W4CKI
Cancelled1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderTANNENBAUM, DAVID C
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationAustin, TX
Grant DateFeb 19, 2016
Cancellation DateSep 17, 2024
Available for ApplicationsSep 18, 2026
W4CKI is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by TANNENBAUM, DAVID C in Austin, TX. 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 Elkins, Mary A on Feb 1, 2016. W4CKI has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- -.-. -.- ..
CW Weight: 31 units(Moderate)
Voice Phonetics
Whiskey Four Charlie Kilo India
Readability: 7.5/10(High readability)
Available Sep 18, 2026 (13 days remaining)
Requires General license or higher to apply for this callsign format (1x3).
License History
- License CanceledSep 17, 2024
- License IssuedFeb 19, 2016
- Vanity Callsign GrantedFeb 19, 2016
- License CanceledSep 21, 2010
- Administrative Update AppliedAug 11, 2010
- License IssuedFeb 9, 2007
- Vanity Callsign GrantedFeb 9, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.