Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0BO callsign genealogy
Currently held by OLSEN, ROBERT B
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 K0BO's current licensee, walking backwards.
- BURNS, DAVID MIAgranted 2010-06-21cancelled 2016-08-16
Successor callsigns
Callsigns held now by people who previously held K0BO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0BO, oldest first.
- OLSEN, ROBERT B CO1997-08-21 → cancelled 2000-08-30
- Valenta, Glenn A CO2007-06-02 → cancelled 2014-07-28
- BURNS, DAVID M TN2016-08-16 active