MFJ MFJ-1706, MFJ-1706H User Manual

MFJ-1706/1706H 6-Position Balanced Line Antenna Switches

Thank you for purchasing an MFJ
balanced feedline antenna switch. They
provide easy switching of antennas
without swapping wires. They can be used
with any type of balanced feedline and are
rated at full legal amateur radio power.
The model MFJ-1706 uses banana-type
binding posts; the model MFJ-1706H uses
ceramic feedthrough screw terminal
connectors with wing nuts. Both single
and dual banana plugs are available from
MFJ for use with the Model MFJ-1706.

Caution: Use care when connecting balanced feedlines to screw terminals to

avoid short circuits.

TYPICAL INSTALLATION:

Between one balanced-line antenna tuner and several balanced-line antennas.

Connect the antenna connector of an antenna tuner to the antenna switch COM terminals with a
short length of balanced line. Connect the radio connector of an antenna tuner to the radio with a
short length of 50-ohm coax. Connect one balanced line antenna per pair of numbered post on
the back of the switch. The antenna tuner must be adjusted individually for each antenna.

WARNING: Never switch antennas while keying the transmitter.

TECHNICAL ASSISTANCE

If you have any problems with this unit first check the appropriate section of this manual. If the
manual does not reference your problem or 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 technicians may ask.

You can also send questions by mail to MFJ Enterprises, Inc., 300 Industrial Park Road,
Starkville, MS 39759; by facsimile (FAX) to 662-323-6551; or by email to
[e-mail]. Send a complete description of your problem, an explanation of
exactly how you are using your unit, and a complete description of your station.