Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TIN callsign genealogy
Currently held by Vitulli, Ronald
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 W4TIN's current licensee, walking backwards.
- Vitulli, RonaldTXgranted 2022-08-09cancelled 2022-09-02
Successor callsigns
Callsigns held now by people who previously held W4TIN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4TIN, oldest first.
- FOSTER, CHARLES A KY2007-03-22 → cancelled 2019-05-16
- Vitulli, Ronald TX2022-09-02 active