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MFJ-933C
High-Efficiency Magnetic Loop Tuner
Instruction & Technical Manual
5
SYSTEM OPERATION
The most important aspect of using the MFJ-933C
High-Efficiency Magnetic Loop Tuner
™
is that
it creates opportunities for Hams to once again experiment while enjoying operating at the same
time. Imagine how exciting it can be to establish contact with a distant station using an antenna
that you designed for the first time! Even more so, what if you 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
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
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
Set up the MFJ-933C
High-Efficiency Magnetic Loop Tuner
™
as illustrated in Figure 6.
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Содержание MFJ-933C
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