Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4TI callsign genealogy
Currently held by Oberfield, Gregory S
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 N4TI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4TI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4TI, oldest first.
- Tilghman, Ralph T TN2013-07-31 → cancelled 2023-10-23
- Oberfield, Gregory S IL2025-12-09 active