Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0KBK callsign genealogy
Currently held by Kaplan, Kenneth B
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 K0KBK's current licensee, walking backwards.
- BALZER, KATHLEEN MIAgranted 2005-01-26cancelled 2009-07-31
Successor callsigns
Callsigns held now by people who previously held K0KBK.
- KAPLAN, KENNETH BIAgranted 2022-07-28
All historical holders
Every license row we've seen with the callsign K0KBK, oldest first.
- Kaplan, Kenneth B IA2000-06-13 → cancelled 2002-07-09
- BALZER, KATHLEEN M IA2019-05-07 active