Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1MDK callsign genealogy
Currently held by Kemp, Martin 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 N1MDK's current licensee, walking backwards.
- Kemp, Martin DMAgranted 2025-04-26cancelled 2025-05-30
Successor callsigns
Callsigns held now by people who previously held N1MDK.
- Martin, David WMEgranted 2016-02-20
All historical holders
Every license row we've seen with the callsign N1MDK, oldest first.
- Martin, David W ME2002-04-02 → cancelled 2006-04-04
- Kemp, Martin D MA2025-05-30 active