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K9CSE

Active1x3District 9

Competitive callsign — 1 application filed with the FCC.

License HolderMahoney, Sean P

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationSan Dimas, CA

Grant DateMay 18, 2021

Expiration DateMay 18, 2031

K9CSE is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Mahoney, Sean P in San Dimas, CA. 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 Mahoney, Sean P on Apr 28, 2021. K9CSE has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Kilo Nine Charlie Sierra Echo

Readability: 7.5/10(High readability)

License History

License IssuedMay 18, 2021
Vanity Callsign GrantedMay 18, 2021
Internal Correction AppliedMar 28, 2014
Internal Correction AppliedMar 28, 2014
License RenewedJan 2, 2014
Tax ID (TIN) AddedJan 8, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Mahoney, Sean PFiled Apr 28, 2021
Not awardedFCC ↗

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FCC data as of Jul 31, 2026

K9CSE FCC Vanity Status: 1 Competing Application & History