RADR - Weather Radar

Send

Single packet with RADR command and number of radar points per frame you’d like X-Plane to send you.:

msg = struct.pack('<4sx10s', b'RADR', b'10')  # requesting 10 radar points per frame
sock.sendto(msg, (beacon['ip'], beacon['port']))

To stop, set request to b‘0’ times per frame.:

msg = struct.pack('<4sx10s', b'RADR', b'0')  # requesting 0 radar points per frame
sock.sendto(msg, (beacon['ip'], beacon['port']))

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Receive

Single packet with radar data:

(header,       # == 'RADR5'
 lon,          # float longitude of radar point
 lat,          # float latitude
 storm_level,  # precipitation level, 0 to 100
 storm_height  # storm tops in meters MSL
 ) = struct.unpack("<5sffBf", packet)

Note

X-Plane 11.55 (at least) documentation indicates the first five bytes received are RADR\x00. In reality, RADR5 is sent (without a null). Additionally, documentation indicates 4-byte float storm_level_0_100 whereas it is actually a single unsigned char.

A bug has been filed with Laminar Research: 2021-Sep-2.