Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0BKO callsign genealogy
Currently held by OSVOLD, BRIAN K
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 K0BKO's current licensee, walking backwards.
- OSVOLD, BRIAN KNDgranted 2017-08-08cancelled 2017-08-26
Successor callsigns
Callsigns held now by people who previously held K0BKO.
- OSVOLD, BRIAN KNDgranted 2023-04-11