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Yaesu FT-991 User Manual

Yaesu FT-991
154 pages
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HF/VHF/UHF All Mode TrAnsceiVer
FT-991
operATing MAnUAl
YAESU MUSEN CO., LTD.
Tennozu Parkside Building
2-5-8 Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-0002 Japan
YAESU USA
6125 Phyllis Drive, Cypress, CA 90630, U.S.A.
YAESU UK
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.

Table of Contents

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Yaesu FT-991 Specifications

General IconGeneral
Frequency Range Transmit1.8 MHz - 54 MHz, 144 MHz - 148 MHz, 430 MHz - 450 MHz
Antenna Impedance50 Ohms
Antenna ConnectorSO-239
Supply Voltage13.8 V DC ±15%
ModesSSB, CW, AM, FM, C4FM Digital
Display3.5-inch color TFT LCD
Weight4.3 kg

Summary

General Description

Built-in High-Brightness TFT Display

Features a 3.5-inch full-color TFT display for graphical status and operation.

Before You Begin

Installation and Interconnections

Front Panel Controls & Switches

Power, Audio & Microphone Jacks

Description of ON/OFF, KEY, PHONES, and MIC jacks on the front panel.

Function Buttons

Explains the F(M-LIST), MENU(SETUP), BAND, and MODE buttons.

Tuning & Memory Controls

Covers A=B, A/B, RCL/STO, TUNE, C.S, TXW, V/M buttons.

Tuning, Clarifier & Gain Knobs

Describes Main Tuning Dial, FAST, LOCK, CLAR, RF GAIN, and AF GAIN controls.

Rear Panel Connections

Basic Operation

Receiving on Amateur Bands

Step-by-step guide for initial transceiver setup and receiving signals.

Clarifier & Tuning Controls

Using CLAR, LOCK, DIMMER, and VFO COLOR for reception.

Convenience Features

Interference Rejection

Attenuator & IPO Settings

Explains how to use the Attenuator and IPO for signal optimization.

Contour Control Operation

Adjusting the Contour filter for sound and readability enhancement.

IF Shift & Width Tuning

Using IF SHIFT and WIDTH to reduce interference by adjusting passband.

Narrow IF Filter & Notch Filter

Using the NARROW filter and IF NOTCH for interference elimination.

Digital Filters (DNF & DNR)

Details on Digital NOTCH Filter and Digital Noise Reduction functions.

Tools for Comfortable Reception

Transmission Features

SSB/AM Mode Transmission

Procedures for transmitting in SSB and AM modes, including MIC GAIN setup.

Automatic Antenna Tuner (ATU) Operation

How to use the built-in ATU for impedance matching.

Parametric Microphone Equalizer

Adjusting equalizer settings for transmit signal quality.

Speech Processor Operation

Using the Speech Processor to increase talk power and intelligibility.

SSB Transmitted Bandwidth Adjustment

Adjusting transmit bandwidth for fidelity or talk power.

Transmitter Convenience Features

CW Mode Operation

Straight Key Setup

Operating CW using a straight key or emulation.

Built-in Electronic Keyer Usage

Selecting keyer modes, adjusting speed, and using CW auto mode.

Full Break-in (QSK) Operation

Configuring the transceiver for full break-in CW operation.

Keyer Weight & Polarity Settings

Adjusting dot/dash ratio and reversing keyer polarity.

CW Convenience Features

CW Spotting & Zero-Beating

Techniques for precise frequency alignment with other stations.

CW Delay Time & Pitch Adjustment

Setting CW delay time and adjusting the CW pitch.

Contest Memory Keyer Functions

Programming contest numbers and message/text memories.

TEXT Memory Programming

Storing text messages using a text-entry technique.

FM Mode Operation

C4FM Mode Operation

MEMORY OPERATION

Convenient Memory Functions Overview

Describes regular, PMS, and QMB memory types.

Standard Memory Operations

Storing, recalling, labeling, and erasing memory channels.

Memory Groups Management

Organizing memories into groups for easier selection.

VFO and Memory Scanning

MENU MODE

INSTALLATION OF OPTIONAL ACCESSORIES

SPECIFICATIONS

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