MFJ MFJ-936C - Configuration

MFJ-936C Deluxe High-Efficiency Magnetic Loop Tuner Instruction & Technical Manual
are just using a few watts, and the antenna is just a few feet away from your operating position
inside your home?
5.1 DETAILED OPERATION INSTRUCTIONS
Operation is simple but must follow specific steps in a specific order. Moreover, you must have first
consulted Section 1 of this manual to ensure compliance with established standards for MPE to
certain levels of RF radiation.
WARNING
DO NOT touch or come into contact with Loop Connectors or Loop
Antenna while transmitting
YOU CAN BE SERIOUSLY INJURED
Step 1 Place the MFJ-936C Deluxe 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 Using non-conductive fasteners (plastic or wooden clothespins for example) form a loop
to enclose as much area as possible (i.e. clothespin a wire loop to a curtain around a window
frame). A circle encloses the maximum area. Otherwise, drape it across bookcases or similar
non-conductive objects to fashion a loop of sorts to use. If the loop antenna is rigid, then place it
in a position to accommodate its particular shape and size. The MFJ-57B or MFJ-58B make this
simple by providing a precut PVC frame and wire lengths.
Step 3 Setup the MFJ-936C Deluxe High-Efficiency Magnetic Loop Tuner™ as illustrated in
Figure 6.
Step 4 Set the controls to the following positions:
• TUNING control to Position 0.
• MATCHING control to Position 10.
• METER SENSITIVITY control to the fully counterclockwise position.
Step 5 Tune the transceiver to the desired frequency then adjust the controls for maximum noise
and S-Meter reading. The tuner will produce a peak in both when the proper positions for the
controls are achieved. The recommended process consists of the following steps:
• Slowly rotate the TUNING control clockwise while listening for a peak until you reach
Position 5.
• If no peak is found, re-position the TUNING control to Position 0.
• Rotate the MATCHING control counter-clockwise one step to Position 9.
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