Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA6MSO callsign genealogy
Currently held by CASTON, MILTON K
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 WA6MSO's current licensee, walking backwards.
- BASSETT, PATRICIA SWAgranted 2006-05-12cancelled 2006-06-06
Successor callsigns
Callsigns held now by people who previously held WA6MSO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA6MSO, oldest first.
- CASTON, MILTON K CA1994-11-01 → cancelled 1998-11-15
- BASSETT, PATRICIA S UT2026-05-07 active