Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7MDK callsign genealogy
Currently held by Klemmer, Matthew
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 N7MDK's current licensee, walking backwards.
- KLEMMER, MATTHEWINgranted 2024-11-19cancelled 2024-12-07
Successor callsigns
Callsigns held now by people who previously held N7MDK.
No current licensee on record previously held this callsign.