Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC4SL callsign genealogy
Currently held by CHAPMAN, STEVEN W
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 AC4SL's current licensee, walking backwards.
- KO4HCno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AC4SL.
- CHAPMAN, STEVEN WFLgranted 2002-09-10cancelled 2014-09-11