Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CIA callsign genealogy
Currently held by PASSINEAU, RICHARD F
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 W9CIA's current licensee, walking backwards.
- WU, XUANMINFLgranted 2023-05-02cancelled 2023-05-20
Successor callsigns
Callsigns held now by people who previously held W9CIA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9CIA, oldest first.
- PASSINEAU, RICHARD F WI2009-01-10 → cancelled 2021-02-24
- WU, XUANMIN FL2023-05-20 active