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/K4RTW

← Back to results

K4RTW

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderRatliff, Karen

License ClassGeneral

Min. Class RequiredGeneral

LocationOak Ridge, TN

Grant DateApr 3, 2018

Expiration DateMay 30, 2028

K4RTW is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Ratliff, Karen in Oak Ridge, TN. 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 Ratliff-Trotter, Karen on May 12, 2008. K4RTW has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 29 units(Light (fast to send))

Voice Phonetics

Kilo Four Romeo Tango Whiskey

Readability: 7.5/10(High readability)

License History

Administrative Update AppliedJan 6, 2023
License RenewedApr 3, 2018
License IssuedMay 30, 2008
Vanity Callsign GrantedMay 30, 2008

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Ratliff-Trotter, KarenFiled May 12, 2008
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K4RTV K4RTX →

FCC data as of Sep 3, 2026

K4RTW FCC Vanity Status: 1 Competing Application & History