N5MK
Active1x2District 5
Competitive callsign — 10 applications filed with the FCC.
License HolderHeller, Michael D
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationGlen Rock, NJ
Grant DateMar 24, 2026
Expiration DateMar 24, 2036
N5MK is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Heller, Michael D in Glen Rock, NJ. This callsign has attracted significant interest in the amateur radio community, with 10 vanity applications filed with the FCC. The most recent was submitted by Kretchmar, Phillip G on Mar 16, 2026. N5MK has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ..... -- -.-
CW Weight: 22 units(Light (fast to send))
Voice Phonetics
November Five Mike Kilo
Readability: 8.5/10(High readability)
License History
- Vanity Callsign GrantedMar 24, 2026
- License IssuedMar 24, 2026
- License ExpiredMar 7, 2026
- License RenewedDec 19, 2013
- Vanity Callsign GrantedFeb 10, 2004
- License IssuedFeb 10, 2004
- License CanceledFeb 19, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.