Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0YL callsign genealogy
Currently held by COLORADO YLS
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 AC0YL's current licensee, walking backwards.
- KC0PQWcancelledColorado YLsCOgranted 2003-04-14cancelled 2004-04-24
Successor callsigns
Callsigns held now by people who previously held AC0YL.
No current licensee on record previously held this callsign.