Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1MTP callsign genealogy
Currently held by DEXTER, MICHAEL E
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 N1MTP's current licensee, walking backwards.
- PLEMMONS, MICHAEL TOHgranted 2007-06-29cancelled 2010-07-09
Successor callsigns
Callsigns held now by people who previously held N1MTP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1MTP, oldest first.
- DEXTER, MICHAEL E ME1992-06-09 → cancelled 2004-06-11
- PLEMMONS, MICHAEL T OH2020-08-01 active