background image

12

General

Channels:

40

Frequency Range:

26.965 to 27.405 MHz

Frequency Control:

Phase Locked Loop (PLL) synthesizer

Frequency Tolerance:

±0.002%

Operating Temperature:

-30° to +50°C
-10°C to +50°C (DSC on)

Microphone:

Plug-in type; dynamic

Input Voltage:

13.8 VDC nominal (positive or negative ground)

Current Drain:

TX: AM full modulation, 2.2A (max.)
RX: Squelched, 0.3A; 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.

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 1µV 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

S

Sp

peecciiffiicca

attiio

on

nss

pc78xl.qxd  2/25/99  10:09 AM  Page 12

Summary of Contents for PC78XL - Bearcat Pro

Page 1: ...COVER pc78xl qxd 2 25 99 10 09 AM Page 1...

Page 2: ...sceiver 10 Troubleshooting 10 Radio Code Definitions 11 Specifications 12 Two Year Extended Warranty 13 Carefully unpack your PC78XL and check the contents against this list n PC78XL CB 2 way mobile r...

Page 3: ...ls except Channel 9 may be used for normal communication Channel 9 is reserved by the FCC for emergency communications involving the immediate safety of individuals or protection of property Channel 9...

Page 4: ...nnel Display Displays current channel selection 10 RX TX Indicator Red transmitting green receiving 11 ANT Indicates a high SWR condition in antenna system Check antenna cable and connections 12 Dynam...

Page 5: ...ength REAR VIEW 19 POWER Connects DC power to transceiver 20 EXT SP Connects optional 8 ohm 4 watt speaker to remotely monitor receiver 21 PA SP Connects external 8 ohm 4 watt speaker to use as public...

Page 6: ...ormance 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 Your Uniden dealer is qual...

Page 7: ...e negative battery terminal is usually connected to the vehicle motor block If you cannot determine the polarity system of your vehicle contact your vehicle dealer for information Negative Ground Syst...

Page 8: ...teps 4 Turn SQUELCH fully clockwise so only strong signals can get through 4b Turn SQUELCH fullY counter clockwise until you hear a hiss Everything gets through noise weak signals and strong signals 4...

Page 9: ...2 Adjust MIC GAIN 3 When the channel is clear press the microphone PTT switch and speak Be sure to read and understand Part 95 FCC Rules and Regulations before operating your transmitter Perform a vo...

Page 10: ...2 is acceptable Higher readings indicate a problem in the antenna system Problems may be caused by humidity vibration or corrosion Check both ends of the coaxial cable connector Also check for damage...

Page 11: ...ser serviceable parts inside Except for the fuse in the DC power cord no maintenance is required To replace a blown fuse 1 Press ends of the fuse holder together Twist to open Carefully separate the t...

Page 12: ...MAX If you do not get satisfactory results after performing the above checks call the Uniden Customer Service Center at 1 800 297 1023 8 00 a m to 5 00 p m CST Monday through Friday Technical informat...

Page 13: ...ify your station 10 29 Time is up for contact 10 30 Does not conform to FCC rules 10 32 I will give you a radio check 10 33 EMERGENCY TRAFFIC 10 34 Trouble at this station Code Meaning 10 35 Confident...

Page 14: ...ctivity 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...

Page 15: ...r refurbished unit THE LIMITED WARRANTY SET FORTH ABOVE IS THE SOLE AND ENTIRE WARRANTY PERTAINING TO THE PRODUCT AND IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES OF ANY NATURE WHATSOEVER WHETHER E...

Page 16: ...back cover pc78xl qxd 2 25 99 10 09 AM Page 14...

Reviews: