Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1NNN callsign genealogy
Currently held by MARSTON, MARK 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 W1NNN's current licensee, walking backwards.
- Pitrelli, Enrico ClaudioNJgranted 2019-12-05cancelled 2019-12-27
Successor callsigns
Callsigns held now by people who previously held W1NNN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1NNN, oldest first.
- MARSTON, MARK K ME2007-10-11 → cancelled 2019-10-12
- Pitrelli, Enrico Claudio NJ2019-12-27 active