Confidence: Medium · Source: FCC ULS · As of 2026-10-28
K4JOA callsign genealogy
Currently held by Miranda, Joao
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 K4JOA's current licensee, walking backwards.
- Miranda, JoaoFLgranted 2026-06-02cancelled 2026-09-22
Successor callsigns
Callsigns held now by people who previously held K4JOA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JOA, oldest first.
- RUSSELL, WALTER C NC1996-11-05 → cancelled 2008-11-06
- Miranda, Joao FL2026-09-22 active