Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ5OP callsign genealogy
Currently held by DIAZ, MICHAEL J
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 KJ5OP's current licensee, walking backwards.
- Krahn, Justin FLAgranted 2025-02-26cancelled 2025-06-03
Successor callsigns
Callsigns held now by people who previously held KJ5OP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ5OP, oldest first.
- DIAZ, MICHAEL J AR2003-07-08 → cancelled 2015-07-28
- Krahn, Justin F LA2025-06-03 active