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N4KSB

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderBarthelme, Keith S

License ClassTechnician

Min. Class RequiredGeneral

LocationLakeland, FL

Grant DateJan 23, 2018

Expiration DateApr 12, 2028

N4KSB is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Barthelme, Keith S in Lakeland, FL. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Barthelme, Keith S on Mar 25, 2008. N4KSB has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

-. ....- -.- ... -...

CW Weight: 27 units(Light (fast to send))

Voice Phonetics

November Four Kilo Sierra Bravo

Readability: 7/10(Good readability)

License History

License RenewedJan 23, 2018
Administrative Update AppliedJan 18, 2012
License IssuedApr 12, 2008
Vanity Callsign GrantedApr 12, 2008

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Barthelme, Keith SFiled Mar 25, 2008
Not awardedFCC ↗

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FCC data as of Sep 4, 2026

N4KSB FCC Vanity Status: 1 Competing Application & History