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KJ4JRK

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderFrost, Rick E

License ClassTechnician

Min. Class RequiredTechnician

LocationKnoxville, TN

Grant DateFeb 23, 2009

Expiration DateFeb 23, 2019

Cancellation DateJul 31, 2009

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KJ4JRK

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderFrost, Rick E

License ClassTechnician

Min. Class RequiredTechnician

LocationKnoxville, TN

Grant DateFeb 23, 2009

Expiration DateFeb 23, 2019

Cancellation DateJul 31, 2009

Available for ApplicationsAug 1, 2011

KJ4JRK is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Frost, Rick E in Knoxville, 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 Kellett, John R on Apr 20, 2017. KJ4JRK has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 46 units(Heavy (slower to send))

Voice Phonetics

Kilo Juliet Four Juliet Romeo Kilo

Readability: 6/10(Good readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License CanceledJul 31, 2009
System-Generated GrantFeb 23, 2009
License IssuedFeb 23, 2009

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Kellett, John RFiled Apr 20, 2017
Not awardedFCC ↗

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← KJ4JRJ KJ4JRL →

FCC data as of Sep 12, 2026

KJ4JRK FCC Vanity Status: 1 Competing Application & History