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KU3H

Active2x1District 3

Competitive callsign — 7 applications filed with the FCC.

License HolderWallin, Mark J

License ClassAmateur Extra

Min. Class RequiredAmateur Extra

LocationPhiladelphia, PA

Grant DateAug 13, 2026

Expiration DateOct 25, 2036

KU3H is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by Wallin, Mark J in Philadelphia, PA. This callsign has attracted significant interest in the amateur radio community, with 7 vanity applications filed with the FCC. The most recent was submitted by Clark, Mark A on Oct 24, 2016. KU3H has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 25 units(Light (fast to send))

Voice Phonetics

Kilo Uniform Three Hotel

Readability: 8/10(High readability)

License History

License RenewedAug 13, 2026
License IssuedOct 25, 2016
Vanity Callsign GrantedOct 25, 2016
License ExpiredOct 5, 2016
Tax ID (TIN) AddedMay 31, 2005
License RenewedMay 31, 2005

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Clark, Mark AFiled Oct 24, 2016
DismissedFCC ↗
CARLIS, ANTHONYFiled Oct 24, 2016
DismissedFCC ↗
Wallin, Mark JFiled Oct 5, 2016
Not awardedFCC ↗
CARLIS, ANTHONYFiled Oct 4, 2016

Search external databases

QRZ ↗HamQTH ↗

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FCC data as of Sep 12, 2026

Dismissed

PAYNE, CURTIS HFiled Oct 4, 2016

DismissedFCC ↗

PAYNE, CURTIS HFiled Sep 28, 2016

DismissedFCC ↗

Pham, Thien TFiled Sep 19, 2016

DismissedFCC ↗

KU3H FCC Vanity Status: 7 Competing Applications & History