BetaFPV A03 VTX 25-400mW 5.8GHz Micro VTX - MMCX

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The BetaFPV A03 400mW 5.8G VTX, a video transmitter with OpenVTx firmware, supports both the SmartAudio and Tramp protocols. It features PIT/RCE/25mW/100mW/400mW adjustable output power for different use. With the 26x26mm mounting hole size, it is suitable for whoop or toothpick drones like the X-Knight seriesBeta85X/95X series, TWIG series, and Pavo series.

Check out all our Micro/Nano VTXs, and all our BetaFPV gear!


  • 5.8GHz 48CH FPV transmitter
  • 7V-35V input voltage
  • 25/100/400mW power switchable
  • Support OSD configuring via Betaflight flight controller
  • Support microphone
  • Support 8 drones flying at the same time without interference
  • It can ensure that the image has no snowflakes, and no stripes under the maximum throttle situation.


  • Frequency: 5.8GHz 6 bands, 48 channels
  • Input Voltage: DC 5V
  • Output Power: PIT/25mW/100mW/200mW/400mW switchable
  • Control Mode: BFOSD Control(RX)
  • Video System: NTSC/PAL
  • Antenna Interface: MMCX
  • Size: 30mm x 30mm x 4.6mm
  • Weight: 4.9g


  • 1x BETAFPV A03 5.8G VTX
  • 1x 6-Pin FC Cable
  • 1x Air Antenna(MMCX Straight)
  • 3x Anti-Vibration Rubber Dampers