LDG AT-100 PROII - Automatic Antenna Tuner

The LDG AT-100ProII covers 1.8-54 MHz, and features a two-position antenna switch allowing instant switching between two antennas. It requires just 1 watt for operation but will handle up to 125 watts, making it suitable for everything from QRP to a typical 100 watt transceiver.

Like most LDG tuners the AT-100ProII operates automatically, beginning a tuning cycle whenever the SWR exceeds a preset limit. It also features LDG’s advanced memory tuning, providing 2,000 memory locations; when tuning near a previously used frequency it will recall the settings for nearly instant tuning. It learns your favorite frequencies and bands as you use it.

It will match dipoles, verticals, inverted-Vees or virtually any coax-fed antenna. With an optional LDG balun, you can also use longwires or antennas fed with ladder-line. It handles 100 watts SSB or 50 watts FM/Digital when used with a solid-state transceiver; vacuum tube transmitters cut the power ratings about in half.

Please Note

When used with radios like the IC-7300,FTDX10 or TS-890 in bypass mode the tuner will pass 70MHz with minimal loss but will not tune at that frequency

Specification

• 1 to 125 watt power range (SSB and CW), 100W on 6M.
• Easy to read LED bar graph display for RF power, SWR and status.
• Over 4200 memories for instantaneous band changing.
• Two position antenna switch. Separate memories for each antenna.
• Tuning time: 0.5 to 6 seconds full tune, 0.2 sec memory.
• Selectable user parameters: Auto/Semi, 125/12.5 watt scale, power save and more.
• 1.8 to 54.0 MHz coverage. Built-in frequency sensor.
• Tunes 6 to 1000 ohm loads (16 to 150 on 6M)
• Interfaces with Icom and Yaesu with optional cables.
• Small Size Enclosure: 7.5"D x 5.5"W x 2.0"H.
• Weight: 1.5lbs