Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7MMU callsign genealogy
Currently held by CLEWELL, MICHAEL A
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 K7MMU's current licensee, walking backwards.
- CLEWELL, MICHAEL ACAgranted 2005-11-03cancelled 2006-11-14
Successor callsigns
Callsigns held now by people who previously held K7MMU.
No current licensee on record previously held this callsign.