Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW7OS callsign genealogy
Currently held by Spaulding, Omar Y
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 KW7OS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KW7OS.
No current licensee on record previously held this callsign.