Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4ZBM callsign genealogy
Currently held by WORTH, HERBERT 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 KB4ZBM's current licensee, walking backwards.
- WORTH, HERBERT EGAgranted 2015-04-13cancelled 2015-05-19
Successor callsigns
Callsigns held now by people who previously held KB4ZBM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4ZBM, oldest first.
- WORTH, HERBERT E GA1991-01-15 → cancelled 2003-01-16
- WORTH, HERBERT E GA2025-04-29 active