Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4MT callsign genealogy
Currently held by RODRIGUEZ SANTIAGO, MIRIAM
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 KP4MT's current licensee, walking backwards.
- RODRIGUEZ SANTIAGO, MIRIAMPRgranted 2013-05-01cancelled 2014-08-19
Successor callsigns
Callsigns held now by people who previously held KP4MT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4MT, oldest first.
- BARRIEL, WILLIAM PR1998-10-28 → cancelled 2001-10-15
- RODRIGUEZ SANTIAGO, MIRIAM PR2014-08-19 → cancelled 2026-08-21