Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF5IZ callsign genealogy
Currently held by Crespo, CARLOS A
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 AF5IZ's current licensee, walking backwards.
- Crespo, CARLOS ATXgranted 2006-10-28cancelled 2013-03-19
Successor callsigns
Callsigns held now by people who previously held AF5IZ.
- Crespo, CARLOS ATXgranted 2023-04-12