Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9YC callsign genealogy
Currently held by Pierce, Philip N
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 AC9YC's current licensee, walking backwards.
- Pierce, Philip NILgranted 2019-10-02cancelled 2021-02-01
Successor callsigns
Callsigns held now by people who previously held AC9YC.
No current licensee on record previously held this callsign.