Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC4BC callsign genealogy
Currently held by VAN NEWKIRK, FRANK
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 AC4BC's current licensee, walking backwards.
- Cheng, WilliamFLgranted 2017-03-06cancelled 2018-08-07
Successor callsigns
Callsigns held now by people who previously held AC4BC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AC4BC, oldest first.
- VAN NEWKIRK, FRANK AL1990-12-04 → cancelled 2002-12-05
- Cheng, William FL2018-08-07 active