Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4IBM callsign genealogy
Currently held by IBM CHARLOTTE AMATEUR RADIO CLUB
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 N4IBM's current licensee, walking backwards.
- KF4OGLno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held N4IBM.
No current licensee on record previously held this callsign.