Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6RBO callsign genealogy
Currently held by MURRAY, DONALD M
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 K6RBO's current licensee, walking backwards.
- Tryon, Mary LCOgranted 2022-08-26cancelled 2024-10-29
Successor callsigns
Callsigns held now by people who previously held K6RBO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6RBO, oldest first.
- MURRAY, DONALD M CA2010-05-15 → cancelled 2022-05-17
- Tryon, Mary L CO2024-10-29 active