Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4NX callsign genealogy
Currently held by Roberts Jr, George 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 K4NX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4NX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4NX, oldest first.
- Roberts Jr, George L FL2005-03-15 → cancelled 2017-03-24
- Shefte, John d NC2017-04-11 active