Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1USC callsign genealogy
Currently held by Ruiz, Anthony C
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 K1USC's current licensee, walking backwards.
- De La Torre, Javier LCAgranted 2008-10-06cancelled 2008-10-25
Successor callsigns
Callsigns held now by people who previously held K1USC.
- Ruiz, Anthony CCAgranted 2026-05-12
All historical holders
Every license row we've seen with the callsign K1USC, oldest first.
- Ruiz, Anthony C CA2004-08-24 → cancelled 2006-07-25
- De La Torre, Javier L CA2018-09-08 active