MFJ-902/902H Travel Tuner
Instruction Manual
1
INTRODUCTION
The MFJ-902/902H Travel Antenna Tuner was specially compact-built for Icom
IC-706MKIIG, Yaesu FT-100, Kenwood TS-50, and other rigs with a built-in
SWR Meter.
You can operate 80 through 10 Meters -- anywhere with any transceiver -- use
any coax fed or random wire antenna. The 902H also has a 4:1 balun with
binding post for balanced lines. It’s great for mobile, base, backpack, etc. The
MFJ-902/902H handles 150 watts RF output and has a tuner bypass switch.
INSTALLATION
The MFJ-902/902H should be installed between the transmitter and antenna.
1. Locate the tuner in a convenient location at the operating position.
2. Use a 50 ohm coaxial cable to connect the transmitter or transceiver to the
SO-239 labeled TRANSMITTER on the back of the tuner.
3. Connect an antenna feed to the appropriate tuner output:
a.) COAX-FEED to the SO-239 connector labeled ANTENNA.
b.) RANDOM WIRE
MFJ-902: A random wire may be used by connecting to the center of
the SO-239 connector with the supplied plug.
MFJ-902H: Connect to the red binding post labeled WIRE.
The MFJ-902/902H
must be
grounded when using a random wire.
c.) BALANCED FEEDERS (MFJ-902H only) to the red binding posts
labeled BALANCED LINE. When using a balanced feedline, connect a
short jumper from the WIRE binding post to the closest balanced line
post (see labeling on back of unit).
4. Connect your tuner and transmitter to a good earth ground.
OPERATION
This tuner has a BYPASS/TUNE switch located on the back of the unit. Simply
place the switch toward the BYPASS labeling to completely bypass the tuning
circuit. Change the switch toward the TUNE labeling to place the tuning circuit
between the transmitter/transceiver and the antenna.
