Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0MSW callsign genealogy
Currently held by waller, Martin S
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 W0MSW's current licensee, walking backwards.
- Waller, Martin SMOgranted 2018-07-05cancelled 2018-07-24
Successor callsigns
Callsigns held now by people who previously held W0MSW.
No current licensee on record previously held this callsign.