Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WK1C callsign genealogy
Currently held by THOMAS, DAVID O
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 WK1C's current licensee, walking backwards.
- THOMAS, DAVID OTXgranted 2003-03-19cancelled 2003-12-12
Successor callsigns
Callsigns held now by people who previously held WK1C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WK1C, oldest first.
- GUYTON, GREGORY P MA1990-09-18 → cancelled 2002-09-19
- THOMAS, DAVID O TX2023-11-14 active