Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9SC callsign genealogy
Currently held by MADRIGAL, JOSE 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 AC9SC's current licensee, walking backwards.
- MADRIGAL, JOSE RILgranted 2017-11-08cancelled 2018-02-06
Successor callsigns
Callsigns held now by people who previously held AC9SC.
- MADRIGAL, JOSE RILgranted 2018-02-24cancelled 2018-03-01