K6EF
Active1x2District 6
Competitive callsign — 3 applications filed with the FCC.
License HolderCohen, Mark S
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationFoster City, CA
Grant DateMay 7, 2025
Expiration DateAug 2, 2035
K6EF is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Cohen, Mark S in Foster City, CA. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by SMITH, ERIC J on Jul 6, 2009. K6EF has 10 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.... . ..-.
CW Weight: 21 units(Light (fast to send))
Voice Phonetics
Kilo Six Echo Foxtrot
Readability: 8.5/10(High readability)
License History
- License RenewedMay 7, 2025
- Administrative Update AppliedApr 18, 2019
- License RenewedMay 14, 2015
- Administrative Update AppliedJun 6, 2014
- Administrative Update AppliedApr 19, 2011
- Administrative Update AppliedSep 1, 2006
- Vanity Callsign GrantedAug 2, 2005
- License IssuedAug 2, 2005
- Internal Correction AppliedJul 21, 2005
- Internal Correction AppliedJul 21, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.