Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0RNS callsign genealogy
Currently held by nalder II, Nathan J
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 K0RNS's current licensee, walking backwards.
- nalder II, Nathan JCOgranted 2018-04-16cancelled 2018-05-05
Successor callsigns
Callsigns held now by people who previously held K0RNS.
- Ulmer, Eric RNYgranted 2020-06-23
All historical holders
Every license row we've seen with the callsign K0RNS, oldest first.
- Ulmer, Eric R MN2003-08-07 → cancelled 2010-03-26
- nalder II, Nathan J CO2018-05-05 active