Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9SAU callsign genealogy
Currently held by SORSBY SR, THOMAS 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 W9SAU's current licensee, walking backwards.
- CRONIN, DANIEL RILgranted 2015-03-11cancelled 2016-03-11
Successor callsigns
Callsigns held now by people who previously held W9SAU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9SAU, oldest first.
- SORSBY SR, THOMAS B IL1989-01-31 → cancelled 2001-02-01
- CRONIN, DANIEL R IL2025-12-17 active