Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0SUR callsign genealogy
Currently held by HELGESON, KORENE 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 N0SUR's current licensee, walking backwards.
- Surrena, Patrick JCOgranted 2017-04-17cancelled 2017-08-04
Successor callsigns
Callsigns held now by people who previously held N0SUR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0SUR, oldest first.
- HELGESON, KORENE B MN2002-06-03 → cancelled 2014-06-03
- Surrena, Patrick J CO2017-08-04 active