Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3TEX callsign genealogy
Currently held by Castillo, Adrian
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 K3TEX's current licensee, walking backwards.
- Castillo, AdrianTXgranted 2026-01-06cancelled 2026-08-21
Successor callsigns
Callsigns held now by people who previously held K3TEX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3TEX, oldest first.
- Mobley, Joan G TX2010-05-11 → cancelled 2022-07-08
- Castillo, Adrian TX2026-08-21 active