Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0Z callsign genealogy
Currently held by WINKLER JR, JOHN P
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 KA0Z's current licensee, walking backwards.
- Picciano, Anthony GCOgranted 2016-03-21cancelled 2016-09-27
Successor callsigns
Callsigns held now by people who previously held KA0Z.
- WINKLER JR, JOHN PTXgranted 2014-09-06cancelled 2020-04-11
All historical holders
Every license row we've seen with the callsign KA0Z, oldest first.
- WINKLER JR, JOHN P MO2007-04-10 → cancelled 2014-09-06
- Picciano, Anthony G CO2026-08-04 active