Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0TS callsign genealogy
Currently held by KWOK, SAMUEL 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 W0TS's current licensee, walking backwards.
- KWOK, SAMUEL SSDgranted 2012-07-18cancelled 2020-03-10
Successor callsigns
Callsigns held now by people who previously held W0TS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0TS, oldest first.
- Spink, Thomas E WA2008-04-03 → cancelled 2018-02-18
- KWOK, SAMUEL S SD2020-03-10 active