RT-600 Operations Manual
Version 1.0
3
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 RT-600 600-watt remote automatic tuner. The RT-
600 provides full- and semi-automatic antenna tuning across the entire HF spectrum
plus 6 meters, at power levels up to 600 watts peak. 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 RT-600 is similar to previous LDG tuners, but is weatherproof and can be
installed outdoors as near to the antenna as possible, reducing or eliminating coax
SWR losses. The tuner is powered over the coax feedline, so no additional cables are
required. The included RC-600 control unit provides DC power injection, as well as a
convenient on/off switch, power indicator, and a TUNE button.
Quickstart Guide
1.
Turn off power to your radio and amplifier.
2.
Connect the antenna jack on your amplifier to the “
Radio
” jack on the RC-
600.
3.
Connect the “
Tuner
” jack of the RC-600 controller to the “
Radio
” jack on the
RT-600 via a suitable coax feedline.
4.
Connect the antenna to the “
Ant
” jack on the RT-600.
5.
Connect a source of 12VDC, 1000mA to the
Power
jack on the RC-600, and
turn on your transceiver and amplifier. The power jack is center-positive.
6.
Bypass your amplifier; never tune with more than 100 watts.
7.
Begin transmitting; the tuner will automatically begin a tuning cycle if there is
an SWR mismatch.
8.
When tuning is complete, un-bypass your amplifier; you are ready to transmit.
The RT-600
mounts remotely
at the antenna,
eliminating coax
losses.
You should really
read the whole
manual, but this
summary will get
you started.
