Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9FXC callsign genealogy
Currently held by Cudworth, Mark
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 W9FXC's current licensee, walking backwards.
- Cudworth, MarkINgranted 2006-04-06cancelled 2006-04-28
Successor callsigns
Callsigns held now by people who previously held W9FXC.
No current licensee on record previously held this callsign.