Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5RO callsign genealogy
Currently held by OLSEN, RICHARD H
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 AC5RO's current licensee, walking backwards.
- OLSEN, RICHARD HOKgranted 2008-06-27cancelled 2014-08-29
Successor callsigns
Callsigns held now by people who previously held AC5RO.
- GROENE, MAIKTXgranted 2018-10-01
All historical holders
Every license row we've seen with the callsign AC5RO, oldest first.
- OLSEN, RICHARD H OK2024-07-12 active
- GROENE, MAIK— → cancelled 1998-11-09