Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0IFI callsign genealogy
Currently held by ULFERS, DAVID 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 W0IFI's current licensee, walking backwards.
- ULFERS, DAVID Pcancelled 1999-04-08
Successor callsigns
Callsigns held now by people who previously held W0IFI.
No current licensee on record previously held this callsign.