Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4OLA callsign genealogy
Currently held by Indian River Repeater Group
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 KJ4OLA's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KJ4OLA.
- W4IRCactiveTreasure Coasters Repeater AssociationFLgranted 2019-07-02