Radioddity DB20-G - GMRS Car Mobile Radio Manual

QUICK GUIDING

Prepare work

1. DC power supply: 12-14V, 10A≥
2. Car antenna: 136-174, 400-490MHz, 20w, SL16 connector≥
3. Magestic sucker

Quick Use

1. Open package, take out DB20-G radio and spares.
2. Connect power supply, microphone and antenna.
3. Turn on power supply, then turn DB20-G volume knob to power on DB20-G.
4. Choose wanted GMRS channel by DB20-G or its microphone to start communication.

ACCESSORIES

Standard Accessories

GETTING ACQUAINTED

Front panel

Rear panel

Microphone

BASIC OPERATIONS

Power On/Off

1. Turn the Volume knob clockwise to turn on the radio, the radio LCD will display programmed text and emit a beep sound.
2. Power Off: Turn volume knob anti-clockwise until you hear ""click" to turn off the radio

Adjusting the Volume

Turn volume knob clockwise to increase the "audio level" and anti-clockwise to reduce it.

Switch between Main Channel and Sub Channel

In standby status, press the microphone key or front panel key to switch between main channel and sub channel. The top left corner of LCD will display current main channel.

Adjust Channel

1. Press microphone key or front panel key to switch the radio to channel mode, press microphone【UP】/【DN】key or front panel / key to select a channel upward or downward.
2. In channel mode, input three numbers by number key for its direct selection (eg: 001 for channel 1).

Store channel

In standby status, press the microphone key, the top left corner will display "Func", then press [ DN ] KEY, the LCD bottom left corner will display Save to XXX,【UP】 now press 【UP】/【DN】 key to select a channel number, hold key to store the new frequency and return to standby.

» XXX reflects for the channel number, if LCD displays "Null" under "Save TO XXX", means that the current channel is empty.

Channel Delete

1. In channel mode, press microphone key, then press [ DN ] key, the LCD displays "Delete XXX" and frequency, presss【UP】/【DN】key to select the channel to be deleted, then hold key for deleting the current channel.

» "XXX" reflects for the channel number, the LCD displays "Null" after the channel is deleted.

Receiving

Select a receiving channel or frequency for receiving call, if the RX signal is week, hold front panel key or microphone key to monitor weak signals.

RX frequency range

1. GMRS channel: GMRS frequency
2. UHF/VHF Full band: 136-174/400-490MHz
3. FM radio 65-108Mhz: available in freuqency mode only. user can input frequency by microphone number key like 8,8,,0,0,0,0,0, is 88Mhz.

BASIC OPERATION

» When the RX icon and field strength flashes, but can not hear the calling, it means current channel receive a matching carrier but unmatching signaling. Refer to CTCSS/ DCS CODE or Optional Signaling setup).

Transmitting

Hold [PTT] and speak into microphone. the radio start transmit, the screen shows red TX and field strength. Hold the microphone approximately 2.5-5.0cm from your lips and speak into the microphone at your normal voice level: it will help to transfer best audio signal.

Note:

1. According to FCC Part 95E standard, CH 8- CH14 are for 0.5W FRS channels, DB20-G minimum power 5W, maximum power 20W, so CH8-CH14 not allow transmiting.
2. Follow Part 95E rule, DB20-G only allow transmitting on GMRS frequencies.

Squelch Off

In standby, press microphone key or front panel key to turn off squelch, the radio will monitor weak signal.

Emergency Alarm

In standby, hold key, release it until the LCD displays ALARM, the alarm function turns on. Program emergency alarm rule shall be programmed by PC software.

Keypad Lockout

In standby, hold key or key, the radio emit Du sound, the LCD displays LOCK. Now release the key, the keypad is locked. To turn off key lock, hold key or key until a "Du Du" tone signal is heard, the LOCK icon disappears, now you may release the key.

Transmit Tone Pulse Frequency

Hold PTT and [DN] key will transmit selected Pre-programmed tone pulse frequency.

VFO Scan and Channel Scan

1. VFO scan: In VFO mode, press microphone key or key to start VFO scan. If the radio has program PL1, PH1, ,PL2, PH2,frequency( in the bottom of channel list), VFO scan will between PL1-PH1 and PL2-PH2.
   Note: PL and PH is valid when current working frequency is within PL1-PH1 or PL2-PH2
2. Channel Scan: In channel mode press microphone key and then press key to start channel scan. Channel scan setting shall be programmed by PC software.

VOX On/Off control

In standby, hold [V/M] key until LCD displays VOX icon, repeater this step or repower on radio to turn off VOX function.

Note: Before turn on VOX, please set VOX level in 26th menu.

How to Install Driver and Start Programming

1. After install PC software, click "Start "menu in computer, under "ALL PROGRAMS" menu, choose and click "USB To Com port" in DB20-G program, install "USB To Com port" driver by indication.
2. Connect the optional USB Programming cable.
3. Click "DB20-G" programm under "ALL PROGRAMS" menu.
   click "OK" to start programming software.

SHORTCUT OPERATION

Press microphone key and then press number key to fast enter following functions, then press【UP】/【DN】key to select the value. presss【PTT】key or key for storing.

Function list

No.	Function name	Combination Key
1	Squelch level setting
2	Optional signaling setting
3	Scan Skip
4	Scan
5	Busy channel lockout
6	Time out timer
7	Sub channel on/off switch
8	Function Menu
9	Power setting.
10	LCD brightless
11	DTMF Code check

» In DTMF check mode

When check DTMF code, press PTT will send current DTMF code.

To revise DTMF code, press key and then press key to enter edit mode. input DTMF code by number keys, then press PTT to transmit the code and store.

FUNCTION SETTING

By Front Panel Key

1. Press key to enter main menu.
2. Press key or key to choose function.
3. Press key to choose value. /
4. Press key or key to store and exit.

» When setting DCS code, key is for switch between positive and inverse code.

By Microphone Key

1. Press key and then press key to enter menu.
2. Press key or key to choose function.
3. Press [UP] / [DN] key to choose value.
4. Press key to store and exit

» When setting DCS code, key is for switch between Positive and inverse code. key is for choose special DCS.

Function list

Reset Factory Default

If your radio seems to be malfunctioning because of wrong operation or setup, this function will resume all setup and channels to factory default.

1. Press front panel key to enter main MENU list.
2. Press or key to chooe 30th function, the LCD display reset options.
3. Press key to chooe/ "FACTORY?"。
4. Hold key, until the radio re-power on.

After reset, all channel and fucntion setting will resume default value.

» If choose "INITIALIZE?", only function setting value will resume to default setting.

SPECIFICAITONS

ATTACHED CHART

51 groups CTCSS Tone Frequency(Hz)

1024 groups DCS Code

Menu List

Videos

Radioddity DB20-G GMRS Radio Review and Tutorial Video

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Radioddity DB20-G - GMRS Car Mobile Radio Manual