W4MDX
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderKirby, Heather C
License ClassTechnician
Min. Class RequiredGeneral
LocationPalatka, FL
Grant DateMay 30, 2025
Expiration DateMay 30, 2035
W4MDX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Kirby, Heather C in Palatka, FL. 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 Kirby, Heather C on May 6, 2015. W4MDX has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- -- -.. -..-
CW Weight: 33 units(Moderate)
Voice Phonetics
Whiskey Four Mike Delta X-ray
Readability: 8.5/10(High readability)
License History
- License RenewedMay 30, 2025
- Vanity Callsign GrantedMay 27, 2015
- License IssuedMay 27, 2015
- Internal Correction AppliedMay 1, 2015
- Internal Correction AppliedMay 1, 2015
- License RenewedMay 4, 2004
- License RenewedMay 4, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.