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Top » Catalog » LDG ELECTRONICS » Automatic Antenna Tuners » AT-100ProII » LDG AT-100ProII 100W Automatic Antenna Tuner

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The AT-100ProII provides fully- and 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 tuners you may have considered, including the built-in tuners on many transceivers.

The AT-100ProII uses latching relays and other power-saving techniques to consume very little power when not tuning, making it suitable for battery-powered operation.


1.0 to 125 watt power range (SSB and CW), 100W on 6M.
Latching relays for ultra low power operation.
4,000 memories for instantaneous band changing.
Built-in 2-port antenna switch, with 2,000 memories each.
Tuning time 0.2 to 5 seconds full tune, 0.2 seconds memory tune.
1.8 to 54.0 MHz coverage. Built-in frequency sensor.
Tunes 6 to 1,000 ohm loads (16 to 150 on 6m).
LED bargraph displays power level, SWR, and status.
Antenna Indicator LEDs show the currently selected antenna.
User-selectable operating parameters: Auto/Semi, 125/12.5 watt scale, and more.
DC power cable included.
Power requirements: 11 to 16 VDC @ 500mA max. 7mA when idle.
Dimensions: 7.5 x 5.5 x 2.0.
Weight 1.5 pounds.

Note: All LDG tuners come with a two year fully transferable warranty.

This product was added to our catalog on Friday 21 December, 2018.
RW ANTENNA STORE ~ 716-434-9216 ~ 6150 Crosby Rd. ~ Lockport, N.Y. 14094 ~ Email: