Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9AOY callsign genealogy
Currently held by Smith, Stephen 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 KC9AOY's current licensee, walking backwards.
- Smith, Stephen AILgranted 1998-12-17cancelled 2001-11-20
Successor callsigns
Callsigns held now by people who previously held KC9AOY.
- Smith, Stephen AOHgranted 2004-04-06cancelled 2007-05-29