Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9JCH callsign genealogy
Currently held by HERBST, JOHN C
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 K9JCH's current licensee, walking backwards.
- HERBST, JOHN CILgranted 2018-10-05cancelled 2018-10-27
Successor callsigns
Callsigns held now by people who previously held K9JCH.
No current licensee on record previously held this callsign.