Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7FX callsign genealogy
Currently held by Chalfan, Richard 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 AC7FX's current licensee, walking backwards.
- Roersma, JohnWAgranted 2022-10-19cancelled 2022-12-20
Successor callsigns
Callsigns held now by people who previously held AC7FX.
- Chalfan, Richard DWAgranted 2021-01-28
All historical holders
Every license row we've seen with the callsign AC7FX, oldest first.
- Chalfan, Richard D VI2000-12-16 → cancelled 2003-01-22
- Roersma, John CO2022-12-20 active