Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4ROB callsign genealogy
Currently held by Denis, Roberto E
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 KO4ROB's current licensee, walking backwards.
- Denis, Roberto EFLgranted 2020-07-16cancelled 2020-08-08
Successor callsigns
Callsigns held now by people who previously held KO4ROB.
No current licensee on record previously held this callsign.