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President HR2600 CB-Radio


PRESIDENT HR2600



CHIPSWITCH

Enhanced Microcomputer for the:
President Lincoln
President HR 2600
Uniden HR 2510
Uniden HR 2600


MODIFICATION

PRESIDENT HR2600 FREQUENCY CHANGE
Setting & Using CTCSS


ALINGNMENT

Block Diagaram - CPU and PLL Board

Block Diagaram - Analog Board

Transmitter Alignment

Receiver Alignment

Oscillator Alignment


COMPONENTS

Schematic diagram CPU-board E12-3101

Schematic diagram Analog board E12-3100

PLL0305 PLL Frequency Synteheseizer

SM5152A PLL Frequency Synteheseizer

M54460L Hig Speed Frequency Divider

SO42P / TDA6130-5

IR3N06 Narrowband FM IF

AN612 Balanced Modulator

TA7320P Balanced Mixer

TDA1905 Power Amplifier

M5223L Dual Operational Amplifire

NJM4558S Dual Operational Amplifire

MRF477 Finale Transistor

2SC2166 Driver Transistor

FT1 Receiver Band Pass Filter

FT4 Transmitter Band Pass Filter


Microphone Connection

Pin Description
1 Microphone
2 Ground
3 TX Key (Connect to Ground)
4 Program Up (Connect to Ground)
5 Program Down (Connect to Ground)

Link`s

PRESIDENT LINCOLN MODIFICATIONS

15 Meter Modification / Ideas / Suggestions / Cautions