Confidence: Medium · Source: FCC ULS · As of 2026-10-24
KJ4JSF callsign genealogy
Currently held by MELVIN II, JAMES E
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 KJ4JSF'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 KJ4JSF.
- MELVIN II, JAMES EVAgranted 2026-10-14