Uniden PB010 User Manual

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UNIDEN
'EXPORT”
SERVICE
MANUAL
PB010 CHASSIS (COBRA 148GTL-DX, SUPERSTAR 360 FM)
PB042 CHASSIS (PRESIDENT JACKSON)
PC999 CHASSIS (PRESIDENT GRANT)
OTHER UNIDEN CB CHASSIS - APPLICATIONS
The information in this bookcan be applied to many other
Uniden CB radios since all the current production units
are basically the same.
Examples are:
Stalker 9-FDX, President McKinley export (PC 893).
This uses the MB 8719 and is an 80-channel transceiver
using a single loop Oscillatorcrystal in the 15 MHz range.
It is AM/FM/SSB and same versions also hâve the
British CB band which is switched in by anothercrystal on
a separate sub-PC board.
Cobra 146GTL. President AR-144/AX-144, Midland
6001/7000 (new version), Realistic TRÇ451,
Sears 663.3810, Uniden PC-244. This is basically
identical except for the lack of FM, and the PLL circuit
which uses a uPD2824 ROM chip..

Uniden PB010 Specifications

General

Type	Two-Way Radio
Channels	22
Display Type	LCD
Modulation	FM
Privacy Codes	121
Power Source	3 x AA Batteries
Features	NOAA Weather Alert, Call Alert, Roger Beep, Keypad Lock, Battery Meter, Monitor Channel
Battery Life	Up to 10 hours
Power Output	0.5 - 2 Watts

Summary

PLL Circuitry and Operation

PLL Synthesizer Circuit Description

Detailed explanation of the PLL synthesizer circuit.

Simplified PLL Diagram

Detailed Circuit Descriptions

Local Oscillator & Carrier Oscillator

Receiver Stages Description

Transmitter Stages Description

Description of AM, FM, and SSB transmitter stages.

Additional Transmitter Functions

Service, Modifications, and Notes

SSB AGC Improvement (PB042)

Modification to improve SSB AGC in PB042.

Clarifier Unlock/Frequency Expansion (PC999)

Modification for PC999 clarifier unlock and frequency expansion.

RF Power Output Doubling (PB010)

Roger Beep Disconnection (PB010)

Frequency Expansion (PB010)

Alignment and Testing Procedures

Test Equipment Setup

PLL Synthesizer Alignment

Step-by-step alignment for the PLL synthesizer.

Transmitter Alignment

Step-by-step alignment for the transmitter.

Receiver Alignment

Step-by-step alignment for the receiver.