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KP4AO

Active2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderARECIBO OBSERVATORY RADIO CLUB

Min. Class RequiredGeneral

LocationArecibo, PR

Grant DateFeb 8, 2017

Expiration DateFeb 28, 2027

KP4AO is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by ARECIBO OBSERVATORY RADIO CLUB in Arecibo, PR. 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 OTERO-BRACERO, ARTURO on Mar 20, 2006. KP4AO has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 35 units(Moderate)

Voice Phonetics

Kilo Papa Four Alpha Oscar

Readability: 8/10(High readability)

License History

Administrative Update AppliedNov 22, 2023
License RenewedFeb 8, 2017
License ModifiedApr 5, 2010
License RenewedJan 27, 2007

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

OTERO-BRACERO, ARTUROFiled Mar 20, 2006
Not awardedFCC ↗

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FCC data as of Sep 4, 2026

KP4AO FCC Vanity Status: 1 Competing Application & History