Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG4UK callsign genealogy
Currently held by Kosater, Joseph M
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 AG4UK's current licensee, walking backwards.
- Kosater, Joseph MSCgranted 1996-06-10cancelled 2002-06-27
Successor callsigns
Callsigns held now by people who previously held AG4UK.
- Kosater, Joseph MSCgranted 2011-03-26cancelled 2023-03-28