Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1FK callsign genealogy
Currently held by Olson, Timothy 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 N1FK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N1FK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1FK, oldest first.
- HEUSEL, MARC S NJ2013-11-19 → cancelled 2026-03-06
- Olson, Timothy J CT2026-04-07 active