The HOD (Hook-On-Device) for UAS

HOD

ADS-B/FLARM technology with LTE connectivity

The Hook-On-Device (HOD) for UAS and other aircraft (such as helicopters) to transmit their own position data. Thanks to its low weight, the HOD can be attached to any aircraft.

It contains an LTE modem and a SIM card. The device transmits its current GNSS position via LTE to the UAS Traffic Management (UTM) system of DFS. The device is capable of receiving FLARM and ADS-B from surrounding air traffic and sending this data additionally to its own position to the UTM system. The UAS operator receives the UAS own position and the position data of other relevant air traffic in the vicinity via the web based UTM tracker.

At the same time, the HOD transmits its position via FLARM (flight alarm). In this way, the aircraft also becomes visible to otherairspace users in the vicinity who use FLARM.

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Basic Electrical specification:

Parameter Value
FLARM frequencies
(transmitter and receiver)

868 MHz

FLARM range Highly dependent on antenna installation (also at other airspace users)
ADS-B 1090 MHz receiver
ADS-B-range 250 km (can be reduced by the user to limit data usage)
Antenna orientation
(reception/transmission)
GNSS oriented upwards (writing “Pulse” facing up)
LTE/FLARM/ADS-B – oriented downwards
External (power) connector 6 pin JST (power and data) or mirco USB (power and data), MMCX (antennas)
Power supply 5 V (external power supply, such as a power bank or aircraft’s power supply)
Energy consumption < 400 mA
Dimension 58 mm x 38 mm x 9.5 mm
Weight 35 g without antennas
84 g with antennas
89 g with USB and antennas
60 g power bank
149 g HOD with all antennas and power bank