Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0NCW callsign genealogy
Currently held by COSTELLO, R MICHAEL
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 W0NCW's current licensee, walking backwards.
- WA0FLPcancelledcancelled 1998-04-22
Successor callsigns
Callsigns held now by people who previously held W0NCW.
No current licensee on record previously held this callsign.