Product Documentation

Document	Pages	Notes
GMR45 External Photos
GMR45 Internal Photos
GMR45 User Manual

Product

Parameter	Value	Description
Form Factor	Fixed-Mount	The radio is designed to be permanently attached to a surface using fasteners.
Type	Transceiver	The radio can receive and transmit signals.
Width	145 mm	The distance between the left and right surfaces of the main body of the radio, excluding protrusions.
Height	47 mm	The distance between the top and bottom surfaces of the main body of the radio, excluding protrusions.
Depth	190 mm	The distance between the front and rear surfaces of the main body of the radio, excluding protrusions.
Operating Temperature	-20 to 60 °C	The range of temperatures in which the product is designed to be operated.

Tuning System

Parameter	Value	Description
Channel Capacity	30 max	The number of memory channels that can be programmed into the radio.
Scan Type	Full	The radio's tuning system can scan the full range of operating frequencies.
Repeater Capable	Yes	Memory channels can have different transmit and receive frequencies, facilitating the use of radio repeaters.

Signaling System

Parameter	Value	Description
CTCSS Tones	51	The number of distinct CTCSS tones supported by the radio.
DCS Codes	104	The number of distinct DCS codes supported by the radio.

Audio System

Parameter	Value	Description
Output Power	2 W max
Companding	Yes	An audio processing technique that mitigates the effects of a channel with limited dynamic range.

Receiver

Parameter	Conditions	Value	Description
	Tuning System
	Channel Bandwidth
Personal Bands		FRS	Family Radio Service (462.550 - 467.7125 MHz)
		GMRS	General Mobile Radio Service (462.550 - 467.725 MHz)
Operating Frequency		462.55 to 462.725 MHz	The range of frequencies that can be tuned by the receiver.
		467.55 to 467.725 MHz
Sensitivity Threshold	12.5 kHz	0.35 µV max	The magnitude of the smallest RF signal that a receiver can detect.
		0.25 µV max
Spurious Rejection	25 kHz	70 dB min	The ratio of a receiver's response to a signal at a desired frequency and its response to signals at other frequencies that cause a response.
Intermodulation Rejection	12.5 kHz	60 dB min	The ability of a receiver to reject intermodulation products produced by the mixing of two or more signals at the input to the receiver.
	25 kHz	65 dB min
FM Hum and Noise	12.5 kHz	-40 dB max	The frequency modulation present on an unmodulated carrier.
	25 kHz	-45 dB max
Audio Distortion		5 % max
Audio Response		-3 to 1 dB	The degree of precision with which the audio signal level of a receiver responds to the frequency deviation of an FM signal.

Transmitter

Parameter	Conditions	Value	Description
	Tuning System
	Channel Bandwidth
Personal Band		GMRS	General Mobile Radio Service (462.550 - 467.725 MHz)
Operating Frequency		462.55 to 462.725 MHz
		467.55 to 467.725 MHz
Frequency Drift		2.5 ppm	The amount that a transmitter's frequency varies from its nominal value.
Output Power		45 W max	The maximum RF power that a transmitter can produce, as reported by the manufacturer in product documentation.
Measured Power		44.57 W max	Actual output power measured by a telecommunication certification body (TCB) and reported to the Federal Communications Commission.
Spurious Emissions		-60 dB max	Emission on a frequency or frequencies which are outside the necessary bandwidth.
FM Hum and Noise	12.5 kHz	-36 dB max	The frequency modulation present on an unmodulated carrier.
	25 kHz	-40 dB max
Adjacent Channel Power	12.5 kHz	-60 dB max
	25 kHz	-70 dB max
Audio Response		-3 to 1 dB	The degree of precision with which the frequency deviation of a transmitter responds to a designated audio frequency signal level.
Audio Distortion		5 % max
Emission Types	12.5 kHz	11K0F3E	11 kHz occupied bandwidth, FM analog voice
	25 kHz	16K0F3E	16 kHz occupied bandwidth, FM analog voice

Channel Selector

Parameter	Value	Description
Location	Front	The channel selector is located on the front panel of the radio.
Type	Rotary Knob	The setting can be adjusted by rotating a round knob.

Volume Control

Parameter	Value	Description
Location	Front	The volume control is located on the front panel of the radio.
Type	Rotary Knob	The setting can be adjusted by rotating a round knob.

Keypad

Parameter	Value	Description
Lockable	Yes	The keypad can be configured in a way that disables the function of most keys.

Display

Parameter	Value	Description
Location	Front	The display is located on the front panel of the radio.
Backlit	Yes	The display device is illuminated for better readability in poor lighting conditions.
Background Colors	3	The number of background colors from which to choose.

Microphone Port

Parameter	Value	Description
Location	Front Panel	The microphone port is located on the front panel of the radio.

Speaker Port

Parameter	Value	Description
Location	Rear Panel	The speaker port is located on the rear panel of the radio.
Connector Type	3.5mm Mono Mini	2-Position Miniature Phone Jack
Impedance	8 Ω	The effective resistance of the load at audio frequencies.

Antenna Port

Parameter	Value	Description
Location	Rear Panel	The antenna port is located on the rear panel of the radio.
Connector Type	UHF-Female	UHF Female (SO-239)
Impedance	50 Ω

Power Supply Port

Parameter	Value	Description
Location	Rear	The power supply port is located on the rear panel of the radio.
Connector Type	T-Style-Male	2-Position Male T-Style Power Connector
Supply Voltage	13.8 V
Voltage Indicator	Yes

Sponsored Links

When you purchase from these merchants we receive a small sales commission that helps to support this website at no additional cost to you.

Merchant	Address	Phone
Rugged Radios (Amazon)
Walmart	702 SW 8th St Bentonville, AR 72716 USA
TrailRecon	17425 Hada Dr San Diego, CA 92127 USA	+1 800-300-6715

Courtesy Links ▼