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KR1STF

Active2x3District 1

Competitive callsign — 1 application filed with the FCC.

License HolderKristoffersen, Carl

License ClassTechnician

Min. Class RequiredTechnician

LocationRidgefield, CT

Grant DateFeb 17, 2021

Expiration DateFeb 17, 2031

KR1STF is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Kristoffersen, Carl in Ridgefield, CT. 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 Kristoffersen, Carl on Jan 28, 2021. KR1STF has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 37 units(Moderate)

Voice Phonetics

Kilo Romeo One Sierra Tango Foxtrot

Readability: 6.5/10(Good readability)

License History

License IssuedFeb 17, 2021
Vanity Callsign GrantedFeb 17, 2021

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Kristoffersen, CarlFiled Jan 28, 2021
Not awardedFCC ↗

Search external databases

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FCC data as of Sep 12, 2026

KR1STF FCC Vanity Status: 1 Competing Application & History