K6RDX
Active1x3District 6
Competitive callsign — 1 application filed with the FCC.
License HolderHollimon, Marshall H
License ClassGeneral
Min. Class RequiredGeneral
LocationCupertino, CA
Grant DateSep 18, 2025
Expiration DateDec 15, 2035
K6RDX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Hollimon, Marshall H in Cupertino, CA. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Cook, Aaron on Sep 2, 2026. K6RDX has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.... .-. -.. -..-
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo Six Romeo Delta X-ray
Readability: 7.5/10(High readability)
License History
- License RenewedSep 18, 2025
- License RenewedDec 1, 2015
- Tax ID (TIN) AddedDec 12, 2005
- License RenewedDec 12, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Cook, AaronFiled Sep 2, 2026Not awardedFCC ↗