K6MDH
Active1x3District 6
Competitive callsign — 6 applications filed with the FCC.
License HolderHardy, Mark D
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationSanta Clara, CA
Grant DateOct 10, 2018
Expiration DateDec 13, 2028
K6MDH is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Hardy, Mark D in Santa Clara, CA. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Haddon, Michael D on Apr 24, 2026. K6MDH has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.... -- -.. ....
CW Weight: 29 units(Light (fast to send))
Voice Phonetics
Kilo Six Mike Delta Hotel
Readability: 8.5/10(High readability)
License History
- License RenewedOct 10, 2018
- License IssuedDec 13, 2008
- Vanity Callsign GrantedDec 13, 2008
- License ExpiredJun 19, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.