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Yaesu FL-110 User Manual

Yaesu FL-110
16 pages
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TOKYO, JAPAN

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Yaesu FL-110 Specifications

General IconGeneral
BrandYaesu
ModelFL-110
CategoryAmplifier
LanguageEnglish

Summary

General Information

Product Description

Details the FL-110's solid-state linear amplifier design and push-pull circuit.

Important Safety Caution

Warns against exceeding rated drive power to prevent PA transistor destruction.

Specifications

Semiconductor Complement

Lists the integrated circuits, transistors, and diodes used in the amplifier.

Controls, Indicators, and Connectors

Front Panel

Details the function of the POWER, DELAY, BAND controls and REC, OPER, AFP indicators.

Rear Panel

Explains the INPUT, ANT, POWER, PTT, and GND connections and controls.

Installation and Operation

Power Polarity Caution

Warns that incorrect DC power polarity will cause permanent damage and void the warranty.

Operational Guidelines

Covers power source, ventilation, and antenna SWR for optimal performance and protection.

Operation and Keying

Keying Methods and PTT Settings

Explains manual/automatic keying and PTT switch polarity for different transceivers.

Driving Power and Antenna Caution

Stresses not to exceed 15 watts drive power and to always connect an antenna before keying.

Automatic Protection Circuit

AFP Circuit Warning

Explains the AFP circuit warning lamp indicates a malfunction, possibly due to antenna or overdrive.

Circuit Description

Major Circuit Units

Details the four main parts: Coupling Unit, Control Unit, Booster Unit, and LPF unit.

Amplifier Stage Configuration

Explains the push-pull amplifier stage using SRF-1427 transistors and negative feedback.

Maintenance and Alignment

Maintenance Precautions

Lists precautions for power voltage, environment, and ventilation to prevent damage.

Realignment Procedure

Delay Adjustment (VR201)

Procedure to adjust the relay hold time using VR201.

CM Coupler Balance Adjustment (TC101, TC301)

Steps to balance the CM coupler using TC101 and TC301 for minimum VTVM readings.

AFP Circuit Adjustment (VR202, VR203, VR301)

Procedure to adjust the Automatic Final Protection circuit for correct operation.

Carrier Control Circuit Adjustment (VR101)

Adjusts the carrier control circuit using VR101 to activate the relay.

PA Bias Adjustment (VR1201)

Procedure to set PA collector idle current when PA transistors are replaced.

Parts List

Unit Component Lists

Lists components for various units including Main Chassis, Coupler, Booster, Control, and LPF.

Accessories and Fuses

Lists associated accessories, cables, and fuses.

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