Uniden PRO 500D manual Mobile Antenna, Ground Information, Negative Ground System

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Installation~

Plan the location of the radio and microphone bracket before starting installation. Select a location that is convenient for operation and does not interfere with the

driver or passenger in the vehicle. The radio should be securely fastened to a solid surface using the mounting bracket and self-tapping screws which are provided.

Mobile Antenna

Since the maximum allowable power output of the transceiver is limited by the D.O.C, the antenna isa very important factor affecting transmission distance. It is for this reason that we strongly recommend that you install only a quality antenna in your new CB radio system. You have purchased a superior quality transceiver. Don't diminish its performance by installing an inferior antenna.

Only a properly matched antenna system will allow maximum power transfer from the 50-ohm transmission line to the radiating element. We recommend that you use an SWRmeter when installing your antenna. Set your PRO 5000 to channel 20 and make adjustments to the antenna until the meter reads as close to 1as pos- sible. YourUniden dealer is qualified to assist you in the selection of the proper an- tenna to meet your application requirements.

For automobile installation, the whip antenna may be used with good effect. The most efficient and practical installation is a full quarter wave whip antenna

mounted on the rear deck or fender top, midway between the rear window and bumper.

t\ short "loaded" whip antenna is more convenient to install on your automobile, although the efficiency is less than a full quarter wave whip antenna.

For marine installation, consult your dealer for information regarding an adequate

grounding system and prevention of electrolysis between fittings on the hull and water.

Ground Information

Most newer cars and small trucks use a negative ground system, while some older' cars and some newer larger trucks may use a positive ground system. A negative

ground systemisgenerallyidentifiedbythe "-"battery terminal being connected

to the vehicle motor block, but ifyou cannot determine the polarity of your vehi- cle, consult your vehicle dealer for information.

NOTE: This radio may be installed and used in any 12-volt DC negative or positive ground system.

Negative Ground System

Ifyou are operating on a negative ground system, connect the red DC power cord from the radio to the positive "+" battery terminal or other convenient point and connect the black power lead to the chassis orvehicle frame, orthe negative "-" terminal of the battery.

Positive Ground System

If you are operating on a positive ground system, connect the black DC power cord fromthe radioto the negative "-"battery terminalor other convenient point and connect the red power lead to the chassis orvehicle frame, orthe positive "+" terminal of the battery.

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Contents Professional MobileCB radio Introd uction Connecting the Power CordsPage Preventative Maintenance Operating Procedure to ReceiveOperating Procedure to Transmit Ground Information Mobile AntennaNegative Ground System Positive Ground SystemTransmitter Servicing your CB Troub.leshootinProcedure for Obtaining Performance of Warranty /n Unid~n@

PRO 500D specifications

The Uniden PRO 500D is a versatile and reliable CB radio designed for both amateur radio enthusiasts and professional users who require clear communication over varied distances. This compact unit stands out due to its user-friendly interface and a range of features that enhance usability and performance.

One of the key features of the PRO 500D is its 40-channel capability, which allows users to communicate across a wide spectrum of frequencies. This ensures that users have ample options to find clear channels, especially in busy environments. The inclusion of Automatic Noise Limiter (ANL) technology helps to filter out background noise, ensuring clearer and more intelligible audio transmission. This feature is particularly useful in urban areas or during adverse weather conditions, where interference is more likely to occur.

The radio is equipped with an adjustable squelch control, enabling users to manage background noise effectively. This is particularly beneficial for long-distance communication, where static and unwanted sounds can detract from clarity. Additionally, the PRO 500D boasts a built-in dynamic microphone, which enhances audio quality during broadcasting by offering improved sensitivity and frequency response.

The design of the Uniden PRO 500D is both ergonomic and user-friendly. The large, backlit LCD display makes it easy to read channel information, even in low-light environments. The control knobs are well-positioned, providing easy access to volume and squelch controls. Furthermore, the radio features a standard 3.5mm headphone jack, allowing users to connect speakers or headphones for a more personal listening experience.

In terms of installation, the PRO 500D is designed for quick and hassle-free setup. Its compact size means it can fit easily into various spaces within vehicles or work environments. Built to withstand rugged conditions, this CB radio is ideal for both casual and professional use, including trucking and outdoor activities.

Overall, the Uniden PRO 500D stands out for its combination of advanced features, reliable performance, and ease of use, making it a solid choice for anyone in need of dependable communication. Whether navigating cross-country routes or participating in a local community event, this CB radio is equipped to handle diverse communication needs effectively.