Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0UWU callsign genealogy
Currently held by Ruby, Emma C
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 K0UWU's current licensee, walking backwards.
- Ruby, Emma CMOgranted 2024-12-18cancelled 2025-04-01
Successor callsigns
Callsigns held now by people who previously held K0UWU.
- K0NACactiveNot A Cult Amateur Radio ClubCAgranted 2022-03-12
All historical holders
Every license row we've seen with the callsign K0UWU, oldest first.
- Not A Cult Amateur Radio Club CA2021-03-30 → cancelled 2022-03-12
- Ruby, Emma C MO2025-04-01 active