Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9SN callsign genealogy
Currently held by Ison, Clay A
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 AC9SN's current licensee, walking backwards.
- Ison, Clay AINgranted 2016-07-13cancelled 2018-03-28
Successor callsigns
Callsigns held now by people who previously held AC9SN.
- Ison, Clay AINgranted 2018-05-30cancelled 2018-12-28