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K6CSO

Active1x3District 6

Competitive callsign — 1 application filed with the FCC.

License HolderCSONGRADI, JOHN J

License ClassGeneral

Min. Class RequiredGeneral

LocationHILLSBOROGH, CA

Grant DateFeb 16, 2022

Expiration DateApr 27, 2032

K6CSO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by CSONGRADI, JOHN J in HILLSBOROGH, 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 CSONGRADI, JOHN J on Apr 9, 2012. K6CSO has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 34 units(Moderate)

Voice Phonetics

Kilo Six Charlie Sierra Oscar

Readability: 7.5/10(High readability)

License History

License RenewedFeb 16, 2022
License ModifiedOct 22, 2012
License IssuedApr 27, 2012
Vanity Callsign GrantedApr 27, 2012
License ExpiredMar 29, 2007

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

CSONGRADI, JOHN JFiled Apr 9, 2012
Not awardedFCC ↗

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FCC data as of Jul 31, 2026

K6CSO FCC Vanity Status: 1 Competing Application & History