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MFJ Versa Tuner II MFJ-949D User Manual

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MFJ Versa Tuner II MFJ-949D Specifications

General IconGeneral
Power Handling300 Watts
Tuning MethodManual
ConnectorsSO-239
Frequency Range1.8-30 MHz
MeterSWR/Power
SWR ReductionYes

Summary

MFJ Versa Tuner II Overview

General Information

Describes the tuner's purpose, features like antenna matching, balun, selector, dummy load, and cross-needle meter.

Peak Reading SWR/Wattmeter

Explains the operation of the cross-needle meter, including forward/reflected power scales and SWR reading.

Antenna Selector

Details the six positions of the antenna selector switch and provides operational cautions.

Installation Procedures

Antenna Connection Methods

Details connecting coax-fed, random wire, and balanced line antennas to the tuner.

Placement and Grounding

Covers tuner location, grounding requirements, and safety precautions regarding RF voltages.

Using the MFJ-949D

Tuner Control Adjustments

Explains the function of INDUCTOR, TRANSMITTER, and ANTENNA controls for tuning.

Tuning Procedure for Minimum SWR

Provides a step-by-step guide for adjusting controls to achieve minimum SWR.

Troubleshooting SWR Issues

Addresses common SWR problems, arcing, and solutions for achieving optimal SWR.

Schematic Diagram

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