Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0WIN callsign genealogy
Currently held by LARSON, GREGORY S
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 K0WIN's current licensee, walking backwards.
- Downey, Kirk LKSgranted 2025-08-05cancelled 2025-09-23
Successor callsigns
Callsigns held now by people who previously held K0WIN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0WIN, oldest first.
- LARSON, GREGORY S MN2012-04-06 → cancelled 2024-05-01
- Downey, Kirk L KS2025-09-23 active