Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0CHB callsign genealogy
Currently held by Koch, Robert A
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 K0CHB's current licensee, walking backwards.
- Koch, Robert AAZgranted 2016-03-03cancelled 2016-05-06
Successor callsigns
Callsigns held now by people who previously held K0CHB.
No current licensee on record previously held this callsign.