Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MPN callsign genealogy
Currently held by Neilsen, Michael P
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 W1MPN's current licensee, walking backwards.
- Neilsen, Michael PMAgranted 2000-08-05cancelled 2000-09-02
Successor callsigns
Callsigns held now by people who previously held W1MPN.
No current licensee on record previously held this callsign.