Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1CW callsign genealogy
Currently held by Fu, Shih-Ching
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 AC1CW's current licensee, walking backwards.
- Fu, Shih-ChingMIgranted 2018-10-11cancelled 2019-04-06
Successor callsigns
Callsigns held now by people who previously held AC1CW.
- FLOYD, MARK SCTgranted 2026-05-30
All historical holders
Every license row we've seen with the callsign AC1CW, oldest first.
- FLOYD, MARK S CT2016-04-19 → cancelled 2016-05-27
- Fu, Shih-Ching MI2019-04-06 active