Overview

LDG Electronics AT-600ProII Automatic Antenna Tuners

Today, more and more mid-sized amps with 500 watts of output are becoming popular. LDG Electronics AT-600ProII Automatic Antenna Tuners are designed for this new generation of power levels.

AT-600ProII tuners will handle up to 600 watts SSB and CW and 300 on RTTY (1.8-30 MHz) and 250 watts on 54 MHz. They feature LDG's state-of-the-art, processor-controlled Switched-L tuner. Their front panel bar graph meter, and the optional sweep-needle remote meter, displays all tuner and power readings.

AT-600ProII tuners will match virtually any kind of coax-fed antenna, including Yagis, dipoles, inverted Vs, slopers, loops… just about anything. They will typically match a 10:1 SWR down to 1.5:1 in just a few seconds. You can also use AT-600ProII tuners with end-feds, random wires, and antennas fed with ladder line just by adding a balun.

These tuners feature two antenna ports with a front-panel indicator showing which is in use, and separate memory banks for each antenna. Easy-to-read LED bar graph meters showing RF power, SWR and tuner status, tactile feedback control buttons, and an LED bypass indicator complete the user interface. As with most RF Sensing autotuners, AT-600ProII tuners will automatically tune with any rig without the need for accessory band-switching cables. An OPTIONAL antenna tuner radio interface cable automates transceiver control, if supported by your particular transceiver.

An optional Analog Remote Meter with 6 ft. connection cord provides a touch of Amateur tradition. Any power source from 11-16 Vdc may be used. The AT-600ProII tuners only draw up to 750mA.
Additional LDG AT-600ProII features include:

* 4,000 memories for instantaneous band changing
* 2-position antenna switch with memories for each position
* Tuning time: 0.5 to 6 seconds full tune, 0.1 second memory tune
* Optional antenna tuner radio interface cable available
* Built-in frequency counter for memory operation
* Tunes 6 to 800 ohm loads (16 to 150 ohms on 6M)
* DC power cable
* Weighs 3 lbs.

Note: For additional information, please look at the files under the "Documentation" tab.

If you power up with as much as 600 watts, LDG's got your back with the AT-600Pro tuners. LDG antenna tuners are recognized for their ease of use and reliability. Order your LDG Electronics AT-600ProII Automatic Antenna Tuners from DX Engineering.

Documentation