Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1SWX callsign genealogy
Currently held by Wurmbrand, Stephan B
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 K1SWX's current licensee, walking backwards.
- Wurmbrand, Stephan BMAgranted 2023-05-09cancelled 2023-05-27
Successor callsigns
Callsigns held now by people who previously held K1SWX.
No current licensee on record previously held this callsign.