Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC6WOU callsign genealogy
Currently held by DEFOSSE, JOHN R
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 KC6WOU's current licensee, walking backwards.
- DEFOSSE, JOHN RCAgranted 2012-08-09cancelled 2015-05-19
Successor callsigns
Callsigns held now by people who previously held KC6WOU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC6WOU, oldest first.
- DE FOSSE, JOHN R CA1991-06-25 → cancelled 2003-06-26
- DEFOSSE, JOHN R CA2025-07-01 active