Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC3QM callsign genealogy
Currently held by Houfek, John 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 AC3QM's current licensee, walking backwards.
- Houfek, John RMDgranted 2025-03-11cancelled 2026-03-23
Successor callsigns
Callsigns held now by people who previously held AC3QM.
- Houfek, John RMDgranted 2026-04-14