Introduction; Jumpstart, Or "Real Hams Don't Read Manuals - LDG IT-100 Operation Manual

INTRODUCTION

LDG pioneered the automatic, wide-range switched-L tuner in 1995. From its laboratories in
St. Leonard, Maryland, LDG continues to define the state of the art in this field with innovative
automatic tuners and related products for every amateur need.
Congratulations on selecting the IT-100 100-watt automatic tuner for Icom transceivers. The
IT-100 provides semi-automatic antenna tuning across the entire HF spectrum plus 6 meters, at
power levels up to 125 watts. It will tune dipoles, verticals, Yagis, or virtually any coax-fed
antenna. It will match an amazing range of antennas and impedances, far greater than some other
tuners you may have considered, including the built-in tuners on many radios.
The IT-100 is similar to previous LDG tuners, but is specially engineered to integrate with
your Icom HF radio. The IT-100 connects to the external tuner port on the back of the radio. The
IT-100 takes advantage of this interface to simplify the tuning process -- one button push is all
that is needed in order to complete a tuning cycle!
The IT-100 is powered by the transceiver's tuner interface itself. There is no additional
power cable required to use the IT-100. Latching relays are used, so the IT-100 consumes no
power when not tuning.

JUMPSTART, OR "REAL HAMS DON'T READ MANUALS!"

Ok, but at least read this one section before operating the IT-100:
Turn off power to your Icom radio.
Connect the HF/50 MHz antenna jack on the transceiver to the "TX" jack on the IT-100, using a
50 ohm coax cable jumper.
Connect the 50 ohm coax antenna feedline to the "ANT" jack on the IT-100.
Connect one end of the supplied radio interface cable to the tuner port on the back of your radio.
Connect the other end of the supplied radio interface cable to the "Radio" jack on the back of the
IT-100.
Turn on the radio.
Select the desired operating frequency and mode.
Push and hold the TUNER/CALL button on the front of the radio for one second (until the
Tuning LED comes on), then release. The transceiver automatically keys up with a minimal
amount of power, and the IT-100 begins a tuning cycle. At the end of the tuning cycle, the
original mode and power level is restored.
Wait for the tuning cycle to end; you're now ready to operate!
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