Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO4NI callsign genealogy
Currently held by Phua, Caroline
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 WO4NI's current licensee, walking backwards.
- PHUA, CAROLINESCgranted 2001-10-30cancelled 2002-05-10
Successor callsigns
Callsigns held now by people who previously held WO4NI.
No current licensee on record previously held this callsign.