CFCallsignFinder

Search Watchlist

Track FCC amateur radio vanity callsign availability. Data updated daily.

Legal & Info

Pricing FAQ Terms of Service Privacy Policy

© 2026 CallsignFinder. All rights reserved.

FCC data sourced from FCC Universal Licensing System. Not affiliated with the FCC.

Watchlist Search Account

Home/Search/W4DHR

← Back to results

W4DHR

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderMarshall, William F

License ClassTechnician

Min. Class RequiredGeneral

LocationLouisville, KY

Grant DateSep 12, 2023

Expiration DateOct 17, 2033

W4DHR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Marshall, William F in Louisville, KY. 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 Marshall, William F on Sep 16, 2013. W4DHR has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 28 units(Light (fast to send))

Voice Phonetics

Whiskey Four Delta Hotel Romeo

Readability: 7.5/10(High readability)

License History

License RenewedSep 12, 2023
License IssuedOct 17, 2013
Vanity Callsign GrantedOct 17, 2013

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Marshall, William FFiled Sep 16, 2013
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← W4DHP W4DHS →

FCC data as of Sep 4, 2026

W4DHR FCC Vanity Status: 1 Competing Application & History