Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1FFF callsign genealogy
Currently held by Federlein, Frederic H
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 N1FFF's current licensee, walking backwards.
- Tillman, DylanALgranted 2021-08-03cancelled 2021-12-24
Successor callsigns
Callsigns held now by people who previously held N1FFF.
- Federlein, Frederic HNHgranted 2018-01-17
All historical holders
Every license row we've seen with the callsign N1FFF, oldest first.
- MILLS, CHARLES A ME1987-09-22 → cancelled 1999-09-23
- Federlein, Frederic H MA2004-03-10 → cancelled 2008-03-11
- Tillman, Dylan AL2021-12-24 active