⚡ Vine Antennas RST-ATU Mini Automatic Antenna Tuner
🔹 Overview
The Vine Antennas RST-ATU is a compact, intelligent automatic antenna tuner designed to provide seamless impedance matching across the 1.8–55 MHz frequency range. Built with a robust aluminium alloy housing and featuring a 0.96-inch OLED display, this tuner offers both durability and precision in one sleek, portable package.
Perfect for amateur radio operators, field deployments, and portable QRP setups, the RST-ATU automatically tunes without any control cables — simply connect it between your transceiver and antenna, and it does the rest ⚙️.
⚙️ Key Features
- ✅ Automatic Tuning – Tunes automatically from 1.8 MHz to 55 MHz with no control cables required.
- ✅ OLED Display – Bright 0.96-inch screen provides real-time tuning and status information 📺.
- ✅ USB Type-C Charging – Built-in Type-C charging port for easy recharging and firmware updates.
- ✅ High-Quality Build – Rugged aluminium alloy housing offers excellent corrosion resistance and strength 💪.
- ✅ Reliable Components – Uses 1000V high-voltage SMD capacitors and advanced PIC microcontroller design for stable operation.
- ✅ Up to 100W Operation – Handles transmit power up to 100 watts with fast tuning response.
- ✅ Accurate Power Measurement – Measures forward and reflected power with 10% accuracy.
- ✅ Compact & Lightweight – Perfect for field or portable setups, weighing very little while offering full ATU functionality.
- ✅ UHF Connector Interface – Standard UHF (SO-239) connector ensures compatibility with most radio equipment 🔌.
📊 Technical Specifications
| ⚙️ Specification |
💡 Details |
| Model |
Vine Antennas RST-ATU (ATU-100) |
| Frequency Range |
1.8 MHz – 55 MHz |
| Display |
0.96-inch OLED |
| Material |
Aluminium Alloy (Corrosion-Resistant) |
| Charging Port |
USB Type-C |
| Battery |
3.6V Lithium, 1350mAh |
| Charging Current |
1A |
| Maximum Operating Power |
100 W |
| Maximum Measured Power |
150 W |
| Minimum Tuning Power |
1 W (recommended ≥5 W) |
| Tuning Accuracy |
10% |
| Maximum Inductance |
8.53 μH |
| Minimum Inductor Step |
0.05 μH |
| Maximum Capacitance |
1869 pF |
| Minimum Capacitor Step |
10 pF |
| Connector Type |
UHF (SO-239) |
| Certification |
CE Certified |
⚡ Operating Notes
- ⚠️ Minimum tuning power is 5 watts — lower power may not initiate tuning.
- ⚠️ During tuning, keep transmit power below 30 watts to avoid damage. After tuning, up to 100 watts can be safely used.
- ⚠️ Requires 9–12V power input to operate. Power banks or low-voltage USB ports may not provide sufficient startup voltage.
🎒 What’s in the Box
- 📦 1 × RST-ATU Main Unit
- 🔌 1 × USB Type-C Cable
- 📖 1 × User Manual
🏕️ Perfect For
- 🌄 Portable HF / QRP Operation
- 🏠 Base Station or Shack Use
- 🚙 Mobile Installations
- 🧳 DXpeditions and Travel
- 🛰️ Amateur Radio Field Days and Portable Events
