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/WD4CPU

← Back to results

WD4CPU

Active2x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderCOX, WILLIAM M

License ClassAdvanced

Min. Class RequiredTechnician

LocationMARIETTA, GA

Grant DateJun 5, 2020

Expiration DateJun 5, 2030

WD4CPU is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by COX, WILLIAM M in MARIETTA, GA. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Heggood, Stephen L on May 18, 2020. WD4CPU has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 40 units(Moderate)

Voice Phonetics

Whiskey Delta Four Charlie Papa Uniform

Readability: 7/10(Good readability)

License History

License IssuedJun 5, 2020
Vanity Callsign GrantedJun 5, 2020
License ExpiredJan 12, 2010

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Heggood, Stephen LFiled May 18, 2020
Not awardedFCC ↗
Mason, Robert FFiled Sep 24, 2018
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← WD4CPS WD4CQA →

FCC data as of Jul 29, 2026

WD4CPU FCC Vanity Status: 2 Competing Applications & History