Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU5E callsign genealogy
Currently held by Martinez Jr, Mario
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 KU5E's current licensee, walking backwards.
- Martinez Jr, MarioFLgranted 2007-12-13cancelled 2008-02-05
Successor callsigns
Callsigns held now by people who previously held KU5E.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU5E, oldest first.
- SULLIVAN SR, JAMES R TX1996-06-12 → cancelled 2002-12-01
- Martinez Jr, Mario FL2017-11-28 active