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K3CO

Active1x2District 3

Competitive callsign — 1 application filed with the FCC.

License HolderWaltrop Jr, Frank K

License ClassAmateur Extra

Min. Class RequiredAmateur Extra

LocationChalfont, PA

Grant DateAug 13, 2025

Expiration DateAug 13, 2035

K3CO is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Waltrop Jr, Frank K in Chalfont, PA. 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 Waltrop Jr, Frank K on Jan 12, 2004. K3CO has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 33 units(Moderate)

Voice Phonetics

Kilo Three Charlie Oscar

Readability: 8.5/10(High readability)

License History

License RenewedAug 13, 2025
License RenewedNov 30, 2013
License IssuedJan 30, 2004
Vanity Callsign GrantedJan 30, 2004
License ExpiredDec 18, 2003

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Waltrop Jr, Frank KFiled Jan 12, 2004
Not awardedFCC ↗

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FCC data as of Sep 4, 2026

K3CO FCC Vanity Status: 1 Competing Application & History