Operating instructions

MFJ-933 Loop Tuner

Instruction & Technical Manual

- 11 -

SYSTEM DESCRIPTION

The MFJ-933 Loop Tuner

Rear Panel connections function to permit

connecting the wire loop at the output, and connecting the coaxial line at the

input of the tuner. Refer to Figure 5 and the labeled component locations.

Figure 5 MFJ-933 Loop Tuner

Rear Panel Connections

The loop antenna connects to the Loop Connectors (1) with the two wing nuts

provided on the Loop Connector standoff rods. Care must be taken not to

disturb the wires leading from the lugs on the Loop Connector stand-off rods and

entering through the back of the tuner. These two Loop Connector connection

points must be kept clean at all times. To minimize contact resistance, the loop

wire is in direct contact with the low resistance soldered lug.

When not in use for periods of time, always clean the connectors before re-

attaching loop antennas of any kind. This unit is not intended for outdoor

installation except during portable operation and must be protected from the

elements.

Coaxial line connects to the SO-239 connector labeled Transmitter (2) providing

RF power input to the tuner. The WARNING label must be obeyed!