Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9JKK callsign genealogy
Currently held by Kundrat, Joseph
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 K9JKK's current licensee, walking backwards.
- Kundrat, JosephINgranted 2014-03-04cancelled 2014-08-12
Successor callsigns
Callsigns held now by people who previously held K9JKK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9JKK, oldest first.
- HACKETT, CHARLES F IN1996-08-27 → cancelled 2008-06-19
- Kundrat, Joseph IN2024-06-01 active