Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NP4CR callsign genealogy
Currently held by ALVARADO, ALGEO
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 NP4CR's current licensee, walking backwards.
- Molina Ramirez, Carlos RPRgranted 2015-12-03cancelled 2020-12-15
Successor callsigns
Callsigns held now by people who previously held NP4CR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP4CR, oldest first.
- ALVARADO, ALGEO PR1997-03-10 → cancelled 2009-03-11
- Cabo Rojo DX Hunters Club PR2010-07-09 → cancelled 2018-09-05
- Molina Ramirez, Carlos R PR2020-12-15 active