Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB8CS callsign genealogy
Currently held by WINKWORTH IV, ROBERT 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 AB8CS's current licensee, walking backwards.
- Smith, Clarence AOHgranted 2024-10-29cancelled 2025-04-04
Successor callsigns
Callsigns held now by people who previously held AB8CS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB8CS, oldest first.
- WINKWORTH IV, ROBERT D MI2007-08-07 → cancelled 2019-08-28
- Smith, Clarence A OH2025-04-04 active