Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0MST callsign genealogy
Currently held by Underdown, Gavin 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 W0MST's current licensee, walking backwards.
- Underdown, Gavin AMOgranted 2013-08-13cancelled 2017-03-14
Successor callsigns
Callsigns held now by people who previously held W0MST.
No current licensee on record previously held this callsign.