Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4ZB callsign genealogy
Currently held by ANDERSON, TOM K
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 KN4ZB's current licensee, walking backwards.
- ANDERSON, TOM KNCgranted 2019-10-15cancelled 2023-06-22
Successor callsigns
Callsigns held now by people who previously held KN4ZB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KN4ZB, oldest first.
- ACOSTA, WILLIAM B FL2011-02-28 → cancelled 2023-04-04
- ANDERSON, TOM K NC2023-06-22 active