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KC8ZSU

Active2x3District 8

Competitive callsign — 1 application filed with the FCC.

License HolderHildreth, Robert S

License ClassGeneral

Min. Class RequiredTechnician

LocationMuskegon, MI

Grant DateApr 4, 2023

Expiration DateApr 4, 2033

KC8ZSU is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Hildreth, Robert S in Muskegon, MI. 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 Hildreth, Robert S on Mar 16, 2023. KC8ZSU has 10 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 42 units(Heavy (slower to send))

Voice Phonetics

Kilo Charlie Eight Zulu Sierra Uniform

Readability: 6.5/10(Good readability)

License History

Administrative Update AppliedJul 1, 2026
License ModifiedMay 17, 2023
License IssuedApr 4, 2023
Vanity Callsign GrantedApr 4, 2023
License CanceledJul 3, 2015
Administrative Update AppliedJun 16, 2015
License RenewedMar 7, 2015
Administrative Update AppliedFeb 15, 2011
Administrative Update AppliedApr 8, 2008
License IssuedMay 13, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Hildreth, Robert SFiled Mar 16, 2023
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← KC8ZST KC8ZSV →

FCC data as of Sep 4, 2026

KC8ZSU FCC Vanity Status: 1 Competing Application & History