Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4RTV callsign genealogy
Currently held by KOCH, ROBERT 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 K4RTV's current licensee, walking backwards.
- Koch, Robert CFLgranted 2008-08-27cancelled 2016-09-16
Successor callsigns
Callsigns held now by people who previously held K4RTV.
No current licensee on record previously held this callsign.