Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0BO callsign genealogy
Currently held by Mathiasen, Riley
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 AB0BO's current licensee, walking backwards.
- Mathiasen, RileyMNgranted 2016-10-21cancelled 2024-01-17
Successor callsigns
Callsigns held now by people who previously held AB0BO.
- SHERER, ANTHONY JMNgranted 2016-11-11