LDG AT100ProII HF Automatic Antenna Tuner is a versatile device designed for amateur radio enthusiasts, covering a frequency range from 1.8 to 54 MHz. This tuner boasts an impressive automatic matching capability, allowing it to quickly adapt to various antennas with minimal user intervention. Enhanced features include LED indicators for antenna selection and bypass status, as well as a two-position antenna switch that enables seamless transitions between two connected antennas. The tuner operates efficiently with just 1 watt, yet it can handle power levels up to 125 watts, making it suitable for both low-power QRP operations and standard 100-watt transceivers.
One of the standout features of the AT100ProII is its extensive memory capability, which includes 2,000 memories for each antenna. This allows the tuner to automatically store tuning configurations for different frequencies and bands, ensuring quick retuning when operating on previously used frequencies. The built-in frequency sensing circuitry enhances its functionality by enabling the tuner to recognize the current operating band and frequency, resulting in rapid adjustments. The LED bar-graph display provides real-time feedback on RF power and SWR, while a dedicated Function key grants access to additional operational data.
The AT100ProII is engineered with durability and user-friendliness in mind. Its latching relays maintain the tuned configuration even when the device is powered down, ensuring reliability during use. The tuner is compatible with a wide range of antenna types, including dipoles, verticals, and inverted-V configurations, and can be paired with an optional LDG balun for longwire or ladder-line antennas. With a compact size of 7.5” x 5.5” x 2.0” and a lightweight design of just 1.5 pounds, the AT100ProII is an excellent choice for both portable and fixed station setups, making it a valuable addition to any amateur radio operator’s equipment.
