Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA4CX callsign genealogy
Currently held by Brumm, Keith D
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 NA4CX's current licensee, walking backwards.
- Brumm, Keith DTNgranted 2024-07-26cancelled 2026-06-18
Successor callsigns
Callsigns held now by people who previously held NA4CX.
No current licensee on record previously held this callsign.