Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6UUM callsign genealogy
Currently held by COURSEY, RONALD R
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 N6UUM's current licensee, walking backwards.
- JOHNSON, JOHN LCAgranted 2006-07-08cancelled 2010-03-30
Successor callsigns
Callsigns held now by people who previously held N6UUM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6UUM, oldest first.
- COURSEY, RONALD R CA1999-05-13 → cancelled 1999-08-03
- JOHNSON, JOHN L CA2020-02-06 active