Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4RTR callsign genealogy
Currently held by Torres-Rodriguez, Ramon
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 KP4RTR's current licensee, walking backwards.
- Torres-Rodriguez, RamonPRgranted 2018-11-13cancelled 2020-04-14
Successor callsigns
Callsigns held now by people who previously held KP4RTR.
No current licensee on record previously held this callsign.