Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO7ROB callsign genealogy
Currently held by OLSON, ROBERT M
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 KO7ROB's current licensee, walking backwards.
- OLSON, ROBERT MIDgranted 2015-02-17cancelled 2015-03-10
Successor callsigns
Callsigns held now by people who previously held KO7ROB.
No current licensee on record previously held this callsign.