Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NR0X callsign genealogy
Currently held by BLANKENHAGEN, HEINZ H
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 NR0X's current licensee, walking backwards.
- Joens, Jason LIAgranted 2010-08-06cancelled 2013-11-19
Successor callsigns
Callsigns held now by people who previously held NR0X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NR0X, oldest first.
- BLANKENHAGEN, HEINZ H IA2005-11-29 → cancelled 2011-11-28
- Joens, Jason L IA2023-11-25 active