Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0WAN callsign genealogy
Currently held by Vatsaas, Christian B
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 KC0WAN's current licensee, walking backwards.
- Cowan, Jonathan MCAgranted 2018-06-12cancelled 2018-09-07
Successor callsigns
Callsigns held now by people who previously held KC0WAN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0WAN, oldest first.
- Vatsaas, Christian B MN2006-02-24 → cancelled 2018-02-27
- Cowan, Jonathan M CA2018-09-07 active