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KJ4SR

Available2x2District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderSwain, Robert

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationCoronado, CA

Grant DateJan 11, 2013

Expiration DateJan 11, 2023

Cancellation DateApr 27, 2021

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KJ4SR

Available2x2District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderSwain, Robert

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationCoronado, CA

Grant DateJan 11, 2013

Expiration DateJan 11, 2023

Cancellation DateApr 27, 2021

Available for ApplicationsApr 28, 2023

KJ4SR is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Swain, Robert in Coronado, CA. 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 Swain, Robert D on Dec 24, 2012. KJ4SR has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Kilo Juliet Four Sierra Romeo

Readability: 6.5/10(Good readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (2x2).

License History

License CanceledApr 27, 2021
Administrative Update AppliedNov 19, 2020
License IssuedJan 11, 2013
Vanity Callsign GrantedJan 11, 2013

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Swain, Robert DFiled Dec 24, 2012
Not awardedFCC ↗
ROBERTSON, JOHN SFiled Aug 1, 2002
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 11, 2026

KJ4SR FCC Vanity Status: 2 Competing Applications & History