Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1GEO callsign genealogy
Currently held by OULTON SR, HAROLD J
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 N1GEO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N1GEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1GEO, oldest first.
- OULTON SR, HAROLD J ME1988-12-27 → cancelled 2000-12-28
- DOERSCH, GEORGE H OR2025-07-29 active