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KW4FXD

Expired2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderCASTELL, ROBERT E

License ClassAdvanced

Min. Class RequiredTechnician

LocationCASTRO VALLEY, CA

Grant DateDec 20, 2014

Expiration DateMar 19, 2025

Available for ApplicationsMar 20, 2027

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KW4FXD

Expired2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderCASTELL, ROBERT E

License ClassAdvanced

Min. Class RequiredTechnician

LocationCASTRO VALLEY, CA

Grant DateDec 20, 2014

Expiration DateMar 19, 2025

Available for ApplicationsMar 20, 2027

KW4FXD is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by CASTELL, ROBERT E in CASTRO VALLEY, 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 Lippert, Robert C on Mar 1, 2005. KW4FXD has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 40 units(Moderate)

Voice Phonetics

Kilo Whiskey Four Foxtrot X-ray Delta

Readability: 7.5/10(High readability)

Available Mar 20, 2027 (233 days remaining)

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

License History

License RenewedDec 20, 2014
License IssuedMar 19, 2005
Vanity Callsign GrantedMar 19, 2005

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Lippert, Robert CFiled Mar 1, 2005
Not awardedFCC ↗

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← KW4FOX KW4GBV →

FCC data as of Jul 29, 2026

KW4FXD FCC Vanity Status: 1 Competing Application & History