Updated Automatic dependent surveillance–broadcast (ADS B) (markdown)

Automatic-dependent-surveillance–broadcast-(ADS-B).md

@@ -5,3 +5,17 @@ With this app you can receive real-time ADS-B used for air traffic control.
 ## Map
 
 ## Airlines
+
+### Log into microSD
+You can turn on logging the received data into the microSD card. The ADSB RX will log each frame including the following columns:
+
+* **(YEAR MONTH DAY HOUR MIN SEC)**
+* **(RAW PACKET IN HEXA)**
+* ICAO:**(ICAO)**
+* **(CALLSIGN)**
+* Alt:**(ALTITUDE)**
+* Lat**(LATITUDE)**
+* Lon**(LONGITUDE)**
+
+Example:
+`20171103100227 8DADBEEFDEADBEEFDEADBEEFDEADBEEF ICAO:nnnnnn callsign Alt:nnnnnn Latnnn.nn Lonnnn.nn`