Radioddity CB-900 PRO CB Radio Instruction Manual

Radioddity CB-900 PRO CB Radio

Product Information

Specifications

• Model: CB-900 PRO
• Product Type: CB Radio
• Antenna Impedance: 50 ohms, unbalanced
• Fuse Requirement: 3A, 250V

Product Usage Instructions

Mounting the Radio

1. Choose a suitable location ensuring it doesn’t obstruct the driver or passengers.
2. Fix the Bracket using Self-tapping Screws and Pads.
3. Attach Adhesive Case Protectors to the Mounting Bracket, insert the Radio, and adjust the angle using the Adjusting Screws.
4. Tighten the Adjusting Screws firmly to securely mount the radio and accessories.

Microphone Connection

1. Plug the microphone connector into the microphone jack.
2. Tighten the retaining ring on the microphone connector by hand.

Antenna Installation

1. Screw the antenna connector into the antenna jack.
2. If needed, ensure grounding of the antenna system for optimal performance.

Power Connection

1. Connect the positive (red) power cable to the + terminal of the battery.
2. Connect the negative (black) power cable to the – terminal of the battery.
3. Connect the DC power cable to the transceiver’s power supply connector.

Replacing Fuses

1. If a fuse blows, determine and correct the issue before replacing it with a new 3A, 250V fuse.
2. Use caution to twist open the fuse holder, replace the fuse, and securely close it.
3. Ensure only the correct fuse type is used to prevent damage.

Microphone Hanger Installation

1. Select a location that doesn’t interfere with the driver.
2. Install the hanger using the supplied self-tapping screws and pads.

FAQ

• Q: What should I do if my newly installed fuses continue to blow?
  A: Disconnect the power cable and contact your authorized dealer or an authorized service center for assistance.

Website: www.radioddity.com
Email: support@radioddity.com

STANDARD ACCESSORIES

INSTALLATION

Choose the most appropriate location from a simple and practical point of view. If installed in a vehicle, care should be taken to ensure your radio does not obstruct the driver or passengers.

1. Use the Self-tapping Screws and Pads to fix the Bracket to a suitable location.
2. Attach the Adhesive Case Protectors to the inside ends of the Mounting Bracket and insert the Radio. Fit the Adjusting Screws loosely, and choose a suitable angle by moving the Adjusting Screws to one of the 3 positions on the Mounting Bracket.
3. Tighten the Adjusting Screws firmly by hand. Make sure the radio and all accessories are securely mounted.

MICROPHONE CONNECTION

1. Plug microphone connector into the microphone jack.
2. Tighten the retaining ring on the microphone connector by hand.

ANTENNA INSTALLATION

Before using this radio, please install an efficient and resonant antenna. Using an antenna that is correctly installed and tuned will enable excellent communication performance.
This radio requires an antenna impedance of 50 ohms, unbalanced.

1. Screw the antenna connector into the antenna jack.
2. If required, grounding of the antenna system will ensure best performance. WARNING:
   • NEVER transmit without a connected resonant antenna, or a suitable 50 ohm load being connected. Damage to the radio may result.
   • To reduce the risk of electric shock, or radio damage, base station installations should include lightning protection devices.
   • Ask your Radioddity dealer for available antenna options.
3. A mobile antenna can be mounted in various locations, for example:

POWER CONNECTION

This radio can operate at both 12 or 24 V voltage systems. A switching is not necessary. Please refer to the radio Specifications to ensure your DC power supply can provide enough current (amps), otherwise poor performance may occur.

1. Connect the positive (red) power cable to the + terminal of the battery.
2. Connect the negative (black) power cable to the – terminal of the battery.
3. Connect the DC power cable to the transceiver’s power supply connector.
   • Locate the power cable away from high temperature, moisture, and other electrical systems. Ensure it is installed where it cannot be damaged.
   • It is not recommended to use a vehicle cigar/cigarette lighter socket to power the radio, as it may not supply the correct voltage or current.
   • Do not remove the fuse holder from the cable.

– (Black wire) connected to chassis ground in most vehicles (confirm with your vehicle manufacturer)

REPLACING FUSES

This radio requires a 3A, 250V fuse. If the fuse blows, determine the reason, then correct the problem. After the problem is resolved, replace the fuse. If newly installed fuses continue to blow, disconnect the power cable and contact your authorized dealer or an authorized service center:

1. Twist the two fuse covers in opposite directions, and open it.
2. Replace the blown fuse with new one, and close the fuse holder.
3. Be sure to only use the correct fuse type, otherwise damage may occur.

INSTALL MICROPHONE HANGER
Choose a location which will not interfere with the driver. Use the supplied self-tapping screws and pads to install the hanger.

INSTALL EXTERNAL SPEAKER (Optional)
If using an external speaker, please choose an 8 ohm speaker with a 3.5mm mono (double cable) TS type plug.

1. Install the external speaker in a suitable place.
2. Plug into the speaker jack.

GETTING ACQUAINTED

Front Panel

Rear Panel

Microphone

HOW TO USE YOUR RADIO

Power OFF/ON

1. Turn the VOL knob clockwise to switch the radio ON, the radio may emit a beep (if the beep function is enabled). The LED display will show a channel number.
2. Turn the VOL knob anti-clockwise, until hear Ka Ta, the radio is powered off.

Volume Control
Turn the VOL knob clockwise to increase the Volume, Turn it anti-clockwise to decrease the Volume.
Note: Adjust the Volume during communication to obtain a suitable level.

Automatic Squelch Control (ASQ)
Turn the SQ knob anti-clockwise to the leftmost position enables the ASQ function. “A9” appears on the LED. No repetitive manual adjustment and a permanent
improvement between the sensitivity and the listening comfort when ASQ is active.
This function can be disconnected by turning the switch clockwise. In this case the squelch adjustment becomes manual.

Manual Squelch Control (SQ)
Turn the SQ knob clockwise to the exact point where all background noise disappear.
This adjustment should be done with precision as, if set to maximum (fully clockwise), only the strongest signals will be received.

Mic Gain Control
In POWER ON status, turn the MIG GAIN knob to adjust the Microphone Gain.
Clockwise to increase, and anti-clockwise to decrease.

RF Gain Control
In RX, turn the RF GAIN knob to set the reception sensitivity. Clockwise to increase, and anti-clockwise to decrease. Maximum position in the case of long-distance call
reception. You can decrease the RF GAIN, to avoid distortions, when the interlocutor is near.

TALK BACK
This function allows you to hear your own modulation in the optional internal or external speaker connected to the EXT.SP jack.
Turn the TALK BACK knob anti-clockwise to the leftmost position disable the TALK BACK function.
Turn the TALK BACK knob to increase (clockwise) / decrease (anti-clockwise) the volume level of the TALK BACK.

Rotary “PUSH” Knob
In normal operation, turn rotary PUSH knob to change the channel. Clockwise to increase, and anti-clockwise to decrease the channel.

UP / DN Buttons On Microphone
In normal operation, press UP / DN buttons on the microphone to change the channel. UP to increase, and DN to decrease the channel.
In MENU mode (press the PUSH knob for about 3 seconds to activate this mode), the UP or DN buttons allows to select the mune to be set.

SCAN
Press and hold UP or DN buttons on the microphone for 7 seconds or until a beep sounds activate the 40 channels scan function. The scanning stops as soon as there
is a busy channel.
In scanning mode, turn rotary PUSH knob on the unit or press UP or DN buttons on the microphone to change scan direction.
Press PTT button to exit channels scan.

PF Buttons On Microphone
Press PF button on the microphone to select the feature to be displayed in TX. LCD alternates with: the emitted power level or Standing Wave Ratio (SWR)

SLIDE SWITCHES

FUNCTION MENU

1. Press and hold the PUSH knob to enter menu.
2. Turn the rotary PUSH knob or press the UP / DN buttons on the microphone to select the menu.
3. Press the PUSH knob to validate. The parameter of the chosen function blinks on the display.
4. Turn the rotary PUSH knob or press the UP / DN buttons on the microphone to modify the value of the parameter.
5. New press PUSH knob to validate the chosen value. The parameter stops blinking.
6. If no key is pressed, the unit exits MENU after 10 seconds. Press and hold the PUSH knob or press PTT button to validates the last setting and exists MENU.

beep sound Default : ON
2| Roger beep sound setting| Roger Beep| OFF (default), 1 ~ 6
OFF: turn off RB sound function.
3| Backlight brightness setting| Dimmer| Bright (default)
Dimmed
4| Signal strength meter type setting| Display Type| S-Meter Bar graph Classic(default)
5| Select the feature to be displayed in TX| Display Mode| RF (default) SWR
NOTE: Use the PF button on the microphone for quick selection.
6| Microphone type setting| Mic Type| Electret (default)
Dynamic
7| Scan type setting| Scan Type| Squelch (default)
Time
---|---|---|---
8| ECHO function setting| ECHO| ON : turn on ECHO function
OFF : turn off ECHO function (default)
9| ECHO volume level
setting| ECHO Volume| 1 ~ 32
Default : 28
10| ECHO delay time setting| ECHO Delay| 1 ~ 32
Default : 28
11| ALERT function setting| WX Alert| ON : turn on ALERT function
OFF : turn off ALERT function (default)
12| Time out timer| Time Out Timer| OFF , 1Min ~ 10Min
Default : 3Min
13| SWR warning setting| SWR Warning| OFF , 2:1 ~ 10:1
Default : 2:1
This function can set the threshold for antenna warning. When it is detected that the SWR of your antenna system exceeds the set threshold, the emitted red indicator light will flash and the LCD will display “SWRHI” to alerts you to trouble in the antenna system.
14| PA-RX path setting| PA-RX Path| PA (default):
The modulation of the microphone and the received signal are transmitted to the PA loudspeaker connected to jack PA.SP.
IN/EXT :
The modulation of the microphone is transmitted to the PA loudspeaker connected to jack PA.SP; the received signal is transmitted to the internal loudspeaker (or external optional loudspeaker connected to jack EXT.SP).
OFF :
The reception is no more functional. Only the modulation of the microphone is transmitted to the PA loudspeaker connected to jack PA.SP.
15| ASQ function setting| ASQ| ON : turn on ASQ function OFF : turn off ASQ function Default : ON

Resume Factory Default
Press and hold the PUSH knob to enter menu.
Turn the rotary PUSH knob or press the UP / DN buttons on the microphone to select the Reset function.
Press the PUSH knob to validate. The option blinks on the display (YES or NO).
Turn the rotary PUSH knob or press the UP / DN buttons on the microphone to select the option.
NO : stop reset operation.
YES: continue reset operation.
Press the PUSH knob to confirm, the unit automatically reseted.

SPECIFICATION

GENERAL

Modulation Mode| AM/FM
Frequency Range| 26.965-27.405MHz
Weather Channels| 162.400-162.550MHz
Frequency Tolerance| ±5.0ppm
Input Voltage| 12/24V
Dimensions| 210(L)x185(W)x56(H)mm
Weight| 1.02kg
Operating Temperature Range| -20°c to +50°c
** Current Drain| Transmit| 3A MAX
Receive| Squelched 0.3A
VOL Max| 0.7A
Antenna Connector| UHF, SO-239
TRANSMITTER
Power Output| 4 Watts FM/AM
Transmission interference| inferior to 4nW
Frequency Response| 300-3000Hz
Modulated signal distortion| inferior to 5%
Output Impedance| 50 ohms
RECEIVER
Sensitivity| Less than 1uV for 10dB(S+N)/N
Image Rejection| 70dB
Adjacent Channel Rejection| 60dB
** IF Frequencies| 1st 10.695MHz
2nd 455KHz
**** Automatic Gain Control(AGC)| Less than 10dB change in audio
Output for inputs from 10 to 50000uV
Squelch| less than 1uV
Audio Output Power| 2Watts at 80 less than 10% distortion
Frequency Response| 300-3000Hz

Note: Specifications are subject to change without notice due to advancements in technology.

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