Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SEX callsign genealogy
Currently held by YAHOOS CONTEST CLUB
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 K9SEX's current licensee, walking backwards.
- Moyce, Barbara AMTgranted 2022-01-24cancelled 2022-02-11
Successor callsigns
Callsigns held now by people who previously held K9SEX.
- WU5KactiveYAHOOS CONTEST CLUBTXgranted 2019-08-27
All historical holders
Every license row we've seen with the callsign K9SEX, oldest first.
- YAHOOS CONTEST CLUB TX2014-03-06 → cancelled 2019-08-27
- Moyce, Barbara A MT2022-02-11 active