Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0OJ callsign genealogy
Currently held by JENKINS, ORLIN D
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 K0OJ's current licensee, walking backwards.
- KF0MUIcancelledWeld Amateur Radio SocietyCOgranted 2023-05-23cancelled 2023-07-11
Successor callsigns
Callsigns held now by people who previously held K0OJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0OJ, oldest first.
- JENKINS, ORLIN D CO2016-10-18 → cancelled 2022-12-21
- Weld Amateur Radio Society CO2023-07-11 active