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Table Of Contents - Icom IC-240 Instruction Manual

Pll sythesized 2-meter transcevier

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Instruction manual (35 pages)

Table Of Contents

Table of Contents

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Table of Contents

Table Of Contents2

Specifications3

Mounting Bracket Installation5

Power Requirements6

Transceiver Installation6

Optional Installation6

Rear External Connections6

External Speaker7

Synthesizer Programming7

Matrix Board Sample Diode Installation8

Initial Preparations10

Control Functions11

Programmed Frequency Chart12

Theory Of Operation15

Receiver Circuits15

Antenna Switching Circuit15

Radio Frequency Circuit15

Audio Circuit16

Squelch Circuit16

Transmitter Circuit17

Mixer Circuit17

Power Amplifier17

Audio Frequency Circuit17

Output Power Control18

Meter Circuit18

Power Supply Circuit18

Transmit-Receive Switching Circuit19

Vco-Frequency Conversion Circuit19

Divider Circuit20

Reference Oscillator20

Phase Comparator20

Lock Indication Circuit20

Lock Start Circuit21

Adding Circuit21

Tone Call Circuit21

Diode Matrix Charts22

Voltage Charts24

Tone Call Unit25

Block Diagram26

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Table of Contents

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