Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0QKC callsign genealogy
Currently held by Espinoza, Aaron 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 KC0QKC's current licensee, walking backwards.
- Espinoza, Aaron RCOgranted 2026-06-23cancelled 2026-07-11
Successor callsigns
Callsigns held now by people who previously held KC0QKC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC0QKC, oldest first.
- Espinoza, Aaron R CO2003-07-02 → cancelled 2015-07-03
- Espinoza, Aaron R CO2026-07-11 active