Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4STU callsign genealogy
Currently held by NEUBERGER, STUART A
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 K4STU's current licensee, walking backwards.
- NEUBERGER, STUART AFLgranted 2011-10-25cancelled 2012-05-01
Successor callsigns
Callsigns held now by people who previously held K4STU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4STU, oldest first.
- SMITH, STUART L TN1998-12-17 → cancelled 2010-12-21
- NEUBERGER, STUART A FL2022-11-05 active