Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1SJO callsign genealogy
Currently held by Olson, Stephen 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 W1SJO's current licensee, walking backwards.
- Olson, Stephen JNYgranted 2008-04-28cancelled 2008-06-03
Successor callsigns
Callsigns held now by people who previously held W1SJO.
No current licensee on record previously held this callsign.