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KD4RBU

Available2x3District 4

No competing applications on record.

License HolderWalter, David B

License ClassAmateur Extra

Min. Class RequiredTechnician

LocationSeattle, WA

Grant DateJul 6, 2012

Expiration DateJul 21, 2022

Cancellation DateJul 23, 2024

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KD4RBU

Available2x3District 4

No competing applications on record.

License HolderWalter, David B

License ClassAmateur Extra

Min. Class RequiredTechnician

LocationSeattle, WA

Grant DateJul 6, 2012

Expiration DateJul 21, 2022

Cancellation DateJul 23, 2024

Available for ApplicationsJul 22, 2024

KD4RBU is a 2x3 format amateur radio callsign. It is currently registered to Walter, David B in Seattle, WA. 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: 35 units(Moderate)

Voice Phonetics

Kilo Delta Four Romeo Bravo 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 ExpiredJul 23, 2024
License RenewedJul 6, 2012
License RenewedAug 2, 2002

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 Sep 4, 2026

Is KD4RBU Available? FCC Vanity Status & Watchlist