Format Frequency Technology Source Type Content Trigger Action SBS
UF00 1030 MHz ACAS AIRCRAFT ALL CALL ACAS
UF04 1030 MHz RADAR RADAR ROLL CALL 24 bit address + Altitude N/A Ask for Altitude   N/A
UF05 1030 MHz RADAR RADAR ROLL CALL 24 bit address + ModeA N/A Ask for ModeA N/A
UF11 1030 MHz RADAR RADAR ALL CALL 24 bit address ( IC > 0 ) N/A Mode S ALL CALL N/A
UF11 1030 MHz ACAS Plane ALL CALL 24 bit address  ( IC = 0 ) N/A N/A
UF16 1030 MHz ACAS Plane ALL CALL N/A N/A
UF20 1030 MHz RADAR RADAR ROLL CALL 24 bit address + ALT + BDS N/A Ask for altitude + BDS N/A
UF21 1030 MHz RADAR RADAR ROLL CALL 24 bit address + ModeA + BDS N/A Ask for ModeA + BDS N/A
Format Frequency Technology Source Type Content Trigger Example SBS
DF00 1090 MHz ACAS Plane Squitter Squitter
DF04 1090 MHz RADAR Plane ROLL CALL 24 bit address + Altitude RADAR UF04 7C1A78 38000 feet MSG,5
DF05 1090 MHz RADAR Plane  ROLL CALL 24 bit address + Mode A RADAR UF05 7C1A78 A1234 MSG,6
DF11 1090 MHz RADAR Plane ALL CALL 24 bit address (IC > 0) RADAR UF11 7C1A78 ALL CALL reply MSG,8
DF11 1090 MHz ACAS Plane ALL CALL 24 bit address (IC = 0) Squitter 7C1A78 ACAS squitter MSG,8
DF16 1090 MHz ACAS Plane  Squitter 24 bit address + Altitude Squitter 7C1A78 38000 feet MSG,7
DF17 1090 MHz ADS-B Plane Squitter 24 bit address + BDS 0,8 Aircraft ID + CAT Squitter 7C1A78 ADA02 MSG,1
DF17 1090 MHz ADS-B Plane Squitter 24 bit address + BDS 0,5 Airborne Pos Squitter 7C1A78 , LAT/LON , Altitude MSG,3
DF17 1090 MHz ADS-B Plane Squitter 24 bit address + BDS 0,9 Airborne Vel Squitter 7C1A78, GS, TRK, VERT RATE MSG,4
DF18 1090 MHz ADS-B Plane/Car Squitter 24 bit address + BDS 0,6 Surf Position Squitter 7C1A78 + Surf Position MSG,2
DF20 1090 MHz RADAR Plane ROLL CALL 24 bit address , Altitude + BDS RADAR UF20 7C1A78 38000 feet + BDS MSG,5
DF21 1090 MHz RADAR Plane ROLL CALL 24 bit address , Mode A + BDS RADAR UF21 7C1A78 A1234 + BDS MSG,6
BDS Frequency Technology Source Type Content Trigger Example SBS
BDS 1,0 1090 MHz RADAR  Plane ROLL CALL Transponder capability RADAR only 7C1A78 Transponder capability
BDS 1,7 1090 MHz RADAR  Plane ROLL CALL GICB capability RADAR only 7C1A78 GICB capability
BDS 2,0 1090 MHz RADAR  Plane  ROLL CALL Flight ID RADAR only 7C1A78 ADA02
BDS 4,0 1090 MHz RADAR  Plane  ROLL CALL Vertical Intent RADAR only
BDS 5,0 1090 MHz RADAR  Plane  ROLL CALL Track and Turn RADAR only
BDS 6,0 1090 MHz RADAR  Plane  ROLL CALL Heading and speed RADAR only
BDS 0,5 1090 MHz RADAR/ADS-B Plane  ROLL CALL or ADS-B Airborne Position RADAR or ADS-B 7C1A78 , LAT/LON , Altitude MSG,3
BDS 3,0 1090 MHz RADAR  Plane  ROLL CALL  ACAS RA RADAR only
BDS 0,6 1090 MHz ADS-B Plane  Squitter Surface Position ADS-B MSG,2
BDS 0.9  1090 MHz ADS-B Plane  Squitter Velocity Message  ADS-B 7C1A78, GS, TRK, VERT RATE MSG,4
BDS 0.8 1090 MHz ADS-B Plane  Squitter Identity and Type ADS-B 7C1A78 ADA02 MSG,1
BDS 6,5 1090 MHz ADS-B Plane  Squitter Operational Status ADS-B
BDS 0,7 1090 MHz ADS-B Plane Squitter Status ADS-B
BDS 0,A 1090 MHz ADS-B Plane Squitter Event driven Info ADS-B
Altitude 1090 MHz RADAR Plane ROLL CALL Altitude RADAR Only 7C1A78 38000 feet
Mode A 1090 MHz RADAR Plane ROLL CALL ModeA RADAR Only 7C1A78 A1234