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K0MSO

Active1x3District 0

Competitive callsign — 5 applications filed with the FCC.

License HolderWatson, Leslie K

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationTucson, AZ

Grant DateDec 15, 2021

Expiration DateMar 6, 2032

K0MSO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Watson, Leslie K in Tucson, AZ. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by EATON, CHARLES T on Feb 17, 2012. K0MSO has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 40 units(Moderate)

Voice Phonetics

Kilo Zero Mike Sierra Oscar

Readability: 7.5/10(High readability)

License History

Administrative Update AppliedOct 25, 2022
License RenewedDec 15, 2021
Administrative Update AppliedOct 5, 2018
License IssuedMar 6, 2012
Vanity Callsign GrantedMar 6, 2012

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

EATON, CHARLES TFiled Feb 17, 2012
Not awardedFCC ↗
HILDEBRAND, JOHN DFiled Jul 10, 2006
Not awardedFCC ↗
Langdon, Donald PFiled Jul 10, 2006
Not awardedFCC ↗
Gudmunsen, Richard GFiled Feb 11, 2004

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K0MSM K0MSP →

FCC data as of Sep 3, 2026

Not awarded

Whitehill, Eric RFiled Jan 13, 2004

Not awardedFCC ↗

K0MSO FCC Vanity Status: 5 Competing Applications & History