Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SFH callsign genealogy
Currently held by South Fork High School Radio Club
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 K4SFH's current licensee, walking backwards.
- KO4UZFcancelledSouth Fork High School Radio ClubFLgranted 2021-11-23cancelled 2021-12-17
Successor callsigns
Callsigns held now by people who previously held K4SFH.
No current licensee on record previously held this callsign.