Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4TSM callsign genealogy
Currently held by IRIZARRY RIBOT, 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 KP4TSM's current licensee, walking backwards.
- IRIZARRY RIBOT, RAMONPRgranted 2022-08-09cancelled 2022-09-13
Successor callsigns
Callsigns held now by people who previously held KP4TSM.
No current licensee on record previously held this callsign.