K4MKS
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderSIDEL, M KENT
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationAiken, SC
Grant DateAug 12, 2026
Expiration DateNov 4, 2036
K4MKS is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by SIDEL, M KENT in Aiken, SC. 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 SMITH, MELVIN K on Oct 6, 1999. K4MKS has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -- -.- ...
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Four Mike Kilo Sierra
Readability: 8/10(High readability)
License History
- License RenewedAug 12, 2026
- Administrative Update AppliedJan 31, 2026
- License RenewedAug 17, 2016
- Administrative Update AppliedJan 30, 2010
- Administrative Update AppliedMar 18, 2008
- License RenewedOct 28, 2006
- Tax ID (TIN) AddedOct 24, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.