Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA4YS callsign genealogy
Currently held by Steinschreiber, Yuri
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 AA4YS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AA4YS.
No current licensee on record previously held this callsign.