Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NU2X callsign genealogy
Currently held by FELMLEE, DAVID 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 NU2X's current licensee, walking backwards.
- FELMLEE, DAVID BPAgranted 2013-07-10cancelled 2018-09-07
Successor callsigns
Callsigns held now by people who previously held NU2X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NU2X, oldest first.
- Kowalski, John J NJ2006-05-30 → cancelled 2018-08-09
- FELMLEE, DAVID B PA2018-09-07 active