Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SWS callsign genealogy
Currently held by Sinclair Wireless Society
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 K4SWS's current licensee, walking backwards.
- SURBER, THOMAS SVAgranted 2021-07-01cancelled 2021-07-20
Successor callsigns
Callsigns held now by people who previously held K4SWS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SWS, oldest first.
- Sinclair Wireless Society GA2002-09-27 → cancelled 2014-09-30
- Surber, Thomas S VA2021-07-20 active