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KICAD Design Files for a Short Wave Antenna Tuner for Radio Amateurs

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papamidas/ATU_0_HW

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ATU_0_HW

Antenna Tuning Unit for Radio Amateurs:

  • LC- or CL-type antenna tuner, software selectable
  • 256 capacitance values: 0..2.5 nF in steps of 10 pF
  • 256 inductance values - 256 inductance values: 0..15 µH in steps of 60 nH
  • controlled by an Arduino Nano
  • powered by a USB power bank
  • low current consumption (25..45 mA) by using bistable relays
  • remote control via Bluetooth
  • simple user interface using the Android app "serial bluetooth terminal"
  • 10 memory buttons for recalling setups for different frequency bands
  • open source hardware, open source firmware

ATU_0_TOP ATU_0_BOTTOM

have fun! 73 papamidas (DM1CR)