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N4KDO

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderBROWN, MELISSA D

License ClassTechnician

Min. Class RequiredGeneral

LocationSIMPSONVILLE, SC

Grant DateJun 9, 2004

Expiration DateAug 6, 2014

Cancellation DateAug 9, 2016

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N4KDO

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderBROWN, MELISSA D

License ClassTechnician

Min. Class RequiredGeneral

LocationSIMPSONVILLE, SC

Grant DateJun 9, 2004

Expiration DateAug 6, 2014

Cancellation DateAug 9, 2016

Available for ApplicationsAug 7, 2016

N4KDO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by BROWN, MELISSA D in SIMPSONVILLE, SC. 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 Horne, Ron on Jun 25, 2026. N4KDO has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

November Four Kilo Delta Oscar

Readability: 7.5/10(High readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (1x3).

License History

License ExpiredAug 9, 2016
Tax ID (TIN) AddedJun 9, 2004
License RenewedJun 9, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Horne, RonFiled Jun 25, 2026
Not awardedFCC ↗

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FCC data as of Sep 3, 2026

N4KDO FCC Vanity Status: 1 Competing Application & History