Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7MK callsign genealogy
Currently held by KROTZ, MARK F
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 N7MK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N7MK.
No current licensee on record previously held this callsign.