Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3MDC callsign genealogy
Currently held by Crepeau, Michael D
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 N3MDC's current licensee, walking backwards.
- Crepeau, Michael DCOgranted 2007-11-29cancelled 2007-12-21
Successor callsigns
Callsigns held now by people who previously held N3MDC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3MDC, oldest first.
- LEIZEAR, JOHN T MD1992-05-05 → cancelled 2004-05-06
- Crepeau, Michael D NC2017-10-25 active