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Model MFJ-868B
Giant
MFJ
True Peak-Reading SWR/Wattmeter
MODEL
MFJ-868B
1.8-60MHz
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
2013 MFJ ENTERPRISES, INC.
C
VERSION 1A
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Summary of Contents for MFJ MFJ-868B
- Page 1 Model MFJ-868B Giant True Peak-Reading SWR/Wattmeter MODEL MFJ-868B 1.8-60MHz 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 2013 MFJ ENTERPRISES, INC. VERSION 1A...
- Page 2 Customers using this manual should report errors or omissions, recommendations for improvements, or other comments to MFJ Enterprises, 300 Industrial Park Road, Starkville, MS 39759. Phone: (662) 323-5869; FAX: (662) 323-6551. Business hours:...
- Page 3 The MFJ-868B measures peak or average forward and reflected power as well as standing wave ratio. It is designed to operate on 1.8-60 MHz. The MFJ-868B has three power scales, which are selected with the front panel slide switch. The high power scale measures 0-2000 Watts forward or reflected power.
- Page 4 2. The meter must have a power source in order to function. Power can be provided by an external 12 VDC supply such as the MFJ-1312D or an internal nine-volt “transistor radio” battery. Use a 2.1 mm coaxial plug with the center conductor positive and the sleeve ground.
- Page 5 MFJ-868B Giant True Peak Reading SWR/Wattmeter 1.8-60 MHz Instruction M Power Measurement Scales 1. The MFJ-868B Giant SWR/Wattmeter has three power scales. Refer to Figure 2 below for scale location and scale mark representation. 2. The meter’s full-scale forward and reflected power range is controlled by the 20W / 200W / 2kW slide switch.
- Page 6 SWR reading. SWR Measurement Scale 1. The MFJ-868B Giant SWR/Wattmeter has one standing wave ratio scale. Refer to Figure 2 above for scale location and scale mark representation. 2. On the SWR scale, each tall picket represents 0.5 units below the 2 picket and 1 unit above the 2 picket.
- Page 7 MFJ-868B Giant True Peak Reading SWR/Wattmeter 1.8-60 MHz Instruction M Calibration The MFJ-868B has been calibrated at the factory. If it should ever need to be recalibrated, then follow this procedure: Equipment Needed 1. Transmitter capable of supplying enough power to obtain ½ to full-scale reading at 14 or 21 MHz.
- Page 8 MFJ-868B Giant True Peak Reading SWR/Wattmeter 1.8-60 MHz Instruction M Transmitter/ Standard MFJ-868B 50-Ohm Transceiver Reference Giant Dummy Load Wattmeter SWR/ Wattmeter Figure 3: Calibration Setup 20W TRIMPOT PEAK/AVG SWR/PWR REF/FWD ON/OFF SWR/SET switch switch switch switch 200W TRIMPOT 2000W TRIMPOT...
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Page 9: Technical Assistance
You can also send questions by mail to MFJ Enterprises, Inc., 300 Industrial Park Road, Starkville, MS 39759; by Facsimile (FAX) to 662-323-6551; or by email to techinfo@mfjenterprises.com. - Page 10 MFJ-868B Giant True Peak Reading SWR/Wattmeter 1.8-60 MHz Instruction M Schematic...
- Page 11 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 12 MFJ-868B Manual 300 Industrial Park Road Version 1A Starkville, MS 39759 Printed In U.S.A.
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