Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SBO callsign genealogy
Currently held by Osmon, Stephen B
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 W1SBO's current licensee, walking backwards.
- Osmon, Stephen BMOgranted 2010-02-22cancelled 2010-03-13
Successor callsigns
Callsigns held now by people who previously held W1SBO.
No current licensee on record previously held this callsign.