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KK4RDU

Available2x3District 4

No competing applications on record.

License HolderROJOWSKI, JENNIFER A

License ClassGeneral

Min. Class RequiredTechnician

LocationDETROIT, MI

Grant DateMay 15, 2013

Expiration DateMay 15, 2023

Cancellation DateMay 16, 2025

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KK4RDU

Available2x3District 4

No competing applications on record.

License HolderROJOWSKI, JENNIFER A

License ClassGeneral

Min. Class RequiredTechnician

LocationDETROIT, MI

Grant DateMay 15, 2013

Expiration DateMay 15, 2023

Cancellation DateMay 16, 2025

Available for ApplicationsMay 16, 2025

KK4RDU is a 2x3 format amateur radio callsign. It is currently registered to ROJOWSKI, JENNIFER A in DETROIT, MI. 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 Kilo Four Romeo Delta Uniform

Readability: 6.5/10(Good readability)

This callsign is available now

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

License History

License ExpiredMay 16, 2025
System-Generated GrantMay 15, 2013
License IssuedMay 15, 2013

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

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FCC data as of Jul 31, 2026

Is KK4RDU Available? FCC Vanity Status & Watchlist