Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4RTC callsign genealogy
Currently held by Torres-Castro, Rafael A
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 KP4RTC's current licensee, walking backwards.
- Torres-Castro, Rafael APRgranted 2014-04-07cancelled 2018-06-05
Successor callsigns
Callsigns held now by people who previously held KP4RTC.
No current licensee on record previously held this callsign.