Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4CW callsign genealogy
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 AB4CW's current licensee, walking backwards.
- DRIER, ABRAHAMVAgranted 2010-02-16cancelled 2011-11-29
Successor callsigns
Callsigns held now by people who previously held AB4CW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4CW, oldest first.
- DRIER, ABRAHAM VA2021-10-30 active
- ——