Uniden PC78 manual Specifications, General

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UC343FH 10/23/03 2:32 PM Page 12

Specifications

General

Channels:

40

CB Frequency Range:

26.965 to 27.405 MHz

Weather Frequency Range:

162.400MHz (WX CH1)

 

162.425MHz (WX CH2)

 

162.450MHz (WX CH3)

 

162.475MHz (WX CH4)

 

162.500MHz (WX CH5)

 

162.525MHz (WX CH6)

 

162.550MHz (WX CH7)

Frequency Control:

Phase Locked Loop (PLL) synthesizer

Frequency Tolerance:

±0.002%

Operating Temperature:

-30˚C to +60˚C (CB)

 

-10˚C to +60˚C (WX)

 

-10˚C to +60˚C (DSC on)

Microphone:

Plug-in type; 600 ohms dynamic

Input Voltage:

13.8 VDC nominal (positive or negative ground)

Current Drain:

TX: AM full modulation, 2.2 A (max.)

 

RX: Squelched, 0.4 A; with maximum audio output,

 

1.2A (nominal)

Size:

7-9/32” W x 8-57/64” D x 2-13/64” H

Weight:

4 lbs. 3 oz. with microphone

Antenna Connector:

UHF, SQ-239

Meter:

Illuminated; indicates relative power output and received

 

signal strength SWR.

Transmitter

Power Output:

4 watts

Modulation:

High- and low-level, Class B amplitude modulation

Frequency Response:

300 to 3000 Hz

Output Impedance:

50 ohm, unbalanced

Receiver

Sensitivity:

Less than 1 µV for 10 dB, (S+N)/N

Selectivity:

6 dB @ 7 kHz, 60 dB; @10 kHz

Image Rejection:

80 dB typical

Adjacent-Ch. Rejection:

60 dB typical

IF Frequencies: Double Conversion:

1st: 10,695 MHz; 2nd: 455 kHz

Automatic Gain Control (AGC):

Less than 10 dB change in audio output for inputs from

 

10 to 50,000 µV

RF Gain Control:

Adjustable for optimum signal reception

Delta Tune Range:

±1.5 kHz, continuously adjustable

Noise Blanker:

RF type

Squelch:

Adjustable; threshold less than 1 µV

Audio Output Power:

4 watts

Frequency Response:

300 to 3000 Hz

Distortion:

Less than 7% at 3 watts, 1000 Hz

Internal Speaker:

16 ohms, round

External Speaker:

8 ohms, disables internal speaker when connected

(not supplied)

 

PA System

Power Output:

4 watts into external speaker

External Speaker for PA

 

speaker:

8 ohms when CB/PA switch is in PA. The PA

(not supplied)

also monitors the receiver; separate jack provided.

Specifications shown are typical and subject to change without notification.

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Contents Page Contents UnpackingEmergency Operation DescriptionElimination of Licensing Controls and Functions Front View PC78 Elite Backlighted PanelRear View Installation Mobile Station InstallationConnecting the Power Cords To Receive Weather Information To Transmit Multi-Function MeterPreventive Maintenance MaintenanceTroubleshooting Servicing Your TransceiverRadio Code Definitions Code MeaningSpecifications GeneralTwo-Year Extended Warranty Uniden America Corporation

PC78 specifications

The Uniden PC78 is a robust and versatile CB radio that has earned a reputation among enthusiasts for its reliability and performance. As a part of Uniden’s long-standing tradition of quality communication devices, the PC78 is designed for both casual users and serious CB radio operators.

One of the standout features of the Uniden PC78 is its sleek design coupled with a user-friendly control interface. The radio comes with an easy-to-read LCD display that illuminates for visibility in low-light conditions. This feature is essential for nighttime operations, allowing users to easily see channel numbers and other vital information without straining their eyes.

The PC78 operates on the 40-channel Citizens Band frequency, providing ample options for communication. It also includes an automatic noise limiter, which helps to reduce background noise and ensure clearer audio quality during transmissions. This technology is especially useful in areas with significant electronic interference, helping users maintain a clear connection.

Another key characteristic of the Uniden PC78 is its power output. The radio operates at 4 watts of maximum power, which is standard for most CB radios, ensuring that users can communicate effectively over reasonable distances. Additionally, the radio is equipped with a built-in SWR (Standing Wave Ratio) meter, which allows users to tune their antennas for optimal performance, ensuring maximum signal strength and clarity.

The PC78 also supports an array of advanced features, including automatic squelch control, which automatically mutes the speaker when no signals are present, preventing unwanted noise. The dynamic squelch control further enhances this feature, adapting to varying signal levels.

Furthermore, the Uniden PC78 includes a dual watch function that allows users to monitor two channels simultaneously, facilitating communication flexibility. Users can easily switch between their primary channel and a secondary one, making it easier to stay updated on different conversations.

In terms of durability, the Uniden PC78 is built to withstand the rigors of daily use, making it suitable for both in-vehicle and base station setups. Its sturdy construction ensures long-lasting performance, making it a reliable choice for both everyday use and rugged environments.

In conclusion, the Uniden PC78 is a feature-rich CB radio that combines advanced technology with user-friendly operation. Its clarity, durability, and range of functionalities make it an excellent choice for anyone looking to enhance their communication capabilities in the CB radio realm. Whether for work or leisure, the PC78 stands out as a dependable option in the competitive market of CB radios.