Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG4CQ callsign genealogy
Currently held by ROLON, HIRAM D
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 AG4CQ's current licensee, walking backwards.
- ROLON, HIRAM DFLgranted 2000-03-03cancelled 2006-04-28
Successor callsigns
Callsigns held now by people who previously held AG4CQ.
- Slintak, FrantisekFLgranted 2021-07-29
All historical holders
Every license row we've seen with the callsign AG4CQ, oldest first.
- Slintak, Frantisek FL1994-11-21 → cancelled 2001-09-11
- ROLON, HIRAM D FL2026-07-14 active