Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4OOR callsign genealogy
Currently held by Arrington, Joseph 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 KJ4OOR's current licensee, walking backwards.
- ARRINGTON, JOSEPH STNgranted 2019-04-26cancelled 2019-09-10
Successor callsigns
Callsigns held now by people who previously held KJ4OOR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4OOR, oldest first.
- Arrington, Joseph D TN2009-08-21 → cancelled 2017-08-22
- ARRINGTON, JOSEPH S TN2019-09-10 active