Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA1USD callsign genealogy
Currently held by Muzzulin, Guerin V
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 WA1USD's current licensee, walking backwards.
- Baldini, Damon TVAgranted 2007-01-16cancelled 2015-09-29
Successor callsigns
Callsigns held now by people who previously held WA1USD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA1USD, oldest first.
- Muzzulin, Guerin V CT2001-02-13 → cancelled 2013-02-27
- Baldini, Damon T VA2026-04-07 active