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ATU-100 ATU100 1.8-50MHz DIY Automatic Antenna Tuner by N7DDC – 7×7 with Firmware
Key Highlights
- Wideband coverage: 1.8 MHz to 50 MHz – perfect for HF, VHF, and UHF bands.
- Fully automatic tuning with 7×7 matching network for optimal SWR.
- Compact DIY kit with all necessary components and detailed instructions.
- Includes firmware for easy firmware updates and advanced tuning algorithms.
- Robust PCB layout and high‑quality components for reliable performance.
- Compatible with all major transceivers and antenna setups.
Features & Benefits
Designed by experienced ham radio operator N7DDC, the ATU-100 delivers professional‑grade tuning in a convenient, ready‑to‑assemble kit. Its 7×7 matching network offers superior impedance matching, reducing losses and protecting your transceiver. The integrated firmware provides automatic calibration and real‑time SWR monitoring, ensuring optimal performance with minimal user intervention.
What’s Inside the Kit
- Pre‑etched 7×7 matching network PCB
- High‑quality inductors, capacitors, and resistors
- Microcontroller board with firmware flash module
- Power supply adapter (5 V/2 A)
- Comprehensive wiring harnesses
- Step‑by‑step assembly guide and wiring diagram
Installation & Setup
Assembly takes less than an hour for an experienced hobbyist. Connect the tuner to your transceiver via the supplied SMA connectors, power it with the included adapter, and flash the firmware using the USB interface. Once powered, the tuner automatically scans the 1.8–50 MHz range, adjusts the matching network, and displays the SWR on the built‑in LCD.
Why Choose the ATU-100?
Whether you’re a seasoned hams or a DIY enthusiast, the ATU-100 offers:
- Unmatched tuning accuracy across a broad frequency range.
- Easy upgradability via firmware updates.
- Reliable build quality with proven components.
- Cost‑effective solution compared to commercial tuners.
Specifications
Frequency Range: 1.8 MHz – 50 MHz
Matching Network: 7×7 (inductor/capacitor ladder)
Power Input: 5 V DC, 2 A
Dimensions: 150 mm × 70 mm × 40 mm
Weight: 0.8 kg
Firmware: Version 1.0.0 (updateable via USB)
Upgrade your rig with the ATU-100 Automatic Antenna Tuner – the ultimate blend of performance, flexibility, and DIY spirit.
Price: Original price was: $ 58.77.$ 29.38Current price is: $ 29.38.