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K4USO

Expired1x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderDailey, Donald R

License ClassGeneral

Min. Class RequiredGeneral

LocationLEESBURG, VA

Grant DateOct 17, 2014

Expiration DateJan 13, 2025

Available for ApplicationsJan 14, 2027

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K4USO

Expired1x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderDailey, Donald R

License ClassGeneral

Min. Class RequiredGeneral

LocationLEESBURG, VA

Grant DateOct 17, 2014

Expiration DateJan 13, 2025

Available for ApplicationsJan 14, 2027

K4USO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Dailey, Donald R in LEESBURG, VA. 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 CHILDRESS, RONALD on Aug 20, 2024. K4USO has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 31 units(Moderate)

Voice Phonetics

Kilo Four Uniform Sierra Oscar

Readability: 7/10(Good readability)

Available Jan 14, 2027 (132 days remaining)

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

License History

License RenewedOct 17, 2014
License ModifiedOct 14, 2000

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

CHILDRESS, RONALDFiled Aug 20, 2024
Not awardedFCC ↗
CHILDRESS, RONALDFiled Jul 30, 2024
DismissedFCC ↗

Search external databases

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← K4USN K4USR →

FCC data as of Sep 3, 2026

K4USO FCC Vanity Status: 2 Competing Applications & History