Malahit ATU-100 Tiny Version ATU-10 QRP Automatic Antenna Tuner v1.6

Meet the Malahit ATU-100 Tiny Version ATU-10, a compact automatic antenna tuner built for QRP operators who value portability and reliable performance. Designed for input power from 1 to 15 watts, it pairs a simple, intuitive control scheme with precise matching to help you explore different bands and antenna options with ease. The tuner ships ready to use in a durable shell and includes a built in battery for portable operation.

Compact, ready to use design

The aluminum enclosure is CNC machined for a sleek, sturdy profile that fits in a small field kit or backpack. A 0.91 inch OLED display sits on the front along with a single control button, while the rear panel offers RF BNC connectors, a ground clamp, and an external control interface for streamlined control with your transceiver. The unit is designed to be assembled in the factory, allowing you to focus on tuning rather than setup.

Efficient, low power operation

Inside you will find high quality components chosen for stability and longevity. The PCB uses immersion gold, and critical capacitors are 500 V rated and of NPO type. The core material comes from BASF micron iron powder, known for low loss, while the relays are AXICOM latching types. The IM41 bistable relays hold their state without continuous power, so the tuner consumes energy mainly during active tuning and then rests quietly in standby.

Simple control and firmware

Control is straightforward. A short press resets the tuner and clears reactive elements to a neutral state; a long press enters tuning mode; a very long press shows the firmware version on the display. A built in battery backs the unit, and a USB Type-C port enables charging and firmware updates from a computer, keeping the device current with minimal fuss.

Firmware and features

The ATU-10 Tiny Version ships with firmware version 1.6, a compact platform developed by N7DDC that emphasizes portability without sacrificing useful matching capability. The machine includes a shell and is ready to operate out of the box, with a focus on stable performance in the field.

What you get and practical use cases

• ATU-10 Tyny QRP Automatic Antenna Tuner with shell and built in battery
• Rear panel with 50 ohm BNC RF connectors and a ground clamp
• 0.91 inch OLED display for at a glance tuning information
• USB-C port for charging and firmware updates
• Compact CNC machined aluminum case designed for field use

Why operators may choose Malahit ATU-100

Designed for field versatility, it is light enough for backpack setups and sturdy enough to withstand travel. The combination of a simple control scheme, a clear display, and reliable matching logic supports a wide range of antennas and setups, while keeping power draw practical in portable scenarios.