Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4ZT callsign genealogy
Currently held by ROLDAN DE JESUS, JUAN C
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 KP4ZT's current licensee, walking backwards.
- ROLDAN DE JESUS, JUAN CPRgranted 2015-11-17cancelled 2019-02-22
- WP4NGWno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KP4ZT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4ZT, oldest first.
- DELACANTERA, LUIS FL2006-03-03 → cancelled 2018-03-21
- ROLDAN DE JESUS, JUAN C PR2019-02-22 active