Radioddity DB25-G Mobile GMRS Transceiver

Product Documentation

Document	Pages	Notes
DB25-G External Photos
DB25-G Internal Photos
DB25-G 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	98 mm	The distance between the left and right surfaces of the main body of the radio, excluding protrusions.
Height	44 mm	The distance between the top and bottom surfaces of the main body of the radio, excluding protrusions.
Depth	128 mm	The distance between the front and rear surfaces of the main body of the radio, excluding protrusions.
Weight	448 g	The mass of the main body of the radio, including the removable battery or removable front panel.
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	200 max	The number of memory channels that can be programmed into the radio.
Channel Bandwidths	12.5 kHz	The radio's tuning system supports channel spacing of 12.5 kHz.
Channel Bandwidths	25 kHz	The radio's tuning system supports channel spacing of 25 kHz.
Repeater Capable	Yes	Memory channels can have different transmit and receive frequencies, facilitating the use of radio repeaters.
VFO Mode	Yes	The radio allows direct frequency selection.

Signaling System

Parameter	Value	Description
Signaling Methods	2-Tone	Two-tone sequential signaling
	5-Tone	5/6/7-tone sequential signaling
	DTMF	Dual Tone Multi Frequency
Remote Actions	Stun	Temporarily disables the receiving radio until it is revived.
	Kill	Permanently disables the receiving radio until a technician reprograms it.
	Revive	Restores a stunned radio to normal functionality.
	Answer Back	Configures the receiving radio to automatically respond to paging calls ("transpond").
CTCSS Tones	50	The number of distinct CTCSS tones supported by the radio.
DCS Codes	210	The number of distinct DCS codes supported by the radio.
PTT ID	Yes	The radio supports Automatic Number Identification

Audio System

Parameter	Value	Description
Output Power	2 W max

Receiver

Parameter	Conditions	Value	Description
	Tuning System
	Channel Bandwidth
Personal Bands		FRS	Family Radio Service (462.550 - 467.7125 MHz)
Personal Bands		GMRS	General Mobile Radio Service (462.550 - 467.725 MHz)
Broadcast Bands		FM	FM broadcast band (88 - 108 MHz)
Broadcast Bands		WX	NOAA weather broadcast band (162.400 - 162.550 MHz)
Operating Frequency		88 to 108 MHz	The range of frequencies that can be tuned by the receiver.
		136 to 174 MHz
		400 to 480 MHz
Sensitivity Threshold	12.5 kHz	0.35 µV max	The magnitude of the smallest RF signal that a receiver can detect.
Sensitivity Threshold	25 kHz	0.25 µV max
Adjacent Channel Selectivity	12.5 kHz	60 dB min	The ability of a receiver to discriminate between a desired signal and an undesired signal in an adjacent channel.
Adjacent Channel Selectivity	25 kHz	70 dB min
Spurious Rejection		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.
Intermodulation Rejection	25 kHz	65 dB min
FM Hum and Noise	12.5 kHz	-40 dB max	The frequency modulation present on an unmodulated carrier.
FM Hum and Noise	25 kHz	-45 dB max	The frequency modulation present on an unmodulated carrier.
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.
Monitor Function		Yes	The radio allows the user to manually open the squelch.

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
Operating Frequency		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		25 W max	The maximum RF power that a transmitter can produce, as reported by the manufacturer in product documentation.
Measured Power		19.54 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.
FM Hum and Noise	25 kHz	-40 dB max	The frequency modulation present on an unmodulated carrier.
Adjacent Channel Power	12.5 kHz	-60 dB max
Adjacent Channel Power	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
Emission Types	25 kHz	16K0F3E	16 kHz occupied bandwidth, FM analog voice
Timeout Timer		Yes	Indicates that a radio is capable of limiting the length of each transmission.

Channel Selector (Front Knob)

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.

Channel Selector (Mic Buttons)

Parameter	Value	Description
Location	Mic	The channel selector is located on a hand microphone.
Type	Up/Down Buttons	The setting can be increased or decreased by pressing a pair of buttons.

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.

Squelch Control

Parameter	Value	Description
Type	Menu Item	The setting can be adjusted by using the radio's menu system.

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.
Type	LCD	Liquid Crystal Display with Fluorescent Backlighting
Backlit	Yes	The display device is illuminated for better readability in poor lighting conditions.
Foreground Colors	9
Background Colors	9	The number of background colors from which to choose.

Internal Speaker (Bottom)

Parameter	Value	Description
Location	Bottom	The internal speaker is located at the bottom surface of the radio.

Internal Speaker (Mic)

Parameter	Value	Description
Location	Mic	The internal speaker is located inside a handheld microphone (i.e. a speaker mic)

Microphone Port

Parameter	Value	Description
Location	Front Panel	The microphone port is located on the front panel of the radio.
Connector Type	RJ45-Female	8-Position RJ45 Female

Headset Port

Parameter	Value	Description
Location	Rear Panel	The headset port is located on the rear panel of the radio.
Connector Type	3.5mm TRRS

Data Port

Parameter	Value	Description
Location	Rear Panel	The data port is located on the rear panel of the radio.

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)

Power Supply Port

Parameter	Value	Description
Location	Rear	The power supply port is located on the rear panel of the radio.
Supply Voltage	13.8 V +/-15%
Voltage Indicator	Yes

Merchant	Address	Phone
Radioddity	36 Berkley Drive Newark, DE 19702 USA
Radioddity (Amazon)
Nicheone (eBay)