Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG4UO callsign genealogy
Currently held by PETRY, JOHN S
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 AG4UO's current licensee, walking backwards.
- PETRY, JOHN SFLgranted 2002-02-04cancelled 2002-07-01
Successor callsigns
Callsigns held now by people who previously held AG4UO.
No current licensee on record previously held this callsign.