LDG Electronics AT-100ProII Automatic Antenna Tuner 125W





AT-100ProII: The LDG AT-100ProII is the next step in the evolution of the automatic tuner. This desktop tuner covers all frequencies from 1.8-54Mhz, and will automatically match your antenna in no time.
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. The AT-100ProII 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. You can also start a tuning cycle manually whenever necessary.
Large, easy-to-read LED barographs show forward and reverse power in peak or average mode, and SWR. Two power scales are provided: 12.5 Watts and 125 Watts. The barographs also indicate tuner status and input confirmations.
The AT-100ProII uses LDG’s state of the art, processor-controlled Switched-L tuning network. It will match dipoles, verticals, inverted-Vees or virtually any coax-fed antenna. With an optional LDG balun, you can also use long wires 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.
The AT-100ProII uses latching relays which retain the tuned configuration indefinitely even when the unit is powered down. The latching relays also enable extremely low power consumption; when not actively tuning the AT-100ProII draws next to no power at all. This makes it suitable for portable or mobile operation from batteries.
125 Watts SSB/CW, 30W Digital
Easy to read LED bar-graph display for RF power, SWR, status. LED indicator for antenna selection and bypass.
4000 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, autotuning threshold and more.
1.8 to 54.0 MHz coverage. Built-in frequency sensor.
Tunes 6 to 1000 ohm loads (16 to 150 on 6M),.
For Dipoles, Verticals, Vs, Beams or and Coax Fed Antenna
Includes DC power cable. 5.5×2.5mm
Power requirements: 11 to 16 volts DC at 500 mA Max.
Small Size Enclosure: 7.5″ D x 5.5″ W x 2.0″ H Weight: 1.5 pounds.