MFJ-933C
High-Efficiency Magnetic Loop Tuner
Instruction & Technical Manual
5.2
QUICK-START INSTRUCTIONS
Although careful and complete reading of the technical manual is certainly important when
receiving new equipment, successful operation of MFJ-933C
High-Efficiency Magnetic Loop
Tuner
™
can be achieved with minimum time and effort as long as certain and specific instructions
are followed. Strict adherence to any WARNINGS and CAUTIONS associated with personal
safety, coupled with following specific procedural steps can lead to a unique operating experience
in a very short time.
WARNING
DO NOT touch or come into contact with Loop Connectors or Loop
Antenna while transmitting
YOU CAN BE SERIOUSLY INJURED
NOTICE
It is imperative that the operator specifically follows the operating
instructions and complies with all CAUTIONS, WARNINGS, and FCC
Guidelines for Human Exposure to Radio frequency (RF) Electromagnetic
Fields.
Step 1
Place the MFJ-933C
High-Efficiency Magnetic Loop Tuner
™
at the chosen place of
operation, and connect either the wire loop to the wing nut terminals on the rear panel or the coax
loop to the SO-239 connectors on the side.
Step 2
Setup the MFJ-933C
High-Efficiency Magnetic Loop Tuner
™
as illustrated in Figure 6.
Step 3
Set the MFJ–933C controls to the following positions for the 14.2 MHz operation
(settings are approximate, but should be reasonable):
•
TUNING control to Position 4.5.
•
MATCHING control to Position 9.0.
Step 4
Tune the transceiver or receiver to the 20 meter band and frequency of interest and
adjust the MFJ-933C
High-Efficiency Magnetic Loop Tuner
™
controls for maximum noise and
S-Meter reading. The tuner will produce a peak when the exact position for the controls and
switches is found.
Step 5
Apply 10 to 20 Watts of power to the MFJ–933C and adjust the TUNING and
MATCHING controls for minimum SWR on your external SWR/Wattmeter. Readjust the
controls until you see no further improvement in minimum SWR.
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Summary of Contents for MFJ-933C
Page 18: ...USER NOTES ...
