Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9YW callsign genealogy
Currently held by Carlson, Stephen
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 AB9YW's current licensee, walking backwards.
- Carlson, StephenILgranted 2010-12-10cancelled 2011-03-28
Successor callsigns
Callsigns held now by people who previously held AB9YW.
No current licensee on record previously held this callsign.