Mictronics - DIY Electronic projects and more.

ADS-B Antenna comparison

This is a comparison of three ADS-B antennas: a OPA-5 from Embedded Development GmbH, the GNS HULC-M from GNS Electronics and my simple DIY built.

Disclaimer #

This is a pure hobbyist test and comparison of ADS-B hardware that you can buy online.
I have no relation with Embedded Development GmbH nor GNS Electronics GmbH.

Equipment under test #

(in that order)

Test location #

The Ipf mountain.
Latitude N48.87131
Longitude E10.35730
Elevation 668m above MSL

Test setup #
OPA-5 facing north
OPA-5 facing south
GNS HULC facing north
GNS HULC facing east
DIY antenna facing north east
DIY antenna facing west
Test time #

Start: 10.05.2020 14:00
End: 10.05.2020 17:00

Each antenna setup was operated for 1 hour.

Note:
Time shown in graphs is not correct due to Raspberry Pi clock being out of sync while running offline.

Additional test hardware #
readsb run command line options #
./readsb --device-type modesbeast --beast-serial /dev/ttyUSB0 --max-range 0 --no-modeac-auto --net --lat 48.87131 --lon 10.35730 --no-modeac-auto --rx-location-accuracy 1 --write-output-every 5 --write-output /run/readsb --stats-range --quiet

./readsb --device-type gnshulc --beast-serial /dev/ttyUSB0 --max-range 0 --no-modeac-auto --net --lat 48.87131 --lon 10.35730 --no-modeac-auto --rx-location-accuracy 1 --write-output-every 5 --write-output /run/readsb --stats-range --quiet
readsb performance graphs #
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
OPA-5 left - GNS HULC center - DIY right
readsb polar range graph #

Note: These graphs depend on maximum distance of aircraft seen in any 5° sector during runtime.

Range in kilometer
Range in nautical miles
Some thoughts at the end #

(in loose order, expressing my personal opinion)

Credits #

Special thanks to Gian Dido for temporary provision of the GNS HULC-M antenna.

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