K6DUF
Available1x3District 6
Competitive callsign — 2 applications filed with the FCC.
License HolderSiess, Matthew A
License ClassGeneral
Min. Class RequiredGeneral
LocationCoopersburg, PA
Grant DateJun 25, 2013
Expiration DateJun 25, 2023
Cancellation DateJun 26, 2025
Available for ApplicationsJun 26, 2025
K6DUF is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Siess, Matthew A in Coopersburg, PA. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Siess, Matthew A on Jun 5, 2013. K6DUF has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.... -.. ..- ..-.
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Six Delta Uniform Foxtrot
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredJun 26, 2025
- Administrative Update AppliedSep 8, 2021
- Administrative Update AppliedFeb 12, 2015
- Administrative Update AppliedJul 2, 2013
- License IssuedJun 25, 2013
- Vanity Callsign GrantedJun 25, 2013
Vanity Application Activity
Competing applications filed with the FCC for this callsign.