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N4XO

Active1x2District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderWhalen, T Kevin

License ClassTechnician

Min. Class RequiredAmateur Extra

LocationLoveland, CO

Grant DateDec 6, 2017

Expiration DateFeb 25, 2028

N4XO is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Whalen, T Kevin in Loveland, CO. 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 GENGE, FREDERICK C on Nov 22, 1999. N4XO has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 28 units(Light (fast to send))

Voice Phonetics

November Four X-ray Oscar

Readability: 8/10(High readability)

License History

License RenewedDec 6, 2017
Administrative Update AppliedJan 31, 2013
License RenewedApr 2, 2008

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

GENGE, FREDERICK CFiled Nov 22, 1999
Not awardedFCC ↗
MC CLATCHEY, WELBORN CFiled Nov 22, 1999
Not awardedFCC ↗

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FCC data as of Jul 30, 2026

N4XO FCC Vanity Status: 2 Competing Applications & History