Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4FSO callsign genealogy
Currently held by The Ferguson Amateur 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 KJ4FSO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KJ4FSO.
- N2VAactiveThe Ferguson Amateur Radio ClubVAgranted 2025-05-13