Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP3EM callsign genealogy
Currently held by SANTIAGO RAMOS, DIEGO
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 NP3EM's current licensee, walking backwards.
- MARTINEZ SANCHEZ, EDWINPRgranted 2012-03-08cancelled 2020-01-17
Successor callsigns
Callsigns held now by people who previously held NP3EM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP3EM, oldest first.
- SANTIAGO RAMOS, DIEGO PR2006-06-17 → cancelled 2018-08-15
- MARTINEZ SANCHEZ, EDWIN PR2020-01-17 active