Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ZBB callsign genealogy
Currently held by HARDIN SR, WILLIAM M
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 K4ZBB's current licensee, walking backwards.
- Bice, Bruce RTNgranted 2020-03-20cancelled 2020-04-11
Successor callsigns
Callsigns held now by people who previously held K4ZBB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZBB, oldest first.
- HARDIN SR, WILLIAM M KY2007-06-27 → cancelled 2019-09-24
- Bice, Bruce R TN2020-04-11 active