Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1MSU callsign genealogy
Currently held by Grayson 707, Jeffery A
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 W1MSU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1MSU.
No current licensee on record previously held this callsign.