MFJ-4113TR Instruction Manual
TX/RX SWITCH
1
MFJ-4113TR BIAS-TEE WITH TX/RX SWITCH
Introduction
The MFJ-4113TR is designed to allow connection of a receive only antenna to
your antenna system in addition to the transmitte antenna. It is also used for
MFJ-1886TR receive loop antenna and similar antennas. A key line connection
to the transiever switches the receive antenna out of the circuit when the radio
goes into transmitte mode. DC bias current is also applied to the coax
connection for the loop antenna when in receive mode. During transmit, the bias
current is removed from the receive antenna.
CONNECTIONS
12VDC
Connect your power supply for the MFJ-4113TR to this jack. The power
requrirments for this unit are 12 volts DC at 500ma. If your using this unit with
the MFJ-1886 LOOP, use the power supply that came with the loop. The loop
power supply is non-switching and produces less noise.
TRANSCEIVER
Use a coax jumper (not supplied) to connect this to your transceiver.