Automatic antenna tuner promising fast, reliable matching across HF bands. Portable operators gain confidence from quick retuning and a compact, rugged housing. Is the Malahit ATU-100 Antenna Tuner the right choice for field use and powerbank operation?
⚡ At a Glance
- • Tuning Performance: Fast, accurate matching across 1.8–50 MHz with automatic control
- • Best for: Portable HF operators and amateur radio enthusiasts needing quick setup
- • Not ideal for: Users who require a battery-powered standalone tuner out of the box
Automatic matching is handled by firmware programmed to N7DDC specifications. Aluminium housing and compact dimensions suit field deployment and portable stations.
Fast, accurate matching – thanks to N7DDC automatic tuning with firmware 3.2
Firmware version 3.2 has been preprogrammed and fixes bugs present in earlier releases, running the automatic tuning routines developed by N7DDC. The unit is supplied assembled and ready to use with that firmware already installed.
Rapid, repeatable tuning across common HF bands reduces time spent adjusting antennas during field operations. Users report reliable matching across many HF frequencies.
Portable operation – with the included USB booster board converting 5V to 12V
A USB booster board is supplied that raises 5V USB power to 12V, and the 5.5 x 2.1 connector is soldered to the booster board for power input. The package includes a DC5.5 x 2.1 power cord and a USB cable for the booster.
Operation from a USB powerbank becomes feasible, making the tuner suitable for on-the-go setups and fieldwork. Normal mains-style power is not required in many situations, improving portability.
Durable, compact build – with aluminium alloy front and back panels and high-voltage components
The enclosure uses aluminium alloy for front and rear panels rather than PCB material, and internal parts include high-quality SMD capacitors, C-channel capacitors, 1000V high-voltage SMD capacitors and an imported PIC chip. A UHF connector is fitted for RF connections.
Compact, robust construction protects internals during transport and outdoor use. High-voltage components and quality parts support reliable operation under typical HF conditions.
✨ The 4 Key Reasons for Malahit ATU-100 Antenna Tuner
- Firmware 3.2 (N7DDC programmed) – Reduces tuning errors across multiple HF bands quickly.
- USB booster board (5V→12V) – Enables powerbank operation for portable field use without mains.
- Aluminium alloy housing – Compact, lightweight case protects internals during outdoor use.
- High-voltage SMD components and PIC chip – Handles higher voltages for safer, more reliable sessions.
📋 Technical Details at a Glance
- Category: Antenna Tuner
- Tuning Range: 1.8–50 MHz
- Firmware: Version 3.2 programmed by N7DDC
- Power Input: DC 5.5 x 2.1 connector
- Power Option: USB booster board (5V boosted to 12V)
❓ Frequently Asked Questions
Q: Can the tuner run from a USB powerbank?
A: Yes. An included USB booster board converts 5V to 12V so operation from a USB powerbank is possible, though external power is not normally required.
Q: Is a battery included with the tuner?
A: No, the unit is supplied without a battery and arrives assembled in its aluminium housing.
Q: What frequency range and power levels are supported?
A: Tuning covers 1.8–50 MHz, and the manufacturer warns that tuning may be insufficient below 5W.
🏆 Our Verdict
Ideal for portable HF operators and amateur radio enthusiasts who need quick, reliable antenna matching in the field. Firmware 3.2 programmed by N7DDC, quality internal components and a USB booster board combine to deliver dependable automatic tuning and powerbank compatibility. While the initial investment varies, robust construction and proven tuning behaviour make it a sensible long-term tool for serious field use.
