N3OS
Active1x2District 3
Competitive callsign — 13 applications filed with the FCC.
License HolderMENTRO SR, GARY D
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationFriedens, PA
Grant DateJan 3, 2018
Expiration DateMar 28, 2028
N3OS is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by MENTRO SR, GARY D in Friedens, PA. This callsign has attracted significant interest in the amateur radio community, with 13 vanity applications filed with the FCC. The most recent was submitted by SMITH, JAMES P on Mar 19, 2008. N3OS has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ...-- --- ...
CW Weight: 25 units(Light (fast to send))
Voice Phonetics
November Three Oscar Sierra
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedAug 13, 2025
- Administrative Update AppliedSep 25, 2024
- License RenewedJan 3, 2018
- License IssuedMar 28, 2008
- Vanity Callsign GrantedMar 28, 2008
- Internal Correction AppliedAug 9, 2006
- Internal Correction AppliedAug 9, 2006
- License RenewedJul 23, 2002
- Tax ID (TIN) AddedJul 23, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.