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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
Frequency Range
1.8 - 200 MHz
Power Range
Power Scale
Maximum Power
Accuracy 5W Range
20W-200W Range
VSWR
Input/Output Impedance
Input/Output Connectors
Dimensions (W/H/D) in
Weight (lbs)
Accessories
Instruction Manual & Lead wire with DC Plug
Front Panel
MFJ-873
MFJ-874
125 - 525 MHz
1.8 - 525 MHz
1W to 200W
5W, 20W, 200W
200W
+/- 10% (AVG)
+/- 15% (PEP)
+/- 5% (AVG)
+/- 10% (PEP)
Min Power required = 1 Watt for F.S.D.
50 Ohms
SO-239
7.5 X 3.35 X 5.3
1.76
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Table of Contents
Related Manuals for MFJ Enterprises MFJ-872
Summary of Contents for MFJ Enterprises MFJ-872
- Page 1 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.
- Page 3 Back Panel Explanation of Features: Meter Display: Indicates Forward/Reflected Power in Watts and SWR ratio. Function Switch: Selects Forward Power, Reflected Power, SWR SET, SWR. Range Switch: Selects RF Power Ranges of 5W, 20W, and 200W. SWR SET Control Knob: Sets full scale deflection when measuring VSWR. AVG/PEP Monitor: Selects Average or PEP RF Power Readings.
- Page 4 When the AVG/PEP button is ‘out’ the meter reads average RF power. When the AVG/PEP button is depressed the meter reads Peak Envelope Power for use with SSB and AM transmissions. In this mode there will be a slow rise and decay time.
- Page 5 VSWR MEASUREMENT Set the FUNCTION switch to the ‘SWR SET’ position. Set the radio transceiver to transmit mode. Slowly turn the SWR SET Control Knob clockwise until the meter point is at the ‘CAL t’ position. This should be full scale. Set the FUNCTION switch to the ‘SWR’...
- Page 6 Wired and tested PC board products are covered by this warranty provided on the wired and tested PC board product is returned. Wired and tested PC boards installed in the owner’s cabinet or connected to switches, jacks, or cables, etc. sent to MFJ Enterprises, Inc. will be returned at the owner’s expense unrepaired.
- Page 7 12. This warranty gives you specific rights, and you may also have other rights which vary from state to state.
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