Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1KM callsign genealogy
Currently held by DIETERICH, MARK K
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 N1KM's current licensee, walking backwards.
- DIETERICH, MARK KRIgranted 2013-07-24cancelled 2015-02-20
Successor callsigns
Callsigns held now by people who previously held N1KM.
- MOLLICA, MATTHEWTXgranted 2023-06-30
All historical holders
Every license row we've seen with the callsign N1KM, oldest first.
- MOLLICA, MATTHEW TX2007-12-01 → cancelled 2013-02-01
- DIETERICH, MARK K RI2024-12-11 active