MFJ MFJ-1703 User Manual

MFJ-1703 Antenna/Transceiver RF Safety Switch

The MFJ-1703 is an antenna-to-transceiver switch designed to help protect your radios by ensuring both
radios are always connected to an antenna.

OPERATION

The MFJ-1703 uses SO-239 for radio and antenna connections. Connect one antenna to 1 and the other
antenna to 2. Connect one radio to A and the other radio to B.

The MFJ-1703 is an antenna-to-transceiver switch designed to safely permit an ANTENNA 1 to a
RADIO A and at the same time connecting an ANTENNA 2 to a RADIO B.

By moving the front-panel switch to the right, the connections are reversed: ANTENNA 1 to RADIO
B, and ANTENNA 2 to RADIO A.

In either switch position, both radios are always connected to an antenna.

WARNING: Never transmitter while changing the switch position!

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 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, 300 Industrial Park Road, MS 39759; by 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.