3) 20 to 30 Kilometers GCS Flight
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!
3. Air Unit Antenna Choice
Only the standard omni antenna is suggested for HM30 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.
4. How to Mount the Standard Antenna on HM30 Ground Unit
1) The SMA connector should be screwed tightly.
2) The antenna should stand vertically, and its flat side should always point to your
aircraft or vehicle.
3) Do not cross the two antennas.
4) The two antennas should be amounted apart from each other for about 10 cm
distance, at least 5 cm, to ensure that they transmit and receive signals well.
5. How to Mount the Long-Range Antenna on HM30 Ground Unit
1) The SMA connector should be screwed tightly.
2) The panel side should always point to your aircraft or vehicle.
3) Please make its short side in horizontal directional and its long side in vertical
direction. On the air unit, the antenna top should be in vertical direction and point to
the ground.
4) Please be very careful with the antenna cable’s SMA connector and its solder point.
Do not drag it or bend it in case of any damage. To adjust the position of the antenna,
always try to bend the middle part of the antenna cable.
5) The two antennas should be amounted apart from each other for about 10 cm
distance, at least 5 cm, to ensure that they transmit and receive signals well.
6. How to Place HM30 Air Unit Antenna
1) The SMA connector should be screwed tightly.
2) On a quadcopter, the air unit antenna should be hanged vertically from the carbon
fiber board or the arms with the head pointing downward, and its flat side should
always point to the ground unit in most flight altitudes.
3) On a plane, the antenna can stand vertically from the wings.
