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K7JKU

Active1x3District 7

Competitive callsign — 4 applications filed with the FCC.

License HolderSublette, Matthew C

License ClassTechnician

Min. Class RequiredGeneral

LocationMarana, AZ

Grant DateApr 10, 2026

Expiration DateApr 15, 2036

K7JKU is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Sublette, Matthew C in Marana, AZ. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by MEARS, SCOTT on Sep 23, 2020. K7JKU has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 38 units(Moderate)

Voice Phonetics

Kilo Seven Juliet Kilo Uniform

Readability: 6.5/10(Good readability)

License History

License RenewedApr 10, 2026
Administrative Update AppliedJan 3, 2020
Administrative Update AppliedAug 31, 2017
License IssuedApr 15, 2016
Vanity Callsign GrantedApr 15, 2016

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

MEARS, SCOTTFiled Sep 23, 2020
DismissedFCC ↗
Dougan, Thomas PFiled Feb 14, 2018
Not awardedFCC ↗
Blair, Brian CFiled Jun 8, 2017
Not awardedFCC ↗
Sublette, Matthew CFiled Mar 28, 2016

Search external databases

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Explore nearby callsigns

← K7JKT K7JKW →

FCC data as of Sep 4, 2026

Not awarded

K7JKU FCC Vanity Status: 4 Competing Applications & History