W6MKL
Active1x3District 6
Competitive callsign — 2 applications filed with the FCC.
License HolderHeiser Jr., William W
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationTwain Harte, CA
Grant DateJun 13, 2026
Expiration DateJun 13, 2036
W6MKL is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Heiser Jr., William W in Twain Harte, CA. 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 Heiser Jr., William W on May 26, 2026. W6MKL has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- -.... -- -.- .-..
CW Weight: 33 units(Moderate)
Voice Phonetics
Whiskey Six Mike Kilo Lima
Readability: 8.5/10(High readability)
License History
- License IssuedJun 13, 2026
- Vanity Callsign GrantedJun 13, 2026
- License CanceledFeb 12, 2022
- License ModifiedMay 14, 2021
- Vanity Callsign GrantedApr 9, 2021
- License IssuedApr 9, 2021
- License ExpiredMar 21, 2018
- Tax ID (TIN) AddedJan 11, 2006
- License RenewedJan 11, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.