Malahit OOXM1618
Malahit ATU-100 Automatic Antenna Tuner 1.8-50 MHz 100W Shortwave User Manual
Uvod
This manual provides detailed instructions for the Malahit ATU-100 Automatic Antenna Tuner. This device is designed to automatically match the impedance of your antenna system to your transceiver, ensuring efficient power transfer across the 1.8-50 MHz frequency range with up to 100W of power. Please read this manual thoroughly before operating the device.
Sadržaj paketa
Provjerite jesu li sve dolje navedene stavke uključene u vaš paket:
- 1 x Assembled Malahit ATU-100 Automatic Antenna Tuner (metal casing, no battery included)
- 1 x DC 5.5 x 2.1 Power Cable (0.75 square pure copper wire, 50 cm length)
- 1 x USB 5V to 9V Booster Board

Image: The Malahit ATU-100 tuner, power cable, and USB booster board as packaged in the box.
Značajke proizvoda
- Firmware Version 3.2: Equipped with the latest firmware, version 3.2, which includes bug fixes and improvements over previous versions.
- Automatski rad: This antenna tuner operates automatically, requiring no manual assembly or complex setup. It is ready for immediate use.
- Kompaktan dizajn: The tuner features a compact and robust design with an assembled metal casing, making it durable and portable.
- Visokokvalitetne komponente: Built with high-quality SMD capacitors, C-channel capacitors, 1000V high-voltage SMD capacitors, and an imported PIC chip for reliable performance.
- UHF Connector: Utilizes standard UHF connectors for antenna and radio connections.
- Izdržljiva konstrukcija: The entire casing is made from CNC-perforated aluminum alloy, ensuring high durability.

Slika: prednja strana view of the ATU-100 tuner, showing the display, Tune button, Auto button, BYP button, and Power switch.
Postavljanje
- Priključak za napajanje: Connect the provided DC 5.5 x 2.1 power cable to the DC12V input port on the rear of the ATU-100. Ensure the power source provides 10-15 VDC. If using the USB 5V to 9V booster board, connect it to a 5V USB power source and then to the tuner's DC input.
- Antenski priključak: Connect your antenna to the "ANT" UHF connector on the rear of the tuner.
- Priključak primopredajnika: Connect your transceiver's antenna output to the "RF IN" UHF connector on the rear of the tuner.
- Uključivanje: Flip the red "POWER" switch on the front panel to the ON position. The display will illuminate.

Image: Rear panel of the ATU-100, illustrating the antenna (ANT), DC 12V power input, and RF input (RF IN) connections.
Načini rada
The ATU-100 features several operating modes:
- Automatski način rada: When a dot ('.') appears on the display, the tuner is in automatic mode. In this mode, the tuner automatically adjusts to achieve the lowest SWR.
- Bypass (BYP) Mode: When a dash ('_') appears on the display, the tuner is in BYP mode, meaning it is bypassed and not actively tuning.
- Ručni način rada: When both the dot and dash disappear from the display, the tuner is in manual mode, allowing for manual adjustments.
Proces podešavanja:
- Ensure the tuner is powered on.
- Transmit a low power signal (e.g., 5-10W) from your transceiver.
- Pritisnite zeleno UGODITE button. The tuner will automatically adjust the inductance (L) and capacitance (C) to minimize SWR.
- Once tuning is complete, the display will show the SWR value.
Advanced Operating Modes (Test and Fast Test)
- Način ispitivanja: To enter Test Mode, press and hold both the BYP i AUTO buttons simultaneously, then power on the device. This mode is used for diagnostic purposes.
- Fast Test Mode: To enter Fast Test Mode, press and hold the UGODITE, BYP, i AUTO buttons simultaneously, then power on the device. This mode provides a quicker diagnostic check.

Image: A page from the ATU-100 manual illustrating the display indicators for Automatic, Bypass, and Manual modes, along with instructions for Test and Fast Test modes.
Power Supply and Booster Board
The ATU-100 requires a 10-15 VDC power supply. A DC 5.5 x 2.1 power cable is included. For users who need to power the device from a 5V USB source, a USB 5V to 9V booster board is provided.
USB 5V to 9V Booster Board Instructions:
- Connect the booster board to a 5V USB power source using a USB cable (not included).
- Solder the 5.5 connector power cable (included) to the booster board's output terminals.
- Connect the 5.5 connector to the ATU-100's DC12V input.
Voltage Regulation Method:
Za podešavanje izlaznog voltage of the booster board:
- Locate the potentiometer on the booster board.
- Turn the potentiometer clockwise to increase the voltage.
- Turn the potentiometer counter-clockwise to decrease the voltage.
- Ako izlazni voltage does not adjust initially and remains at the input voltage, rotate the potentiometer counter-clockwise more than 10 turns before attempting to adjust it normally.
Booster Module Characteristics:
- Maksimalna izlazna struja: 2A
- Ulazni voltage: 2V-15V
- Maksimalni izlazni voltage: >5V-28V
- Učinkovitost: >93%
Važne napomene:
- Ulazni voltage should not exceed the maximum input voltage.
- Peak current output should not exceed 2A.

Image: Instructions and diagram for connecting and adjusting the USB 5V to 9V booster board.
Tehnički podaci
| Značajka | Specifikacija |
|---|---|
| Broj modela | OOXM1618 |
| Marka | Malahit |
| Frekvencijski raspon | 1.8 - 50 MHz |
| Maksimalna radna snaga | 100 vata |
| Maksimalna izmjerena snaga | 150 vata |
| Minimum Power for Tuning Start | 1 vat |
| Minimum Measured Power | 0.1 vat |
| Točnost mjerenja snage | 10% |
| Maximum Inductance Set | 8.5 uH |
| Minimum Step for Setting Inductance | 0.1 uH |
| Maximum Installed Capacitance | 1870 pF |
| Minimum Step for Setting Capacitance | 10 pF |
| Raspon napajanja | 10-15 VDC |
| Maksimalna struja | 450 mA |
| Impedancija | 50 oma |
| Priključci | UHF |
| Boja | Crna |
| Dimenzije (D*Š*V) | 140 x 88 x 38 mm |
| Težina | 550g |
Održavanje
To ensure the longevity and optimal performance of your ATU-100 tuner, follow these maintenance guidelines:
- Čišćenje: Za čišćenje vanjske strane uređaja koristite meku, suhu krpu. Izbjegavajte korištenje abrazivnih sredstava za čišćenje ili otapala koja mogu oštetiti završnu obradu.
- Uvjeti okoliša: Operate and store the tuner in a dry environment, away from direct sunlight, extreme temperatures, and high humidity.
- Veze: Periodically check all cable connections (power, antenna, RF IN) to ensure they are secure and free from corrosion.
- Ažuriranja firmvera: Provjerite proizvođača website for any available firmware updates. Follow the provided instructions carefully for any update procedures.
Rješavanje problema
If you encounter issues with your ATU-100 tuner, consider the following common troubleshooting steps:
- Bez napajanja:
- Ensure the power cable is securely connected to both the tuner and the power source.
- Provjerite da li izvor napajanja osigurava ispravnu glasnoćutage (10-15 VDC).
- If using the USB booster board, confirm it is correctly connected and providing adequate voltage. Check the potentiometer adjustment.
- High SWR After Tuning:
- Ensure your antenna system is properly connected and functional.
- Verify that the power output from your transceiver is within the tuner's operating limits (1-100W for tuning).
- Try re-tuning the antenna.
- Inspect antenna cables and connectors for damage.
- Tuner ne odgovara:
- Power cycle the device (turn off, wait a few seconds, then turn on).
- Pazite da nijedan gumb nije zaglavljen.
If problems persist, consult the manufacturer's support resources or a qualified technician.
Jamstvo i podrška
The Malahit ATU-100 Automatic Antenna Tuner comes with a 1-year availability for spare parts. For technical support, warranty claims, or further assistance, please contact your retailer or the manufacturer directly. Keep your proof of purchase for warranty validation.
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