User's Manual

HM30 User Manual V1.2
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High gain antenna (17 to 20 dBi) on HM30 ground unit.
Wireless mode: 24 km long range.
Route flight through GCS is suggested as the antenna is directional.
4. 40 Kilometers GCS Flight
*For professional users only
High gain antenna (17+ dBi) on HM30 ground unit.
Wireless mode: 40 km long range.
This is not the mode for everyone. Please do not try to use it. Without high gain
antennas, the signal quality could be bad, and the video stream could freeze
occasionally!
2.2.3 Air Unit Antenna Choice
Only the standard omni antenna is suggested for HM30 / MK15 air unit. Quantity is
two pieces.
For small planes or who worries about the signal from the top, and who does not
care about the very long range, welcome to use the SIYI original lollipop antenna.