Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6OSU callsign genealogy
Currently held by NOTT, RONALD A
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 K6OSU's current licensee, walking backwards.
- NOTT, RONALD ACAgranted 2014-09-18cancelled 2014-10-10
Successor callsigns
Callsigns held now by people who previously held K6OSU.
- Nott, Ronald ACAgranted 2023-03-07
All historical holders
Every license row we've seen with the callsign K6OSU, oldest first.
- DAVIS, FRANCIS R CA1996-08-01 → cancelled 2008-08-02
- NOTT, RONALD A MO2014-10-10 → cancelled 2023-03-07