Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4UJO callsign genealogy
Currently held by MALOUF, PHILIP M
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 KJ4UJO's current licensee, walking backwards.
- MALOUF, PHILIP MNCgranted 2022-01-27cancelled 2024-09-21
Successor callsigns
Callsigns held now by people who previously held KJ4UJO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4UJO, oldest first.
- YATHALI, JENEFIAH M FL2010-04-19 → cancelled 2022-04-20
- MALOUF, PHILIP M NC2024-09-21 active