Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4SDO callsign genealogy
Currently held by Owen Jr, Steven D
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 N4SDO's current licensee, walking backwards.
- Owen Jr, Steven DGAgranted 2009-06-30cancelled 2011-04-26
Successor callsigns
Callsigns held now by people who previously held N4SDO.
- merritt 774, kerry GFLgranted 2021-09-28