Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AC0SG callsign genealogy
Currently held by GREGG, STEVEN P
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 AC0SG's current licensee, walking backwards.
- GREGG, STEVEN PKSgranted 2017-01-06cancelled 2020-01-28
Successor callsigns
Callsigns held now by people who previously held AC0SG.
- Wiig, Douglas MIAgranted 2010-06-15cancelled 2010-08-17
All historical holders
Every license row we've seen with the callsign AC0SG, oldest first.
- Wiig, Douglas M IA2007-02-08 → cancelled 2010-06-15
- GREGG, STEVEN P KS2020-01-28 active