NN4DP
Available2x2District 4
Competitive callsign — 5 applications filed with the FCC.
License HolderMARTIN, WILLIAM H
License ClassNovice
Min. Class RequiredGeneral
LocationLUDLOW, MA
Grant DateApr 9, 2002
Expiration DateApr 9, 2012
Cancellation DateApr 29, 2003
Available for ApplicationsApr 30, 2005
NN4DP is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by MARTIN, WILLIAM H in LUDLOW, MA. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Price, Douglas A on Nov 24, 2025. NN4DP has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. -. ....- -.. .--.
CW Weight: 28 units(Light (fast to send))
Voice Phonetics
November November Four Delta Papa
Readability: 7/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License CanceledApr 29, 2003
- License IssuedApr 9, 2002
- Vanity Callsign GrantedApr 9, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.