| DownlinkFormat Enumeration |
An enumeration of the different downlink formats transmitted by transponders.
Namespace: VirtualRadar.Interface.ModeS
Assembly: VirtualRadar.Interface (in VirtualRadar.Interface.dll) Version: 1.0.0.0 (1.0.0.0)
SyntaxMembers| Member name | Value | Description | |
|---|---|---|---|
| ShortAirToAirSurveillance | 0 | Short ACAS reply (DF = 0). | |
| DF1 | 1 | Unused. | |
| DF2 | 2 | Unused. | |
| DF3 | 3 | Unused. | |
| SurveillanceAltitudeReply | 4 | Surveillance altitude reply (DF = 4). | |
| SurveillanceIdentityReply | 5 | Surveillance identity reply (DF = 5). | |
| DF6 | 6 | Unused. | |
| DF7 | 7 | Unused. | |
| DF8 | 8 | Unused. | |
| DF9 | 9 | Unused. | |
| DF10 | 10 | Unused. | |
| AllCallReply | 11 | Reply to an all-call interrogation (DF = 11). | |
| DF12 | 12 | Unused. | |
| DF13 | 13 | Unused. | |
| DF14 | 14 | Unused. | |
| DF15 | 15 | Unused. | |
| LongAirToAirSurveillance | 16 | Long ACAS reply (DF = 16). | |
| ExtendedSquitter | 17 | Extended squitter (DF = 17). | |
| ExtendedSquitterNonTransponder | 18 | Extended squitter from a non-transponder reply (DF = 18). | |
| MilitaryExtendedSquitter | 19 | Military extended squitter reply (DF = 19). | |
| CommBAltitudeReply | 20 | Comm-B altitude reply (DF = 20). | |
| CommBIdentityReply | 21 | Comm-B identity reply (DF = 21). | |
| DF22 | 22 | Unused. | |
| DF23 | 23 | Unused. | |
| CommD | 24 | Comm-D reply (DF = 24). |
See Also