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N8KTZ

Active1x3District 8

Competitive callsign — 1 application filed with the FCC.

License HolderSiebke, Marvin C

License ClassTechnician

Min. Class RequiredGeneral

LocationDavenport, IA

Grant DateApr 18, 2017

Expiration DateApr 18, 2027

N8KTZ is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Siebke, Marvin C in Davenport, IA. 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 Yoest, Linda L on Mar 30, 2017. N8KTZ has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 33 units(Moderate)

Voice Phonetics

November Eight Kilo Tango Zulu

Readability: 7.5/10(High readability)

License History

License ModifiedAug 11, 2025
License ModifiedJun 4, 2020
Administrative Update AppliedDec 28, 2019
Administrative Update AppliedJul 27, 2018
License IssuedApr 18, 2017
Vanity Callsign GrantedApr 18, 2017

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Yoest, Linda LFiled Mar 30, 2017
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 4, 2026

N8KTZ FCC Vanity Status: 1 Competing Application & History