Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC6AB callsign genealogy
Currently held by NICHOLSON, CARL E
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 AC6AB's current licensee, walking backwards.
- Cardin, Michael BCAgranted 2003-09-12cancelled 2011-02-15
Successor callsigns
Callsigns held now by people who previously held AC6AB.
- NICHOLSON, CARLCAgranted 2013-01-12cancelled 2025-03-22
All historical holders
Every license row we've seen with the callsign AC6AB, oldest first.
- NICHOLSON, CARL E CA1994-01-25 → cancelled 2003-03-21
- Cardin, Michael B CA2020-12-11 active