Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9SQ callsign genealogy
Currently held by Alderman, Christopher 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 AC9SQ's current licensee, walking backwards.
- Alderman, Christopher MWIgranted 2018-03-09cancelled 2018-04-10
Successor callsigns
Callsigns held now by people who previously held AC9SQ.
No current licensee on record previously held this callsign.