Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3UI callsign genealogy
Currently held by Platt Jr, Henry N
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 W3UI's current licensee, walking backwards.
- Rizio, Lino JIAgranted 2019-03-14cancelled 2019-04-16
Successor callsigns
Callsigns held now by people who previously held W3UI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3UI, oldest first.
- Platt Jr, Henry N TN2007-01-03 → cancelled 2019-03-26
- Rizio, Lino J IA2019-04-16 active