Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0FUI callsign genealogy
Currently held by Knapp, Phillip G
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 W0FUI's current licensee, walking backwards.
- Knapp, Phillip GSDgranted 2008-01-24cancelled 2009-02-13
Successor callsigns
Callsigns held now by people who previously held W0FUI.
No current licensee on record previously held this callsign.