This manual introduces the functions and use of LDG AT-1000ProII 1000W Automatic Antenna Tuner.
The LDG Electronics AT-1000ProII is a fully- and semi-automatic switched-L tuner designed to handle up to 1000 watts of output power across the HF spectrum plus 6 meters. It features built-in antenna switching with 2,000 memories per port and can tune loads ranging from 6 to 1,000 ohms (or 6 to 4,000 ohms with an optional balun). The unit includes LED bargraph displays for power level, SWR, and status indicators.
Operation is controlled via eight front panel buttons that support momentary, medium, and long press functions to access various modes such as manual tuning, memory store, and bypass. The device supports user-selectable parameters including Auto/Semi-automatic operation and 1kW/100W watt scales. Optional radio interfaces are available for ICOM, Yaesu, and Alinco transceivers.
| Transmit Power Rating (1.8 to 30 MHz, SSB) | 1000 watts |
|---|---|
| Transmit Power Rating (50-54 MHz) | 250 watts, all modes |
| Frequency Coverage | 1.8 to 54.0 MHz |
| Tuning Load Range (HF) | 6 to 1,000 ohms |
| Antenna Memories per Port | 2,000 memories each |
| Power Requirements | 11 to 16 VDC @ 1A max |
The tuner is rated for 1000 watts of transmit power in Single Side Band mode from 1.8 to 30 MHz.
The unit has a built-in 2-port antenna switch with 2,000 memories for each port.
The distance to the nearest power line should be at least twice the length of the longest antenna, transmission line, or support dimension.