Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5SY callsign genealogy
Currently held by ARMSTRONG, HOWARD 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 AC5SY's current licensee, walking backwards.
- ARMSTRONG, HOWARD Ecancelled 1999-07-12
Successor callsigns
Callsigns held now by people who previously held AC5SY.
No current licensee on record previously held this callsign.