Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AC9HY callsign genealogy
Currently held by Williams, John S
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 AC9HY's current licensee, walking backwards.
- Williams, John SILgranted 2008-02-07cancelled 2014-04-16
Successor callsigns
Callsigns held now by people who previously held AC9HY.
- Williams, John SILgranted 2025-04-01