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W9CDU

Active1x3District 9

Competitive callsign — 1 application filed with the FCC.

License HolderNELSON, JOHN A

License ClassTechnician

Min. Class RequiredGeneral

LocationCONCORD, CA

Grant DateSep 19, 2025

Expiration DateOct 14, 2035

W9CDU is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by NELSON, JOHN A in CONCORD, CA. 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 Unger, Cory D on Sep 24, 2015. W9CDU has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 38 units(Moderate)

Voice Phonetics

Whiskey Nine Charlie Delta Uniform

Readability: 7.5/10(High readability)

License History

License RenewedSep 19, 2025
Administrative Update AppliedMay 25, 2022
License IssuedOct 14, 2015
Vanity Callsign GrantedOct 14, 2015
License ExpiredApr 14, 2015
License RenewedJan 22, 2003

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Unger, Cory DFiled Sep 24, 2015
Not awardedFCC ↗

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FCC data as of Jul 10, 2026

W9CDU FCC Vanity Status: 1 Competing Application & History