Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3KH callsign genealogy
Currently held by HEILBRONN, KURT R
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 K3KH's current licensee, walking backwards.
- Harris, Karl OPAgranted 2005-09-23cancelled 2009-03-03
Successor callsigns
Callsigns held now by people who previously held K3KH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3KH, oldest first.
- HEILBRONN, KURT R NY1997-02-11 → cancelled 2009-02-12
- Harris, Karl O PA2019-02-05 active