MFJ Enterprises MFJ-872 User Manual

MFJ Enterprises, Inc.
300 Industrial Park Rd
Starkville, MS 39759 USA
MFJ-872, MFJ-873, & MFJ-874
SWR & Power Meter Instruction Manual
This SWR & Power meter is a highly accurate RF meter for measuring Forward Power,
Reflected Power, and VSWR.
Main Features:
• Large meter display for easy reading.
• Forward RF power readings, switchable to indicate either average power of Peak
Envelop Power (PEP) for SSB and AM transmitters.
• Reflected RF power readings.
• VSWR ratios.
• Illuminated meter.
• Convenient control for easy operation.
Model MFJ-872 MFJ-873 MFJ-874
Frequency Range 1.8 - 200 MHz 125 - 525 MHz 1.8 - 525 MHz
Power Range 1W to 200W
Power Scale 5W, 20W, 200W
Maximum Power 200W
Accuracy 5W Range +/- 10% (AVG)
+/- 15% (PEP)
20W-200W Range +/- 5% (AVG)
+/- 10% (PEP)
VSWR Min Power required = 1 Watt for F.S.D.
Input/Output Impedance 50 Ohms
Input/Output Connectors SO-239
Dimensions (W/H/D) in 7.5 X 3.35 X 5.3
Weight (lbs) 1.76
Accessories Instruction Manual & Lead wire with DC Plug
Front Panel

MFJ Enterprises MFJ-872 Specifications

General

Brand	MFJ Enterprises
Model	MFJ-872
Category	Measuring Instruments
Language	English

Summary

Product Features Overview

Meter Display and Controls

Details the SWR & Power Meter's display and operational controls like function, range, and zero adjust.

Connectors and Power Input

Explains the various input/output connectors and DC power connection for the meter.

Operational Procedures

Forward Power Measurement

Step-by-step guide for measuring forward RF power using the SWR meter.

Reflected Power Measurement

Instructions for measuring reflected RF power with the SWR meter.

VSWR Measurement

VSWR Measurement Procedure

Procedure for setting and measuring VSWR ratios using the SWR meter.

Important Cautions

Handling and Usage Precautions

Advisories on meter sensitivity, maximum power limits, correct connections, and environmental factors.