Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA0AF callsign genealogy
Currently held by Barrott, Jonathan C
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 AA0AF's current licensee, walking backwards.
- OSTERWYK, AARON SMNgranted 2022-05-04cancelled 2026-01-06
Successor callsigns
Callsigns held now by people who previously held AA0AF.
All historical holders
Every license row we've seen with the callsign AA0AF, oldest first.
- Barrott, Jonathan C CO2017-04-18 → cancelled 2021-07-30
- OSTERWYK, AARON S MN2026-01-06 active