N4OGL
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderKeiser, Mark A
License ClassGeneral
Min. Class RequiredGeneral
LocationSioux Falls, SD
Grant DateMar 1, 2017
Expiration DateMay 12, 2027
N4OGL is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Keiser, Mark A in Sioux Falls, SD. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Ogle, Jonathan D on Mar 6, 2026. N4OGL has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ....- --- --. .-..
CW Weight: 33 units(Moderate)
Voice Phonetics
November Four Oscar Golf Lima
Readability: 8/10(High readability)
License History
- Administrative Update AppliedJan 31, 2024
- Administrative Update AppliedAug 29, 2020
- License RenewedMar 1, 2017
- Administrative Update AppliedMay 27, 2015
- Administrative Update AppliedDec 12, 2014
- License RenewedApr 11, 2007
- Administrative Update AppliedOct 25, 2006
- Administrative Update AppliedOct 14, 2004
- License ModifiedJun 7, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.