Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4RJS callsign genealogy
Currently held by Shipley, Robert J
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 KO4RJS's current licensee, walking backwards.
- Shipley, Robert JFLgranted 2016-11-21cancelled 2016-12-13
Successor callsigns
Callsigns held now by people who previously held KO4RJS.
No current licensee on record previously held this callsign.