Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SPA callsign genealogy
Currently held by Ambrose, Stephen P
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 W1SPA's current licensee, walking backwards.
- Ambrose, Stephen PALgranted 2009-04-07cancelled 2009-05-01
Successor callsigns
Callsigns held now by people who previously held W1SPA.
No current licensee on record previously held this callsign.