MFJ MFJ-867 Manual Download Page 8 | Manualshive

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MFJ MFJ-867 Manual Download Page 8

MFJ-868B Giant True Peak Reading SWR/Wattmeter 1.8-60 MHz

Instruction M

6

Figure 3: Calibration Setup

Figure 4: Trim pot location (inside view)

Transmitter/

Transceiver

Standard

Reference

Wattmeter

MFJ-868B

Giant

SWR/

Wattmeter

50-Ohm

Dummy Load

20W / 200W / 2KW

switch

PEAK/AVG

switch

SWR/PWR

switch

REF/FWD

SWR/SET

switch

ON/OFF
switch

20W TRIMPOT

200W TRIMPOT

2000W TRIMPOT

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Summary of Contents for MFJ-867

Page 1: ...re 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 Model MFJ 868B VERSION 1A MODEL MFJ 868B MFJ True Peak Reading SWR Wattmeter 1 8 60MHz Giant ...

Page 2: ...port 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 M F 8 4 30 CST NOTE The meter must have a power source in order to function Power can be provided by an external 12 VDC supply negative ground only or an internal nine volt transistor radio battery IMPORTANT W...

Page 3: ...klit Meter 6 5 in measured diagonally across the front Easy to Read Scales Large numbers and pickets make reading a breeze Power Saver Circuit Meter turns on only when transmitting Three Power Scales 20 200 2000 Watt power scales Forward and Reflected Measures forward power and reflected power Peak or Average Reading Measures Peak or Average power Power or SWR Measures Power and SWR Easy to Set SW...

Page 4: ...xial plug with the center conductor positive and the sleeve ground The ON OFF switch turns the unit and internal lamp on or off 4 To measure the power output capability of a transmitter amplifier you should connect a quality 50 ohm dummy load to the ANTENNA connector of the MFJ 868B Operation Power Measurement Settings 1 Set the SWR PWR switch to PWR out for power measurement 2 Set the REF FWD swi...

Page 5: ...0 Watts of output power push the slide switch all the way to the right for the 2000 Watt scale 3 On the 2kW scale each tall picket scale mark represents 100 Watts below the 500 Watt picket and 500 Watts above the 500 Watt picket The short pickets represent 50 Watts below the 500 Watt picket and 100 Watts above the 500 Watt picket 4 On the 200W scale each tall picket represents 10 Watts below the 5...

Page 6: ... the SET position on the SWR scale 5 Set the SWR SET switch to the SWR in position while transmitting The meter will now indicate the standing wave ratio Note The SWR SET knob must be reset when the power level is changed As you increase the power the knob will need to be turned counter clockwise towards MIN This will maintain an accurate SWR reading SWR Measurement Scale 1 The MFJ 868B Giant SWR ...

Page 7: ...wn in Figure 3 Use a 50 ohm dummy load for the antenna Set the Transmitter to the 14 MHz in the 20 meter band 3 With the 20W 200W 2kW switch on the 20 Watt scale transmit 20 Watts as indicated on the reference meter Adjust the 20 trim pot on the inside board to set the forward power scale to 20 Watts Refer to Figure 4 for trim pot location 4 With the 20W 200W 2kW switch on the 200 Watt scale trans...

Page 8: ... Calibration Setup Figure 4 Trim pot location inside view Transmitter Transceiver Standard Reference Wattmeter MFJ 868B Giant SWR Wattmeter 50 Ohm Dummy Load 20W 200W 2KW switch PEAK AVG switch SWR PWR switch REF FWD SWR SET switch ON OFF switch 20W TRIMPOT 200W TRIMPOT 2000W TRIMPOT ...

Page 9: ...2 323 0549 or the MFJ Factory at 662 323 5869 You will be best helped if you have your unit manual and all information on your station handy so you can answer any questions the technicians may ask 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 Send a complete descrip...

Page 10: ...MFJ 868B Giant True Peak Reading SWR Wattmeter 1 8 60 MHz Instruction M 8 Schematic ...

Page 11: ... provided to cover postage and handling 4 This warranty is NOT void for owners who attempt to repair defective units Technical consultation is available by calling 662 323 5869 5 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 6 Wired and tested PC board products are covered by this warranty provided only the wired and tested PC board product is returned Wired a...

Page 12: ...MFJ 868B Manual Version 1A Printed In U S A 300 Industrial Park Road Starkville MS 39759 ...

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