Installation - LDG AT-1000PROII Operation Manual

INSTALLATION

The AT-1000ProII is intended for indoor use only; it is not water-resistant. If you use it
outdoors, (Field Day, for example) you must protect it from rain. The AT-1000ProII is designed
for use with coax-fed antennas. If use with longwires or ladder-line-fed antennas is desired, an
external balun rated to 1000 watts is required.
Place the AT-1000ProII in a convenient location near the transceiver and amplifier. Always
turn your radio and amplifier off before plugging or unplugging anything. The radio may be
damaged if cables are connected or disconnected while the power is on.
Connect the HF antenna jack on the amplifier to the TX jack on the back of the AT-
1000ProII, using a 50 ohm coax cable rated 1000 watts or higher.
Connect a 50-ohm antenna feedline coax to the ANT 1 jack on the back of the AT-
1000ProII, and optionally connect a second antenna feedline to the ANT 2 jack. NOTE: ANT 2
is automatically selected when no DC power is present. This way, if you only have one antenna,
it is automatically disconnected from your radio when the power is off.
The AT-1000ProII is designed to interface directly with many popular ICOM and Yaesu
transceivers, enabling one button tuning. In the case of ICOM radios, the supplied interface cable
also powers the tuner.
For ICOM radios supporting the AH-3 or AH-4 external tuner, connect the 4-pin Molex
connector of the optional IC-PAC ICOM interface cable to the radio's Tuner port. Then connect
the 1/8" stereo plug on the other end of the ICOM interface cable to the jack marked Radio on
the rear of the AT-1000ProII. Connect the coaxial DC power plug of the ICOM interface cable to
the 12V DC Power jack.
For Yaesu FT-857 and FT-897, use the optional Y-ACC cable and plug the red end marked
Radio into the transceiver's ACC port. Plug the black end of the Y-ACC cable into the jack
marked Radio on the rear of the AT-1000ProII.
Unless the AT-1000ProII is being powered by the ICOM radio interface cable as above,
you'll also need to plug in the supplied DC coaxial power cable. This cable has a 2.5x5.5mm
coaxial plug on the end. Plug the coaxial plug into the 12V DC Power jack on the rear of the
AT-1000ProII, and connect the other end to a DC power source between 11 and 16 volts DC,
capable of supplying up to 1A.
Grounding the AT-1000ProII tuner will enhance its performance and safety. LDG
recommends that you connect your tuner to a suitable ground. A common ground rod connected
to buried radials is ideal, but a single ground rod can provide a serviceable ground. LDG strongly
recommends the use of a properly installed, high quality lightning arrestor on all antenna cables.
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