N1OS
Active1x2District 1
Competitive callsign — 31 applications filed with the FCC.
License HolderBuliszak, Mark J
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationChelmsford, MA
Grant DateJun 14, 2022
Expiration DateJul 12, 2032
N1OS is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Buliszak, Mark J in Chelmsford, MA. This callsign has attracted significant interest in the amateur radio community, with 31 vanity applications filed with the FCC. The most recent was submitted by Buliszak, Mark J on Jun 24, 2002. N1OS has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. .---- --- ...
CW Weight: 29 units(Light (fast to send))
Voice Phonetics
November One Oscar Sierra
Readability: 7.5/10(High readability)
License History
- License RenewedJun 14, 2022
- License RenewedJul 7, 2012
- License IssuedJul 12, 2002
- Vanity Callsign GrantedJul 12, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.