Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KL3MRO callsign genealogy
Currently held by Olson, Mark R
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 KL3MRO's current licensee, walking backwards.
- Olson, Mark RAKgranted 2013-12-02cancelled 2020-01-24
Successor callsigns
Callsigns held now by people who previously held KL3MRO.
No current licensee on record previously held this callsign.