Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0KKJ callsign genealogy
Currently held by DALKE, WILLIAM D
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 K0KKJ's current licensee, walking backwards.
- DALKE, WILLIAM DCOgranted 2010-07-15cancelled 2015-12-01
Successor callsigns
Callsigns held now by people who previously held K0KKJ.
- DALKE, WILLIAM DCOgranted 2015-12-01cancelled 2022-09-24
All historical holders
Every license row we've seen with the callsign K0KKJ, oldest first.
- FRAZER, KENNETH M NE1994-05-31 → cancelled 2006-06-01
- DALKE, WILLIAM D CO2015-12-01 → cancelled 2016-02-29