Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4BZ callsign genealogy
Currently held by Helms, Robert E
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 KZ4BZ's current licensee, walking backwards.
- Helms, Robert ENCgranted 2023-09-12cancelled 2023-11-13
Successor callsigns
Callsigns held now by people who previously held KZ4BZ.
No current licensee on record previously held this callsign.