Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC4SOT callsign genealogy
Currently held by SIGMON, DAVID W
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 KC4SOT's current licensee, walking backwards.
- SIGMON, DAVID WNCgranted 2018-01-29cancelled 2018-02-16
Successor callsigns
Callsigns held now by people who previously held KC4SOT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4SOT, oldest first.
- STYLES SR, JAMES H NC2001-02-14 → cancelled 2013-05-15
- SIGMON, DAVID W NC2018-02-16 active