Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0YY callsign genealogy
Currently held by Mainka, Josef
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 AC0YY's current licensee, walking backwards.
- Mainka, JosefMOgranted 2011-10-07cancelled 2012-02-06
Successor callsigns
Callsigns held now by people who previously held AC0YY.
No current licensee on record previously held this callsign.