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K4COO

Active1x3District 4

Competitive callsign — 4 applications filed with the FCC.

License HolderVIRO, POLINA

License ClassGeneral

Min. Class RequiredGeneral

LocationBOX ELDER, SD

Grant DateJan 20, 2024

Expiration DateJan 20, 2034

K4COO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by VIRO, POLINA in BOX ELDER, SD. 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 VIRO, POLINA on Jan 2, 2024. K4COO has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 40 units(Moderate)

Voice Phonetics

Kilo Four Charlie Oscar Oscar

Readability: 8/10(High readability)

License History

License IssuedJan 20, 2024
Vanity Callsign GrantedJan 20, 2024
License ExpiredMay 6, 2021
License RenewedMar 7, 2009
Tax ID (TIN) AddedMar 6, 2009

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

VIRO, POLINAFiled Jan 2, 2024
Not awardedFCC ↗
TADLOCK, GUY MFiled May 22, 2023
Not awardedFCC ↗
Hoade, Russell WFiled Feb 8, 2022
Not awardedFCC ↗
GRANGER, DAVID BFiled May 5, 2021

Search external databases

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Explore nearby callsigns

← K4CON K4COP →

FCC data as of Sep 3, 2026

Dismissed

K4COO FCC Vanity Status: 4 Competing Applications & History