Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU0C callsign genealogy
Currently held by University Of Colorado Colorado Springs ARC
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 KU0C's current licensee, walking backwards.
- KC0RFAcancelledUniversity Of Colorado At Co Spgs ARCCOgranted 2003-11-26cancelled 2003-12-16
Successor callsigns
Callsigns held now by people who previously held KU0C.
- Sims III, William HALgranted 2021-02-23
All historical holders
Every license row we've seen with the callsign KU0C, oldest first.
- SIMS III, WILLIAM H AL1998-06-08 → cancelled 2001-05-11
- University Of Colorado Colorado Springs ARC CO2024-01-31 active