Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4NFM callsign genealogy
Currently held by Jacobs, Thomas A
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 N4NFM's current licensee, walking backwards.
- JACOBS, THOMAS AGAgranted 2020-01-14cancelled 2020-03-13
Successor callsigns
Callsigns held now by people who previously held N4NFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4NFM, oldest first.
- WENGER, WILLIAM W IN1993-04-13 → cancelled 1998-03-12
- RIBEIRO, THIAGO FL2007-08-07 → cancelled 2019-08-08
- Jacobs, Thomas A GA2020-03-13 active