Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WL4M callsign genealogy
Currently held by Hobart, William J
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 WL4M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WL4M.
No current licensee on record previously held this callsign.