Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7MWM callsign genealogy
Currently held by McDuff, Mark W
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 K7MWM's current licensee, walking backwards.
- McDuff, Mark WWAgranted 2015-10-06cancelled 2015-10-27
Successor callsigns
Callsigns held now by people who previously held K7MWM.
No current licensee on record previously held this callsign.