RELM GPH-CMD Owner's manual

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GPH-CMD Operation and Programming

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GPH-CMD Operation
Programmable Switches Twenty channels per group.
No-stop knob. Radio Beeps at
upper and lower channel
Transmit Indicate Busy Channel /Low Battery Indicate

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GPH-CMD Operation
•Press and Hold FCN Key to
Lock or Unlock Keypad
•Radio beeps on key press
when locked
Keypad Lock
•If No Active Transmit or Receive
Frequency is programmed the Radio
will Display “DISABLED” and Emit an
Alert Tone
Empty Channels
•Receive Only Channels will Display
“No CH’ when attempting to Transmit
No Transmit Frequency
•With Scan Turned off press the ENT
Key to Add the Selected Channel to the
Scan List
•Press the CLR Key to Remove the
Channel From the Scan List
Edit Scan List

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GPH-CMD Operation
•Press FCN Key to Scroll Programmed Functions
•Press PRI Key to Enable or
Disable the Displayed Function
•Factory Defaults: Repeater Talk-Around
and Multi-Group Scan
Keypad Function Select
•With Scan Turned off press the PRI Key to Set
the Selected Channel as Priority One Channel
Priority One Assignment
•Press and Hold the # Key to view the Current
Groups Label
View Group Label
•Press # Key
•Use Number Keys to Select Desired Group
•Enter New Group
Change Group

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GPH-CMD Pick List Operation
•Press FCN Key
•Press 1 Key
•Use PRI Key to Scroll Through the List or
Number Keys View Specific Tone
NOTE: This function may be disabled with the PC
Programming software
View Tone Setting
•Press and Hold FCN Key to Enter Program Mode
•Lear the Current Tone
•Use Number Keys to Select Desired Tone
•Enter New Tone
Edit Global Tone List
•Use Number Keys to Select a Transmit Code
Guard (1-32) from the Programmed Pick List
Note: Assigning a Transmit Code Guard to a
Channel Overrides User Select Operation
Pick List Tone Selection

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GPH-CMD Command Operation
•Press the * Key to Add Current Channel to
Command Group
•Channel is Assigned to Next Available
Command Channel
Add Command Channel
•Press # Key Twice to Select Command Group
•Press Enter to Set Group
Selecting Command Group
•While operating in the Command Group Press *
Key to Remove the Current Channel from the
Command Group
Remove Command Channel

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GPH-CMD Command Operation
•A Long * Key Press Removes all Channels from
Command Group
•While Holding the * Key the Radio will Emit an
Alert Tone and Flash “Delete All”
•When Command Group is Empty a Lower Alert
Tone will Sound
Delete Command Group

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GPH-CMD Programming
•Select Six Digit Password
•Press Enter Key
•Factory Default 000000
Enter Password
•Use FCN Key to Scroll Through Settings
Group Parameters
Group Options
•1-7 Reserved
•8- Add Group to Scan List
Group Label
•Clear Group Channel Label
•Use Number Keys to Select Desired Symbol
•Use FCN to shift left for next character
•Enter New Group Label

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Programming Channel Settings
Channel Bandwidth
•Press the # key to toggle between wideband and
narrowband operation
Receive Frequency
•Press CLR to clear RX Frequency
•User the number keys to select desired frequency.
(136 to 174 MHz, 2.5kHz increments)
•Press the ENT key to set frequency
Receive Code Guard
•Press CLR to clear Code Guard
•User number keys to select desired frequency.
(67 to 255.9 Hz)
•Press ENT to set
•Press # key to enter Digital Coded Squelch

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Programming Channel Settings
•Press CLR to clear RX Frequency
•User the number keys to select desired frequency.
(136 to 174 MHz, 2.5kHz increments)
•Press the ENT key to set frequency
•Press CLR to clear Code Guard
•User number keys to select desired frequency.
(67 to 255.9 Hz)
•Press ENT to set
•Press # key to enter Digital Coded Squelch
•Clear Channel Label
•Use Number Keys to Select Desired Symbol
•Use FCN to shift left for next character
•Enter New Label
Transmit Frequency
Transmit Code Guard
Channel Label

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Programming Global Parameters
Global Parameters
Global Password
•Use FCN Key to Scroll Through Settings
•Press the CLR key
•Enter a new six-digit password
•Press the ENT key to store

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Programming Global Parameters
Global Options 1
When a function is enabled, the corresponding number in
the display will flash.
When the function is disabled the number is steady.
To enable to disable a function press the number key
corresponding to that function.
1. Battery Saver Inhibit
When function 1 is enabled (flashing) the battery saver is turned off. The battery saver should be
turned off only for getting proper voltage readings during service or for systems requiring fast
squelch attack time.
2. Reserved for Future Option
3. Transmit on Priority One
When function 3 is enabled (flashing) transmissions will occur on PR1 channel when operating in
Single or Dual Priority Scan Mode
4. PRI Key Lockout
When function 4 is enabled (flashing) the PRI key is locked out in the Operating Mode. The user will
not be able to change the designation of the Priority 1 Channel.
5. Scan List Lockout
When function 5 is enabled (flashing), the user will not be able to change the channels in the Scan
List. When disabled (steady), the user can edit the Scan List using the ENT and CLR keys.
6. Backlight on Display Change
When function 6 is enabled (flashing), the display will light for the programmed duration on any
display activity.
7. Backlight on Key Press
When function 7 is enabled (flashing), the display will light for the programmed duration on any
key press.
8. Silent Mode
When function 8 is enabled (flashing), all radio alert tones are disabled

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Programming Global Parameters
Global Options 2
1. Reserved for Future Option
2&3. Busy Channel Operating Modes
Busy Channel Indicator - LED illuminates when a signal is received.
Busy Channel Lockout - LED illuminates and PTT disabled
Lockout Override - PTT can be activated by rotating Squelch knob off detent.
4&5. DTMF and ANI Settings
When function 4 is enabled (flashing) the ANI ID number is transmitted with each PTT
When function 5 is enabled (flashing) the keypad becomes active for manual DTMF
When functions 4 and 5 are both enabled (flashing) the ANI tone sequence is transmitted when the
ENT key is pressed while transmitting.
6-8. Reserved for Future Option
Disable (Steady)Enable (Flashing)Override
Enable (Flashing)Enable (Flashing)Lockout
Enable (Flashing)Disable (Steady)Indication
Function 3Function 2Operation
When a function is enabled, the corresponding number in
the display will flash.
When the function is disabled the number is steady.
To enable to disable a function press the number key
corresponding to that function.

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Programming Global Parameters
ANI
•Press the CLR key
•Enter a new DTMF ID Number (1-7 digits)
•Press the ENT key to store the new ID
TX Timeout Timer
•Advance Timeout Time by 15 Second
Intervals with PRI Key (0-225 seconds)
•Press Enter Key to Set
Scan Delay Timer
•Advance Can Hold Time by .5 Second
Intervals with PRI Key (0-7.5 seconds)
•Press Enter Key to Set
Backlight Settings
•Advance Backlight time by 1 second intervals
with PRI key (Always On, Always Off or 1- 7.5
seconds)
•Press Enter Key to set

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Programming Global Parameters
Priority 1 Settings
•Use Number Keys to Select Desired Priority
One Channel
•Enter New Channel
•Use Number Keys to Select Desired Priority
One Group
•Enter New Group
Priority 2 Settings
•Use Number Keys to Select Desired Priority
Two Channel
•Enter New Channel
•Use Number Keys to Select Desired Priority
Two Group
•Enter New Group

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GPH-CMD Cloning
•Enter the Cloning Mode by Pressing the * Key
•Select Target Radio Type with Long Press on * Key
•Target Radio Type Options GPHCMD or GPH
Select Target
•Select Data to be Cloned with Long Press on # Key
•Cloning Data Options:
Command Group,
Group 1-25,
User CG Pick List,
Global Data (GRP 00)
Select Data
•Press FCN Key to Send Data
•Display Flashes While Cloning
•“Failure” Displayed if Data is Not Received by
Slave Radio
Note: Slave radios programmed to reject an incoming
clone will not display any special indication.
Send Information
GPHCMD onlyPICK LIST
GPHCMD, GPHCMND GRP
GPHCMD, GPHGROUP 01 - 25
GPHCMD onlyGROUP 00
Valid TargetData

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GPH-CMD Cloning
Data that can be cloned to another GPH-CMD:
Group Data – Frequencies, Code Guards, Scan List, Label
Command Group Data* - Frequencies, Code Guards, Scan List
Global Data (GRP 00) – Priority Channels, Timers, etc.
UTXG Pick List – 32 Tone Pick List
Data that can be cloned to a standard GPH:
Group Data – Frequencies, Code Guards, Scan List, Label
Command Group Data* - Frequencies, Code Guards, Scan List
The Master’s global data is converted to group data in the slave, and only the
first 16 channels are transferred.
When receiving an incoming clone from a GPH radio, the GPH-CMD radio
ignores group data other than the group label and the group scan list bit.
The GPH-CMD’s global data and channels 17-20 are not disturbed.
*When the Command Group is cloned the target group’s label will be set to “CMND CLN”.
What Clones?