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KC3RTK

Active2x3District 3

Competitive callsign — 1 application filed with the FCC.

License HolderSchmelzlen, Isaac

License ClassTechnician

Min. Class RequiredTechnician

LocationCarmichaels, PA

Grant DateApr 1, 2021

Expiration DateApr 1, 2031

KC3RTK is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Schmelzlen, Isaac in Carmichaels, 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 KING, RICK T on Apr 21, 2017. KC3RTK has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 39 units(Moderate)

Voice Phonetics

Kilo Charlie Three Romeo Tango Kilo

Readability: 7/10(Good readability)

License History

System-Generated GrantApr 1, 2021
License IssuedApr 1, 2021

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

KING, RICK TFiled Apr 21, 2017
Not awardedFCC ↗

Search external databases

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Explore nearby callsigns

← KC3RTJ KC3RTL →

FCC data as of Sep 3, 2026

KC3RTK FCC Vanity Status: 1 Competing Application & History