ATU-10 QRP Automatic Antenna Tuner by N7DDC

Version 1.4

Experience enhanced performance with the latest FW version 1.4, featuring:

• Resolved button glitches
• Improved stability in bus transfer to OLED
• Eliminated continuous data transfer to the display

Power Specifications

• Input Power: Minimum 1W, Maximum 15W

Control Button Functions

1. Short press: Resets the tuner, setting all relays to their initial state, disabling reactive elements.
2. Long press: Activates tuning mode.
3. Very long press (more than 5 seconds): Displays the firmware version on the screen.

Power Consumption Modes

1. Operation mode: Display actively shows parameters for 5 minutes.
2. Sleep mode: Display turns off, reactivatable with a short button press.
3. Off mode: After 30 minutes of inactivity, requires a long press (over 3 seconds) to turn on.

Current Consumption

• Active Mode: 12 mA
• Sleep Mode: 170 μA
• Off State: 37 μA

Technical Parameters

• Power Supply Voltage: 5V DC (Type C)
• Maximum Operating Current: 12 mA
• Maximum Operating Power: 10 watts
• Maximum Measurable Power: 15 watts
• Minimum Tuning Power: 1 watt
• Minimum Measurable Power: 0.1 watt
• Power Measurement Step: 0.1 Watt
• Power Measurement Accuracy: 10%
• Maximum Tuning Inductance: 18.37 µH
• Minimum Tuning Inductance: 0.1 μH
• Maximum Tuning Capacitance: 4079 pF
• Minimum Tuning Capacitance: 22 pF
• Tuning Frequency Range: 1.8 ~ 30MHz (extendable to 1.8-50MHz or higher)
• Control Protocol: Icom protocol

Physical Characteristics

• Dimensions: 100*75*26 mm
• Weight: 0.3kg
• Display: 0.91" OLED 128*32

Power and Connectivity

• Charging Voltage: 5V DC (Type C)
• Built-in Battery: 2xLi-Ion 14500 (3.7V/850 mAh)
• RF Interface: BNC

Package Includes

• 1 x ATU15 (screen color delivered randomly)
• 1 x Type-C Cable