Introducció
The EBTOOLS ATU-100 is a mini automatic antenna tuner designed for radio equipment operating within the 1.8-55 MHz frequency range. It features a 0.96-inch OLED display, a Type-C charging port, and utilizes high-quality 1000V high-voltage SMD capacitors and advanced chips for stable and practical performance. This tuner is housed in a durable aluminum alloy casing and includes a UHF connector. It automatically tunes without the need for external control wires, making it suitable for various radio stations.

Davant view of the ATU-100 Mini Automatic Antenna Tuner, displaying its OLED screen, TUNE button, and POWER button. The screen shows power (PWR), Standing Wave Ratio (SWR), inductance (L), and capacitance (C) values.
Informació de seguretat
- Always ensure proper grounding for your radio equipment to prevent electrical hazards.
- Do not operate the antenna tuner in wet conditions or expose it to extreme temperatures.
- When tuning, avoid touching antenna connections or the tuner itself to prevent RF burns.
- Ensure the radio's output power is set correctly before tuning to prevent damage to the tuner or other equipment.
- Mantingueu el dispositiu allunyat de camps magnètics forts.
Instruccions de configuració
Follow these steps to set up your ATU-100 antenna tuner:
- Connexió d'equips: Connect your radio, the ATU-100 Antenna Tuner, and your antenna in series. The radio's output should connect to the tuner's input (RFIN), and the tuner's output (ANT) should connect to your antenna.

posterior view of the ATU-100 tuner, highlighting the ANT (Antenna) and RFIN (Radio Frequency Input) UHF connectors for proper connection.
- Configuració inicial de potència: Per al primer ús, configureu la potència de sortida de la ràdio o l'alimentador amplifier between 20-30W. Warning: High power tuning may damage the antenna tuner.
- Mode de ràdio: Set your radio to FM mode for tuning.
- Selecció de freqüència: Select the desired antenna frequency band.
- Encès: Press the POWER button on the ATU-100 to turn it on.

A dalt view of the ATU-100 tuner, illustrating the Type-C charging port, charge indicator, TUNE button, and POWER button.
Instruccions de funcionament
Once set up, operate the ATU-100 as follows:
- Observe Initial SWR: With your radio set to FM mode and 20-30W power, press the radio's PTT (Push-To-Talk) button. Observe the PWR (Power) and SWR (Standing Wave Ratio) values displayed on the ATU-100's OLED screen.
- Procés d'afinació:
- Restablir: A short press (less than 1 second) of the ATU TUNE button will reset the tuner.
- Ajustar: A long press (more than 1 second) of the ATU TUNE button initiates the automatic tuning process.
- Evaluate SWR:
- If the SWR displayed is greater than 2.0, it indicates that the antenna is detuned and requires tuning. Press and hold the ATU TUNE button to begin tuning and observe the SWR value as it adjusts.
- If, after tuning, the SWR remains greater than 3.0, the antenna is severely detuned. In such cases, it is not recommended to use power above 30W. The transmit power should be controlled below 30W to prevent damage.
- If tuning successfully reduces the SWR to less than 2.0, you can then safely use the maximum power of 100W.
Manteniment
The ATU-100 Mini Automatic Antenna Tuner is designed for durability and requires minimal maintenance.
- Neteja: Feu servir un drap suau i sec per netejar l'exterior del dispositiu. Eviteu utilitzar productes de neteja o dissolvents abrasius.
- Emmagatzematge: Store the tuner in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Càrrega de la bateria: The device includes a 3.6V 1350MAH lithium battery. Charge it using the Type-C USB port with a 1A charging current. Ensure the battery is charged periodically if stored for long durations to maintain its health.
- Inspecció del connector: Periodically check the UHF connectors for any signs of corrosion or damage. Ensure they are securely fastened.

The included USB Type-C cable used for charging the ATU-100's internal battery.
Resolució de problemes
This section addresses common issues you might encounter with your ATU-100.
- High SWR (Standing Wave Ratio) after Tuning:
If the SWR remains above 2.0 after a long press of the TUNE button, it indicates a significant mismatch with your antenna. If it's above 3.0, the antenna is severely detuned. Consider the following:
- Condició de l'antena: Inspect your antenna for physical damage, loose connections, or corrosion.
- Tipus d'antena: Ensure your antenna is suitable for the frequency band you are operating on.
- Problemes de cable: Check your coaxial cables for damage or improper connections.
- Reducció de potència: If SWR is persistently high (above 3.0), reduce your radio's transmit power to below 30W to prevent damage to the tuner and radio.
- Sintonitza: Try resetting the tuner with a short press of the TUNE button, then initiate a long press to retune.
- Tuner Not Powering On:
- Càrrega de la bateria: Ensure the internal lithium battery is sufficiently charged. Connect the Type-C USB cable to a power source.
- Botó d'encesa: Confirm the POWER button is fully pressed.
- Lectures inexactes:
- Potència mínima: Ensure the minimum power to start tuning is at least 1 Watt. The minimum measurable power is 0.1 Watt.
- Passos de mesura: For power up to 10W, measurement steps are 0.1W. For robust measurements, ensure power is at least 1 Watt.
- Precisió de potència: The power measurement accuracy is 10%.
Especificacions
| Característica | Especificació |
|---|---|
| Tipus d'element | Sintonitzador d'antena |
| Material | Aliatge d'alumini |
| Model | ATU-100 |
| Mostra | OLED de 0.96 polzades |
| Freqüència de funcionament | 1.8-55 MHz |
| Model de bateria | Bateria de liti de 3.6 V i 1350 mAh |
| Corrent de càrrega USB | 1A |
| Potència màxima de funcionament | 100W |
| Potència màxima mesurada possible | 150W |
| Minimum Power to Start Tuning | 1W |
| Potència mínima mesurada possible | 0.1W |
| Measurement Steps (Power up to 10W) | 0.1W |
| Precisió de mesura de potència | 10% |
| Maximum Inductance | 8.53uH |
| Minimum Inductor Installation Step Size | 0.05 µH |
| Capacitat màxima de muntatge | 1869 pF |
| Capacitor Minimum Installation Step | 10 pF |
| Connectors | UHF |
| Dimensions del paquet | 8.27 x 5.12 x 2.36 polzades |
| Pes de l'article | 1.15 lliures |
Informació de la garantia
Specific warranty details for the EBTOOLS ATU-100 Mini Automatic Antenna Tuner are not provided in the product information. Please refer to the retailer or manufacturer's official weblloc web per consultar la política de garantia més actualitzada.
Atenció al client
For technical assistance, troubleshooting beyond this manual, or inquiries regarding your EBTOOLS ATU-100, please contact your point of purchase or visit the official EBTOOLS weblloc de recursos de suport.
You can visit the EBTOOLS Store on Amazon: Botiga EBTOOLS




