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FCC data sourced from FCC Universal Licensing System. Not affiliated with the FCC.

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K0RU

Active1x2District 0

Competitive callsign — 1 application filed with the FCC.

License HolderUNDERWOOD, ROBERT D

License ClassAmateur Extra

Min. Class RequiredAmateur Extra

LocationHOMELAND, CA

Grant DateJul 2, 2026

Expiration DateMay 23, 2036

K0RU is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by UNDERWOOD, ROBERT D in HOMELAND, CA. 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 UNDERWOOD, ROBERT D on May 4, 2006. K0RU has 9 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Kilo Zero Romeo Uniform

Readability: 7/10(Good readability)

License History

Administrative Update AppliedJul 2, 2026
License RenewedJul 2, 2026
Administrative Update AppliedSep 7, 2022
Administrative Update AppliedApr 20, 2022
License RenewedMar 17, 2016
Vanity Callsign GrantedMay 23, 2006
License IssuedMay 23, 2006
Internal Correction AppliedMay 17, 2006
Internal Correction AppliedMay 17, 2006

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

UNDERWOOD, ROBERT DFiled May 4, 2006
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 3, 2026

K0RU FCC Vanity Status: 1 Competing Application & History