LX Navigation

Interfaces
FLARM delivers an enriched NMEA-0183 stream including conflict data. As a further option, FLARM can be used as a data logger; its log file is compatible with the IGC standard, however FLARM is not IGC approved.

Operation
The small-size, low-cost, low-power device FLARM broadcasts its own position and speed vector (as obtained with an integrated GPS) over a license-free ISM band radio transmission. At the same time it listens to other devices based on the same standard. Intelligent motion prediction algorithms predict short-term conflicts and warn the pilot accordingly by acoustical and visual means. FLARM incorporates a high-precision WAAS 16-channel GPS receiver and an integrated low-power radio transceiver. Static obstacles are included in FLARM's database. The collision warning algorithms were calibrated and optimized using thousands of flight logs. No warning is given if an aircraft does not pose an immediate threat.

FLARM displays
External displays (LED and graphical) are available from the following suppliers:
LX Navigation
Ediatec
Artronic
RF Developments (Australia and New Zealand)
Butterfly Avionics

Regarding the system TM250 made by Funkwerk Avionics (previously known as Filser), Funkwerk and Flarm have agreed on June 24, 2009 to the following description (below the inofficial translation): "Via the serial port, an external FLARM-system can be connected to TM250, allowing to display positions and directions of the airplanes on TM250. If no FLARM-system is installed and connected to TM250, TM250 is still capable to indicate gliders at low accuracy. This is done with a rough detection of the signal strength of a FLARM-eqipped glider. In this case, no indication can be made regarding direction, altitude, distance or position of the other aircraft. Furthermore, no signals are emitted to the other aircraft." (full German text available at hier)

No other devices are fully compatible to FLARM.
Please read our considerations about compatibility