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KR4KFB

Cancelled2x3District 4

No competing applications on record.

License HolderKloss, Jason

License ClassGeneral

Min. Class RequiredTechnician

LocationLand O Lakes, FL

Grant DateFeb 3, 2026

Cancellation DateMar 21, 2026

Available for ApplicationsMar 22, 2028

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KR4KFB

Cancelled2x3District 4

No competing applications on record.

License HolderKloss, Jason

License ClassGeneral

Min. Class RequiredTechnician

LocationLand O Lakes, FL

Grant DateFeb 3, 2026

Cancellation DateMar 21, 2026

Available for ApplicationsMar 22, 2028

KR4KFB is a 2x3 format amateur radio callsign. It is currently registered to Kloss, Jason in Land O Lakes, FL. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.

CW & Voice Analysis

Morse Code

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

CW Weight: 38 units(Moderate)

Voice Phonetics

Kilo Romeo Four Kilo Foxtrot Bravo

Readability: 7/10(Good readability)

Available Mar 22, 2028 (564 days remaining)

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

License History

License CanceledMar 21, 2026
License IssuedMar 2, 2026
System-Generated GrantMar 2, 2026

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

No competing applications on record. Verify on the FCC ULS application search before filing.

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← KR4KFA KR4KFC →

FCC data as of Sep 4, 2026

Is KR4KFB Available? FCC Vanity Status & Watchlist