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K4UOT

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderEdge Of Space Sciences (EOSS)

Min. Class RequiredGeneral

LocationLittleton, CO

Grant DateMay 2, 2014

Expiration DateJun 2, 2024

Cancellation DateJun 3, 2026

Available for ApplicationsJun 3, 2026

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K4UOT

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderEdge Of Space Sciences (EOSS)

Min. Class RequiredGeneral

LocationLittleton, CO

Grant DateMay 2, 2014

Expiration DateJun 2, 2024

Cancellation DateJun 3, 2026

Available for ApplicationsJun 3, 2026

K4UOT is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Edge Of Space Sciences (EOSS) in Littleton, CO. 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 FITTS, MARLIN J on May 12, 2004. K4UOT has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 31 units(Moderate)

Voice Phonetics

Kilo Four Uniform Oscar Tango

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 ExpiredJun 3, 2026
License RenewedMay 2, 2014
Administrative Update AppliedJul 23, 2010
License IssuedJun 2, 2004
Vanity Callsign GrantedJun 2, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

FITTS, MARLIN JFiled May 12, 2004
Not awardedFCC ↗

Search external databases

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← K4UOS K4UOX →

FCC data as of Sep 4, 2026

K4UOT FCC Vanity Status: 1 Competing Application & History