Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4SF callsign genealogy
Currently held by STONE, ERIC B
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 KY4SF's current licensee, walking backwards.
- STONE, ERIC BVAgranted 2022-09-20cancelled 2022-10-14
Successor callsigns
Callsigns held now by people who previously held KY4SF.
- STONE, ERIC BVAgranted 2022-11-22