Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR6US callsign genealogy
Currently held by NICOLAYSEN, DONALD L
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 KR6US's current licensee, walking backwards.
- NICOLAYSEN, DONALD LCAgranted 2003-04-04cancelled 2007-06-02
- WB6IYGno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KR6US.
No current licensee on record previously held this callsign.