Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD7TYN callsign genealogy
Currently held by Clauson, Mattie C
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 KD7TYN's current licensee, walking backwards.
- Clauson, Mattie CORgranted 2002-07-16cancelled 2003-01-13
Successor callsigns
Callsigns held now by people who previously held KD7TYN.
- Clauson, Mattie CORgranted 2002-07-16cancelled 2004-02-27