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KO4MDI

Available2x3District 4

No competing applications on record.

License HolderHumphrey, Darrell W

License ClassGeneral

Min. Class RequiredTechnician

LocationCharlotte, NC

Grant DateFeb 8, 2021

Expiration DateFeb 8, 2031

Cancellation DateFeb 1, 2022

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KO4MDI

Available2x3District 4

No competing applications on record.

License HolderHumphrey, Darrell W

License ClassGeneral

Min. Class RequiredTechnician

LocationCharlotte, NC

Grant DateFeb 8, 2021

Expiration DateFeb 8, 2031

Cancellation DateFeb 1, 2022

Available for ApplicationsFeb 2, 2024

KO4MDI is a 2x3 format amateur radio callsign. It is currently registered to Humphrey, Darrell W in Charlotte, NC. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.

CW & Voice Analysis

Morse Code

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

CW Weight: 36 units(Moderate)

Voice Phonetics

Kilo Oscar Four Mike Delta India

Readability: 7.5/10(High readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License CanceledFeb 1, 2022
License ModifiedJan 10, 2022
System-Generated GrantFeb 8, 2021
License IssuedFeb 8, 2021

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

No competing applications on record. Verify on the FCC ULS application search before filing.

Search external databases

QRZ ↗HamQTH ↗

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← KO4MDH KO4MDJ →

FCC data as of Sep 4, 2026

Is KO4MDI Available? FCC Vanity Status & Watchlist