SimTX API v24/Packets/StationImpactList

StationImpactList

Packet ID	18(0x12)
Direction	Server → client
Session	Moderation
Body size	Variable
Permission	None
Answered by
Answers	ListStations (moderation session)

StationImpactList is an interference analysis for moderators. On a moderation session, the server sends it right after the StationList that answers a ListStations. It ranks transmitters by how much they affect receivers, which helps to find jammers and badly configured stations.

Layout

Field	Type	Description
packetId	u8	Always 18.
count	i32	Number of entries, at most 100,000.
impacts	count × Impact	See below.

Impact

Field	Type	Description
stationUuid	UTF	Transmitter UUID.
callsign	UTF	Callsign.
address	UTF	Client address.
frequencyHz	f32	Carrier frequency.
modulation	UTF	Modulation name.
powerWatts	f32	Power.
occupiedBandwidthHz	f32	Occupied bandwidth.
impactScore	f32	Largest spectral overlap with any receiver's passband, in percent (0–100). The list is sorted by this value, highest first.
affectedReceivers	i32	Number of receivers whose passband the transmitter overlaps significantly.
nearestReceiverKm	f32	Great-circle distance to the nearest receiver on the server. NaN when there are no receivers.
reasons	UTF	Human-readable notes, such as an overdriven amplifier.