NP4RM
Active2x2District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderRamirez-Machin, Oscar
License ClassGeneral
Min. Class RequiredGeneral
LocationToa Alta, PR
Grant DateApr 7, 2020
Expiration DateApr 7, 2030
NP4RM is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Ramirez-Machin, Oscar in Toa Alta, PR. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Ramirez-Machin, Oscar on Mar 18, 2020. NP4RM has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. .--. ....- .-. --
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
November Papa Four Romeo Mike
Readability: 7.5/10(High readability)
License History
- License ModifiedSep 2, 2025
- License IssuedApr 7, 2020
- Vanity Callsign GrantedApr 7, 2020
- License CanceledMar 16, 2018
- License ModifiedFeb 26, 2018
- Vanity Callsign GrantedFeb 17, 2018
- License IssuedFeb 17, 2018
- License ExpiredJan 8, 2011
Vanity Application Activity
Competing applications filed with the FCC for this callsign.