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["20231122first","20240102","Drone_VTX Camera Size-Does Not Apply","Drone_VTX Module Mount-25.5x25.5","Drone_VTX Parts-VTX","Drone_VTX Video-Analog"]
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BetaFPV A03 400mW 5.8G VTX
BetaFPV A03 400mW 5.8G VTX
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 26*26mm mounting hole size, it is suitable for whoop or toothpick drones like X-Knight series , Beta85X/95X series , TWIG series and Pavo series .
Know More About OpenVTx
Big thanks to Jye Smith and all contributors for their time and energies to OpenVTx project.
OpenVTx refers to open source video transmitter firmware for the FPV community, which aims to provide firmware with both the SmartAudio and Tramp protocols. Either protocol can be used on the flight controller and on VTx power up the protocol used is automatically detected by OpenVTx. For more information, you can know it from OpenVTx GitHub .
Bullet Point
An open-source video transmitter with OpenVTx firmware. The A03 VTX supports SmartAudio and Tramp protocols. Through these protocols, the flight controller is able to adjust the video transmitter settings, which are the power, the band, and the channel of the transmission.
A03 VTX is a high-quality 5.8GHz VTX with strong anti-interference ability and stable transmission. Comes with PIT/RCE/25mW/100mW/400mW adjustable output power, allowing the perfect amount of output power to be selected based on your FPV needs. Overall weighing 4.9g with a small-size layout, A03 VTX comes with a 26*26mm mounting hole and is perfectly suitable for whoop or toothpick drones like the X-Knight series , Beta85X/95X series , TWIG series , and Pavo series drones. Featuring a fixed mounting hole and 6-pin connector, less solder work needed, which makes it’s super easy to install.
Specification
Item: A03 5.8G VTX
Output power: PIT/RCE/25mW/100mW/400mW (10-26dBm)
Supply voltage range: 7-35V
Current (8v): <300mA (400mW)
Weight: 4.9g (excluding antenna)
VTX size: 30.34*30.34*4.6mm
Mounting Hole Size: 26*26mm
Antenna: Air Antenna (MMCX Straight)
Frequency: 5.8GHz 48 channels
Raceband: 5658~5917MHz
Channel SEL: SmartAudioV2.0 & Tramp
Modulation type: FM
Antenna port: 50 Ω
Operating temperature: -10℃~+60℃
Recommend drones: 26*26mm mounting hole, Pavo series , X-Knight series , Beta85X/95X series , and TWIG series
Comparison to BETAFPV VTX Series
One of the best VTX on BETAFPV VTX Series. A03 400mW 5.8G VTX is a video transmitter with OpenVTx firmware and supports both the SmartAudio and Tramp protocols. Besides, A03 VTX sports a better cost performance and comes with OpenVTx firmware, which supports adjustable output power and frequency, in contrast to A02 VTX . In a word, A03 VTX works perfectly without any reduction in performance or power.
A03 VTX
M02 VTX M03 VTX A02 VTX
Mounting Hole
26*26mm
26*26mm or 14*18mm
14*18mm
26*26mm
Max Output Power
400mW
350mW
350mW
800mW
Supply Voltage Power
7-35V
4.5-5.5V
4.5-5.5V
7-35V
Protocol
SA&Tramp
SmartAudio
Firmware
OpenVTx
BETAFPV VTX System
Compatible Drones
Whoop & Toothpick Drones
3-5 inch Drones
65-85mm Whoop Drones
Whoop & Toothpick Drones
Diagram for A03 VTX
Below is the diagram picture for A03 400mW 5.8G VTX.
Below is the instruction diagram for connecting the VTX with Toothpick F722 2-6S AIO Brushless Flight Controller 35A(BLHei_32) . The line color in the diagram matches the 6-pin connector wires' color.
Band & Channel & Power Settings for A03
The band, channel and power for A03 400mW 5.8G VTX can be changed by the OSD menu only. Enter the OSD menu by radio transmitter sticks ( Pitch Stick UP and Yaw Stick Left), then select FEATURES -> VTX SA to change the frequency and power.
LED status is shown below. VTX mode (band/channel/power) LED indication is similar to TBS's approach.
Below is the frequency table for A03 400mW 5.8G VTX.
Betaflight CLI for SmartAudio or Tramp protocols can be obtained from here:
https://github.com/OpenVTx/OpenVTx
Active and Exit the PitMode
Set PIT ON or OFF on OSD menu.
Active and Exit the RACE Mode
When at a race event and using pitmode on a switch with Betaflight, select the RCE VTx power level. It will force pitmode on boot and only use 25mW. Select POWER and set RCE mode on OSD menu.
Package
1 * BETAFPV A03 5.8G VTX
1 * 6-Pin FC Cable
1 * Air Antenna(MMCX Straight) 3 * Anti-Vibration Rubber Dampers
