Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM7EXO callsign genealogy
Currently held by Mattson III, Kenneth E
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 KM7EXO's current licensee, walking backwards.
- Mattson III, Kenneth EWAgranted 2015-10-22cancelled 2015-11-10
Successor callsigns
Callsigns held now by people who previously held KM7EXO.
No current licensee on record previously held this callsign.