Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0WSW callsign genealogy
Currently held by WALOWITZ, WILLIAM 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 K0WSW's current licensee, walking backwards.
- WALOWITZ, WILLIAM SCOgranted 2019-02-07cancelled 2021-06-22
Successor callsigns
Callsigns held now by people who previously held K0WSW.
No current licensee on record previously held this callsign.