HM30 User Manual v1.3
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2024 SIYI Technology Copyright
2.2 Important Instructions on Promotion to HM30 Communication
Range and Video Fluency
To have the best communication range and video fluency with HM30 system, please
carefully read the below tips for antenna options, antenna setup, and link
configuration.
2.2.1 General Precautions
1. It is suggested that not to run SIYI FPV app and QGroundControl app
simultaneously with video streaming, not even running one at backstage, as it
still occupies bandwidth thereby lower the communication range.
2. Only power batteries are allowed to power the ground unit and the air unit. HD
image transmission system requires very high standard to the current of power
supply, the instancy of the current response, and the current ripple. Power
supply from a third-party power module, modified power module or from PDB
may interfere the link stability and the communication range. If you do need the
power module, it is suggested to use the SIYI original 4S to 18S power module.
3. It is first recommended to establish a wired connection with the target device
through the HM30 ground-side network port to ensure link stability and video
fluency. If the target device is far away from the HM30 ground terminal, it is
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