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MFJ-4416B Super Battery Booster
Instruction and Technical Manual
10
EASY START INSTRUCTIONS
1. Prepare input and the output cables for the MFJ-4416B. It is recommended to use #12
or larger wire for both the input and output cables. The MFJ-5535M cable is available
for the output side for use with most HF radios, and the MFJ-5512 M cable is available
for most VHF/UHF radios.
2. Prior to connecting the radio and battery, plug the input and the output cables in to the
MFJ-4416B and ensure the polarity is correct.
3. If using the RF sense feature, you need to tap into your antenna lead. Normally this is
accomplished with a UHF “T” connector. You will also need a cable to go from the “T”
connector to the MFJ-4416B. This cable should be less than 1/16
th
wavelength long at
your highest frequency of operation.
4. Plug the output of the MFJ-4416B into your radio and then attach the input to your
battery.
5. You are now ready to operate. If not using the RF sensed switching, depress
the enable switch.
IN CASE OF DIFFICULTY
[ ] Low Voltage Disconnect trips under high demand conditions. This can be caused by
2 things. First ensure your battery is charged. A discharged battery will recover voltage
under low current conditions, but once current is drawn it will immediately drop below
the cutout voltage. Second, ensure the wiring on the input side of the unit is adequate for
the current being drawn and the lengths of the cable run.
[ ] Enable LED fails to illuminate. Ensure that you are either feeding RF from the radio
into the unit or the Enable/Disable switch is depressed.
TECHNICAL ASSISTANCE
If you have any problem with this unit first check the appropriate section of this manual.
If the manual does not reference your problem or is your problem is not solved by
reading the manual, you may call
MFJ Technical Service
at
662-323-0549
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 technician may
ask.
You can also send questions by mail to MFJ Enterprises, Inc., 300 Industrial Park Road,
Starkville, MS39759; by Facsimile (FAX) to 662-323-6551; or by email to
[email protected]. Send a complete description of your problem, an
explanation of exactly how you are using your unit , and a complete description of your
station.
