Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4XBI callsign genealogy
Currently held by HALSTEAD, HAROLD 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 N4XBI's current licensee, walking backwards.
- Halstead, Dwight DFLgranted 2011-03-24cancelled 2016-03-12
Successor callsigns
Callsigns held now by people who previously held N4XBI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4XBI, oldest first.
- HALSTEAD, HAROLD L FL2009-03-20 → cancelled 2015-09-24
- Halstead, Dwight D FL2016-03-12 active