Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4SMU callsign genealogy
Currently held by CIANGETTI, PAUL 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 W4SMU's current licensee, walking backwards.
- RIEDEL, MICHAEL WVAgranted 2017-08-16cancelled 2017-09-06
Successor callsigns
Callsigns held now by people who previously held W4SMU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4SMU, oldest first.
- CIANGETTI, PAUL P KY1987-11-03 → cancelled 1999-11-04
- RIEDEL, MICHAEL W VA2017-09-06 active