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K4RDX

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderRare DX Club Of Florida

Min. Class RequiredGeneral

LocationHudson, FL

Grant DateApr 28, 2018

Expiration DateJun 2, 2028

K4RDX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Rare DX Club Of Florida in Hudson, FL. 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 Cook, Aaron on Sep 2, 2026. K4RDX has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Kilo Four Romeo Delta X-ray

Readability: 7.5/10(High readability)

License History

License RenewedApr 28, 2018
License RenewedMar 18, 2008
Administrative Update AppliedAug 25, 2006

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Cook, AaronFiled Sep 2, 2026
PendingFCC ↗

Search external databases

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← K4RDW K4RDY →

FCC data as of Sep 4, 2026

K4RDX FCC Vanity Status: 1 Competing Application & History