Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4USP callsign genealogy
Currently held by FINIGAN JR, WILLIAM H
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 W4USP's current licensee, walking backwards.
- FINIGAN JR, WILLIAM HVAgranted 2005-03-01cancelled 2005-04-19
Successor callsigns
Callsigns held now by people who previously held W4USP.
- FINIGAN JR, WILLIAM HFLgranted 2018-07-12