Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8CSI callsign genealogy
Currently held by Sedlacek, Bruce E
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K8CSI's current licensee, walking backwards.
- Sedlacek, Bruce EOHgranted 2011-03-23cancelled 2011-04-29
Successor callsigns
Callsigns held now by people who previously held K8CSI.
No current licensee on record previously held this callsign.