Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4JSG callsign genealogy
Currently held by CAVAZOS, ANTHONY S
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 KN4JSG's current licensee, walking backwards.
- Gurley, Jacob SSCgranted 2026-02-25cancelled 2026-03-17
Successor callsigns
Callsigns held now by people who previously held KN4JSG.
- Cavazos, Anthony SNCgranted 2018-03-20
All historical holders
Every license row we've seen with the callsign KN4JSG, oldest first.
- CAVAZOS, ANTHONY S TN2018-02-14 → cancelled 2018-03-20
- Gurley, Jacob S SC2026-03-17 active