Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4OHI callsign genealogy
Currently held by Isak, Olev
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 N4OHI's current licensee, walking backwards.
- Isak, OlevFLgranted 2022-02-14cancelled 2025-01-14
Successor callsigns
Callsigns held now by people who previously held N4OHI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4OHI, oldest first.
- LARSEN, JAMES O FL2001-04-24 → cancelled 2008-03-18
- Isak, Olev FL2025-01-14 active