Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1USM callsign genealogy
Currently held by NELSON JR, JOHN F
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 W1USM's current licensee, walking backwards.
- NELSON JR, JOHN FRIgranted 1999-11-27cancelled 2000-07-28
Successor callsigns
Callsigns held now by people who previously held W1USM.
No current licensee on record previously held this callsign.