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W1SDC

Active1x3District 1

Competitive callsign — 1 application filed with the FCC.

License HolderColburn, Samuel D

License ClassGeneral

Min. Class RequiredGeneral

LocationNorton, MA

Grant DateJul 24, 2018

Expiration DateJul 24, 2028

W1SDC is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Colburn, Samuel D in Norton, MA. 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 Colburn, Samuel D on Jul 6, 2018. W1SDC has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 36 units(Moderate)

Voice Phonetics

Whiskey One Sierra Delta Charlie

Readability: 7.5/10(High readability)

License History

Administrative Update AppliedJun 16, 2022
License IssuedJul 24, 2018
Vanity Callsign GrantedJul 24, 2018

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Colburn, Samuel DFiled Jul 6, 2018
Not awardedFCC ↗

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FCC data as of Sep 3, 2026

W1SDC FCC Vanity Status: 1 Competing Application & History