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LHCP (Left-Hand Circular Polarization) antennas.
Most analog FPV systems traditionally use RHCP antennas. Using LHCP helps reduce interference from nearby RHCP systems and can improve signal performance when multiple FPV systems are operating in the same area.
A simple way to understand this is that left-hand and right-hand circular polarization do not match well with each other, similar to how a left hand and a right hand cannot perform the same handshake.
Yes. However, all antennas on both the air unit and receiver unit must use the same polarization.
Replacing the antennas on only one side with a different polarization will cause significant signal loss.
Linearly polarized antennas are smaller and lighter, making them well suited for Whoops and other micro FPV drones.
Their transmission performance is generally sufficient for the shorter operating ranges typical of these small aircraft.
Standby Mode keeps the air unit operating at reduced RF output power while waiting for the flight controller to send an Arm signal.
Although the air unit operates at reduced power, it can still overheat after extended operation because it continues processing HD video. Always use a cooling fan during prolonged bench testing or configuration.
If the air unit is not connected to a flight controller or the flight controller is not configured correctly, the air unit will not automatically exit Standby Mode when the aircraft is armed.
No. The camera field of view (FOV) is determined by hardware such as the image sensor and lens, so it cannot be adjusted through software.
Yes, but third-party lenses may not be fully compatible.
Possible issues include vignetting, incorrect focus range, or a lens body that is too long for the camera housing.
Race Mode is recommended because it uses frequencies aligned with standard analog FPV Raceband channels.
Keep adjacent pilots at least 2–3 m apart.
Space the selected channels as far apart as possible. For example, use channels 1, 3, 5, and 7 instead of adjacent channels.
When possible, different pilots or groups can also use opposite antenna polarizations. For example, one pilot can use LHCP while another uses RHCP.
Yes, but it is not recommended.
The air unit and receiver unit must run matching firmware versions. Do not downgrade firmware unless specifically instructed, as incompatible firmware may cause the device to become unresponsive or permanently damaged.
No. Their hardware architectures and firmware are not compatible.
No. Their firmware and hardware interfaces are not compatible.
Yes. The coaxial cables used by the two systems are compatible.
Range Estimation Mode calculates the approximate distance between the air unit and receiver unit by measuring radio transmission time.
Because electromagnetic waves travel through space at approximately the speed of light, the system can estimate distance from the measured transmission delay without requiring GPS.
Environmental interference, reflections, and other RF conditions can affect the result. The typical measurement error is within approximately 100 m.
Frequency Hopping is a feature introduced in firmware V39.44.18 to improve video-link performance in environments with external RF interference.
When enabled, the receiver unit continuously scans the surrounding RF environment and automatically switches to a more suitable channel.
The operating channel cannot be selected manually while Frequency Hopping is enabled.
Under ideal free-space conditions, approximately four times the RF power is required to achieve twice the transmission distance.
This is because radio-wave energy spreads outward through space, and the received signal strength decreases approximately with the square of the distance.
To minimize latency, use a lower transmission resolution, a higher frame rate, and the maximum available transmission bandwidth.
For the Avatar HD system, use:
Avatar HD is a two-way digital FPV video system. If the receiver unit detects incomplete or missing data packets, it may request that the air unit retransmit the missing data.
Reducing the amount of transmitted video data helps reduce packet loss and retransmissions, resulting in more stable latency.
For lower latency fluctuations, use:
Race Mode uses 540p video transmission to further reduce the amount of transmitted data and minimize latency fluctuations as much as possible.