Confidence: Medium · Source: FCC ULS · As of 2026-09-11
WA6SW callsign genealogy
Currently held by COSS, WILLIAM F
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 WA6SW's current licensee, walking backwards.
- COSS, WILLIAM FCAgranted 2015-12-03cancelled 2017-03-14
Successor callsigns
Callsigns held now by people who previously held WA6SW.
No current licensee on record previously held this callsign.