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MFJ MFJ-207 User Manual

MFJ MFJ-207
18 pages
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INSTRUCTION MANUAL
CAUTION: Read All Instructions Before Operating Equipment
MFJ ENTERPRISES, INC.
300 Industrial Park Road
Starkville, MS 39759 USA
Tel: 662-323-5869 Fax: 662-323-6551
COPYRIGHT 2006 MFJ ENTERPRISES, INC.
C
Model MFJ-207
VERSION 0B
HF 10-160M SWR Analyzer

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MFJ MFJ-207 Specifications

General IconGeneral
Impedance50 Ohms
DisplayAnalog Meter
Power Source9V Battery
Frequency Range1.8 to 30 MHz
MeterSWR

Summary

DISCLAIMER

INTRODUCTION

FEATURES

Describes the key attributes of the MFJ-207 analyzer, highlighting portability and accuracy.

USES FOR THE MFJ-207 HF 10-160M SWR ANALYZER

SYSTEM CONTROLS AND INDICATORS

Front Panel Jacks and Controls

Details the front panel layout, including power, band select, tune, and SWR meter.

End Panel Jacks

Describes the antenna, frequency out, and power jacks on the end panel.

THEORY OF OPERATION

Block Diagram

Explains the internal functional blocks of the SWR analyzer and their interconnections.

EASY START INSTRUCTIONS

HOW TO MEASURE THE ANTENNA'S SWR AT A PARTICULAR FREQUENCY

Step-by-step guide to measuring SWR at a specific frequency for an antenna.

HOW TO MEASURE THE FREQUENCY AT WHICH THE ANTENNA HAS THE LOWEST SWR

Instructions for finding the resonant frequency where the antenna exhibits the lowest SWR.

Adjust the Antenna for 1:1 SWR

Guidance on adjusting antenna elements to achieve a 1:1 SWR.

Using the MFJ-207 to adjust an antenna tuner

Procedure for using the analyzer to tune an external antenna tuner for optimal matching.

FACTS ABOUT TRANSMISSION LINES AND LINE LOSS

Explains transmission line properties and how line loss affects SWR readings.

APPENDIX A

HOW TO ZERO BEAT THE MFJ-207 AGAINST THE RECEIVER

Detailed steps for using a receiver to accurately calibrate the SWR Analyzer's frequency.

APPENDIX B

FREQUENCY/SWR PLOTTING CHART

Presents a chart for plotting antenna SWR measurements against frequency.

APPENDIX C

SWR at Transmitter Vs. SWR at Antenna

A chart illustrating the relationship between SWR at the transmitter and SWR at the antenna, considering line loss.

TECHNICAL ASSISTANCE

IN CASE OF DIFFICULTY

Troubleshooting common issues like the unit not turning on or the meter not moving.

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