Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC6SP callsign genealogy
Currently held by BAIRD, WILLIAM M
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 AC6SP's current licensee, walking backwards.
- BAIRD, WILLIAM MCAgranted 2019-04-02cancelled 2019-07-13
Successor callsigns
Callsigns held now by people who previously held AC6SP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AC6SP, oldest first.
- GIHR, AUGUSTO S CA1996-02-16 → cancelled 2008-02-19
- BAIRD, WILLIAM M CA2019-07-13 active