Please enter your 6 digit Radio ID (FLARM ID or ICAO ID) below to obtain a range and SAR report.
Please check the FAQ below to learn how the analyzer operates and which regions are supported.
Please contact us if you'd like to add your club's fleet here!
To reset, please send us email indicating your FLARM ID.
The live analyzer uses signal strength data from ground receiver stations of the Open Glider Network (OGN).
For best results, fly for at least an hour within 50km of at least three different OGN stations. The stations will receive your FLARM and measure its signal strength.
Only data of aircraft moving with at least 5 m/s are considered.
Germany, France and the UK very well covered. A map of OGN stations together with coverage information is available here.
The FLARM ID consists of six hexadecimal digits is unique to your FLARM device. It may be automatically selected by FLARM or set to the ICAO code of your aircraft. You can find it in IGC files created by your FLARM. Look for the following entry near the top of any IGC file using a text editor:
LFLA135559ID 2 DE050F
LFLA135559 STEALTH OFF
Data are accumulated for at least 28 days.
We recommend to check your report once per year as part of annual maintenance, and additionally if:
The live analyzer shows the transmit performance whereas the range analyzer available from FLARM evaluates the receive performance (the sensitivity). Both are often similar, but not necessarily the same.
The first plot shows the average signal strength (in dB) of your FLARM over distance. The green line represents the average of a large sample of FLARM devices.
The second plot shows the average distance your FLARM is received with a signal strength of less than 10dB (blue) and from 10 to 20dB (red). Data are averaged over sectors of 30 degrees relative to your aircraft. In the plot, the nose of the aircraft points UP.
Please look at the examples above.
All data are processed continuously in realtime. You can evaluate your report immediately after the flight.
The live range analyzer cannot process data of FLARMs which have the 'Do Not Track'-flag set. If your device shows up despite the flag being set, please do contact us and attach your FLARM configuration file.