Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO0STX callsign genealogy
Currently held by Klopfenstein, Fulton L
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 KO0STX's current licensee, walking backwards.
- Klopfenstein, Fulton LMOgranted 2021-03-17cancelled 2023-06-03
Successor callsigns
Callsigns held now by people who previously held KO0STX.
No current licensee on record previously held this callsign.