MFJ -924 Quick Start Manual

MFJ-924 440
Thank you for purchasing the MFJ-924 440 MHz UHF Antenna
Tuner. It will handle up to 300 watts PEP of output power. It
is designed to match a wide range of impedances for coax fed
antennas. SWR/WATT meter is built-in.
1. Connect your coax line fed antenna to the coax connector on
the MFJ-924 marked ANTENNA.
2. Connect a short coax line from the coax connector on the
MFJ-924 marked TRANSMITTER to the antenna connector of
your transceiver.
3. Connect a ground wire from the GROUND wing nut of the
MFJ-924 to the transceiver ground or earth ground of
your station.

SWR/WATT Meter

1. SWR Measurement:

a. Set the push button switch to SET posit/ n (TN).
b. Transmit a continuous carrier and set the SWR/POWER
control for a full scale meter deflection.
c Set the push button switch to SWR position (OUT) and

2. Power Measurement:

a. Set the push bottom switch to SET position (IN).
b. For 30 watts range -- rotate the SWR/POWER control to
the 30
watt scale.
c. For 300 watts range range -- rotate the SWR/POWER
control to the 300 mark and read the power level on
the 300 scale.
:
Note The SWR/POWER control on the MFJ-924 is factory
calibrated for the 30 watts range. Do not reset the
knob on
tolerance when precision reading is desired, the 300
watt range can be re-calibrated as follows:
a. Set the push button switch to SET position (IN).
b. Rotate the SWR/POWER control to the 30 mark and read
the power level on the 30 watt scale.
MHz UHF ANTENNA TUNER

INSTALLATION

OPERATION

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