Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM3I callsign genealogy
Currently held by Ocfemia Jr, Gregorio N
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 KM3I's current licensee, walking backwards.
- Grumbine, John DPAgranted 2024-03-06cancelled 2026-06-30
Successor callsigns
Callsigns held now by people who previously held KM3I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM3I, oldest first.
- Ocfemia Jr, Gregorio N FL2014-03-25 → cancelled 2026-05-19
- Grumbine, John PA2026-06-30 active