Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1KOL callsign genealogy
Currently held by Kolodziej, Marek K
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 N1KOL's current licensee, walking backwards.
- Kolodziej, Marek KMAgranted 2010-08-03cancelled 2010-08-24
Successor callsigns
Callsigns held now by people who previously held N1KOL.
- FILLION, THOMAS BMAgranted 2012-03-10cancelled 2024-06-05