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MFJ-267 Calibration Procedure

Solution
mfj-267 calibration procedure:
items needed: 100 watt output exciter, minimum 500 watt output amplifier, bird wattmeter, external dummy load, mfj-267, and tuning wand.
 
CONNECT AS SHOWN:
Exciter - Amplifier - Wattmeter - MFJ-267 - Dummy Load
 
1.  Remove cover from mfj-267.
2.  Set switch on back of mfj-267 to antenna position.
3.  Set high/low power switch to Low (out).
4.  Set output to 100 Watts on bird meter.
5.  Adjust R120 so that mfj-267 reads 100 Watts.
6.  Set high/low power switch to High (in).
7.  Set output to 500 Watts on bird meter.
8.  Adjust R108 so that meter on the mfj-267 reads 50 Watts.  When in the high power position, all readings on the meter scales are multiplied by 10 so this is actually 500 Watts.
9.  Unkey transmitter. 
10. Reverse the coax connections on the 267, by connecting the line from the wattmeter to the antenna connection, and the line from the dummy load to the input connection.
11. Set the high/low power switch to High (in).
12. Set output power to 200 Watts on the bird meter.
13. Adjust R101 so that the reflected meter on the 267 reads 20 Watts.  When in the high power position, all readings on the meter scales are multiplied by 10, so this is actually 200 Watts.
14. Unkey transmitter.
15. Set high/low power switch to Low (out).
16. Set output power to 20 Watts.
17. Adjust R119 so that the reflected meter on the 267 reads 20 Watts.
18. Unkey transmitter.
19. Return all gear to normal operating conditions.
Article details
Article ID: 75
Company: MFJ
Date added: 2017-01-12 14:35:34
Views: 34

 
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