Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9OSO callsign genealogy
Currently held by Duran, Aaron J
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 K9OSO's current licensee, walking backwards.
- Duran, Aaron JCAgranted 2021-03-09cancelled 2021-03-30
Successor callsigns
Callsigns held now by people who previously held K9OSO.
No current licensee on record previously held this callsign.