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K4YBX

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderVACCARO, ADAM R

License ClassTechnician

Min. Class RequiredGeneral

LocationBOSTON, MA

Grant DateMay 6, 2008

Expiration DateMay 6, 2018

Cancellation DateMay 7, 2020

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K4YBX

Available1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderVACCARO, ADAM R

License ClassTechnician

Min. Class RequiredGeneral

LocationBOSTON, MA

Grant DateMay 6, 2008

Expiration DateMay 6, 2018

Cancellation DateMay 7, 2020

Available for ApplicationsMay 7, 2020

K4YBX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by VACCARO, ADAM R in BOSTON, MA. 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 Brown, Larry G on Apr 17, 2008. K4YBX has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 38 units(Moderate)

Voice Phonetics

Kilo Four Yankee Bravo X-ray

Readability: 8/10(High readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (1x3).

License History

License ExpiredMay 7, 2020
License IssuedMay 6, 2008
Vanity Callsign GrantedMay 6, 2008

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Brown, Larry GFiled Apr 17, 2008
Not awardedFCC ↗

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FCC data as of Sep 4, 2026

K4YBX FCC Vanity Status: 1 Competing Application & History