MFJ MFJ-1888, Instruction Manual, Page: 4 / 8

Wiring and Usage
1. Mount the antenna in a location away from power lines and transmit antennas. The loop can
be placed inside but the likelihood of picking up noise is increased because of all of the noise
sources inside the house.
2. Run the cable between the loop and the receiving location. Note the cable carries the DC
power to the preamp in the loop so any lightning protection must have a DC path through and
not short to ground.
3. Connect the cable from the loop to the ANT connector on the Multicoupler. Do not use an
antenna switch that shorts unused antenna ports to ground. The ANT connector has +12VDC
on it.
4. Connect the power adapter to the DC input and plug it into a 120VAC source.
5. The Multicoupler can handle up to 4 receivers. Connect the receiver to one of the receive
ports on the back. If using a transceiver with the MFJ-1888 make sure that you DO NOT
transmit into the Multicoupler. If your radio has a receive only connector then connect the
Multicoupler to that port. If your radio has multiple antenna connectors make sure your radio
switches over to the transmit antenna when transmitting before connecting to the
Multicoupler.
Schematics
Outdoor Unit