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Summary of Contents for MFJ MFJ-868
- Page 1 Model MFJ-868 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. 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 MFJ-868 measures peak or average forward and reflected power as well as standing wave ratio. It is designed to operate on 1.8-30 MHz. The MFJ-868 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.
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Page 4: Installation
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-1312B 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-868 Giant SWR/Wattmeter Instruction Manual Power Measurement Scales 1. The MFJ-868 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-868 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-868 Giant SWR/Wattmeter Instruction Manual Calibration The MFJ-868 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-868 Giant SWR/Wattmeter Instruction Manual Transmitter/ Standard MFJ-868 50-Ohm Reference Giant Transceiver Dummy Load SWR/ Wattmeter Wattmeter Figure 3: Calibration Setup 20W TRIMPOT SWR/PWR REF/FWD ON/OFF PEAK/AVG switch SWR/SET switch switch switch 200W TRIMPOT 2000W TRIMPOT 20W / 200W / 2KW...
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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-868 Giant SWR/Wattmeter Instruction Manual Schematic...
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Page 11: Full 12-Month Warranty
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-868 Manual 300 Industrial Park Road Version 1A Starkville, MS 39759 Printed In U.S.A.
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