Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9STU callsign genealogy
Currently held by Sauter, Stuart 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 W9STU's current licensee, walking backwards.
- Stewart, Robert LTNgranted 2018-02-28cancelled 2018-03-20
Successor callsigns
Callsigns held now by people who previously held W9STU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9STU, oldest first.
- Sauter, Stuart P AR2002-08-16 → cancelled 2014-08-19
- Stewart, Robert L TN2018-03-20 active