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/W4SLK

← Back to results

W4SLK

Active1x3District 4

Competitive callsign — 5 applications filed with the FCC.

License HolderFIGUEIREDO, VITOR M

License ClassTechnician

Min. Class RequiredGeneral

LocationKEARNEY, NJ

Grant DateJan 24, 2020

Expiration DateJan 24, 2030

W4SLK is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by FIGUEIREDO, VITOR M in KEARNEY, NJ. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Lang, Allen R on Jan 6, 2020. W4SLK has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 30 units(Light (fast to send))

Voice Phonetics

Whiskey Four Sierra Lima Kilo

Readability: 7.5/10(High readability)

License History

License IssuedJan 24, 2020
Vanity Callsign GrantedJan 24, 2020

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Lang, Allen RFiled Jan 6, 2020
Not awardedFCC ↗
Schantz, Douglas Darren DFiled Aug 9, 2013
Not awardedFCC ↗
Cylc, John FFiled May 12, 2010
Not awardedFCC ↗
SHULTIS, SCOTT AFiled Sep 4, 2001

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← W4SLJ W4SLL →

FCC data as of Sep 3, 2026

Not awarded

WHITE, SHANE AFiled Sep 4, 2001

Not awardedFCC ↗

W4SLK FCC Vanity Status: 5 Competing Applications & History