Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7RTC callsign genealogy
Currently held by WUORINEN, CARL 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 K7RTC's current licensee, walking backwards.
- Colburn, Richard TMTgranted 2015-05-27cancelled 2016-10-04
Successor callsigns
Callsigns held now by people who previously held K7RTC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7RTC, oldest first.
- WUORINEN, CARL A OR1997-05-27 → cancelled 2009-05-28
- Colburn, Richard T MT2016-10-04 active