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Yaesu FRG-8800 Service Manual

Yaesu FRG-8800
33 pages
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Yaesu FRG-8800 Specifications

General IconGeneral
BrandYaesu
ModelFRG-8800
CategoryReceiver
LanguageEnglish

Summary

CAT System Programming Addenda

DC-DC Converter Efficiency Improvement

DC Modification Kit

Circuit Description Overview

Local Signal Generation

Description of how local oscillator signals are synthesized using PLL.

Alignment Procedures

Alignment Precautions

Important safety and procedural guidelines for performing alignments.

PLL Unit Alignment

2nd Local Oscillator, Course Adjust

Procedure for coarse adjustment of the 2nd local oscillator.

2nd Loop, Reference Osc Frequency

Steps to set the reference oscillator frequency for the 2nd loop.

2nd Loop Oscillator Frequency

Frequency setting for the 2nd loop oscillator.

2nd Local Oscillator Frequency

Fine adjustment of the 2nd local oscillator frequency.

1st Loop Reference Oscillator

Setting the reference oscillator frequency for the 1st loop.

Main Unit Alignment

Carrier Frequency Setting

Setting the carrier frequency for LSB and USB modes.

FRV-8800 VHF Converter Alignment

1st Local Oscillator Adjustment

Adjusting the 1st local oscillator transformers and trimmers.

3rd Local Oscillator Frequency

Setting the 3rd local oscillator frequency.

RF Bandpass Filters Adjustment

Adjusting RF bandpass filters using a sweep generator.

1st Mixer Adjustment

Adjusting mixer stages for peak S-meter indication.

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