory 2 SQL Squelch Adjust NXT Next Scan Channel ACC Accessory 3 LPW Low Power Select If an LAA0290 keypad microphone is used with the GMH radio many of the functions above may also be enabled disabled with the keypad FCN key Press the FCN key to display the function menu Repeatedly press FCN to step through the menu Press PRI to toggle the function on off when the desired menu item is...

Страница 11: ... turn Scan and Priority Scan off then press the PRI button and hold it down for 1 second or more GRP Group Select Press the GRP button to toggle between Group Select and Channel Select Modes Press the GRP button for Group Select Mode Turn the Channel Selector knob to select a group Return to Channel Select Mode by waiting 5 seconds or by pressing the GRP button one time numeric mode or two times a...

Страница 12: ...led the radio reverts to carrier squelch and all transmissions on the assigned receive frequency will be heard When Channel Guard is enabled a message is heard only when the proper Channel Guard is received Transmit Channel Guard generation is unaffected The CG button may also be used to override Busy Channel Lockout if Busy Channel Override is installed HOM Home Channel Press the HOM button to go...

Страница 13: ...ress the PA button to turn the Public Address system on or off When PA is on pressing the microphone PTT switch causes audio to be routed to the audio amplifier without enabling the transmitter ACC Accessory Press the ACC button to turn the installed accessory on or off Up to three ACC buttons may be installed for different accessories SCAN OPERATION RECEIVE Scan operates only while the radio is n...

Страница 14: ...e Channel Delete enabled pressing and holding the SCN button for more than 1 second will temporarily remove a currently active channel from the Scan List If the radio is equipped with a keypad microphone pressing the CLR key while Scan is on will accomplish the same thing Not all microphones support these functions Contact your dealer to determine which features are available with your microphone ...

Страница 15: ...n the scan list SCN appears in the display Press and hold the 3 SCN button for more than 1 second to toggle the channel on or off the scan list GROUP SCAN Channels on each Channel Scan List in groups on the Group Scan List are scanned sequentially The selected group is always scanned when Group Scan is enabled even if that group is not on the Group Scan List When Group Scan is enabled the followin...

Страница 16: ...Otherwise the radio will re check the channel every 4 seconds until the activity on the channel ceases DUAL PRIORITY SCAN In each group up to two of the 16 channels can be designated as priority channels These two PR1 and PR2 are periodically tested for activity even if a different transmission is being listened to Activity on PR2 preempts activity on any of the non priority channels Receptions on...

Страница 17: ...s active during this message the Priority indicator illuminates The radio changes to the priority channel and holds for the duration of the message The display shows the priority channel To reply to a message on the priority channel press the PTT switch and transmit on the priority channel Once activity ceases on the priority channel the radio returns to scan operation Priority Mode B With Priorit...

Страница 18: ...e priority channel while listening to the active channel If activity occurs on the priority channel the radio overrides the active scan channel changes to the priority channel and holds for the duration of the transmission To reply to a message heard on the priority channel press the PTT switch The radio transmits only on the priority channel when Priority Scan is on Once activity has ceased on th...

Страница 19: ... Press the 3 9 key on the microphone keypad The display shows CG The radio will now operate on the frequencies of Channel 5 with Channel 9 Channel Guard values The display shows the Channel Guard channel 9 and then the selected channel 5 Press the microphone s 4 key to display the Channel Guard channel briefly The display shows the group number followed by the Channel Guard channel and then the se...

Страница 20: ...e 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 D respectively ANI ENCODING ANI encoding Automatic Number Identification if enabled transmits a sequence ...

Страница 21: ...ssary to determine if the proper Channel Guard value has been received This will cause the Busy Channel Indicator to flash at various rates BUSY CHANNEL LOCKOUT The Busy Channel Lockout feature applies only to those channels programmed with a receive Channel Guard value When carrier activity is detected on the channel selected the radio checks the receive Channel Guard value If the proper Channel ...

Страница 22: ...s receiving on a scanned channel CG User Channel Guard Active GRP Group Label GMH Series mobile radio displays can be programmed with the following features CHANNEL LABELS You can program the radio with a label for each of the 25 channel groups and a label for each of the 16 channels within each group To display the channel number associated with a channel label Press the microphone s 1 key to dis...

Страница 23: ...tion to group numbers To display a group label turn scanning functions off then Press the microphone s 1 key to display the group number Press and hold the 2 key to display the group label Press the 3 ENT key or wait for about 5 seconds to revert to normal radio operation ...

Страница 24: ...ity The information programmed with a PC on both a global and by channel basis that tells the radio exactly how to operate 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 ...

Страница 25: ...____ FCN 3 _____ FCN 4 _____ FCN 5 _____ FCN 6 _____ FCN 7 _____ FCN 8 _____ FCN 9 _____ FCN 10 _____ FCN 11 _____ Home Channel ________ Talkback Scan c Enabled c Disabled Nusiance Channel Delete c Enabled c Disabled Off Hook Scan c Enabled c Disabled Notes __________________________________________ ________________________________________________ ________________________________________________ _...

Страница 26: ......

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