W4HO
Active1x2District 4
Competitive callsign — 12 applications filed with the FCC.
License HolderSims, David
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationBOULDER, CO
Grant DateMay 6, 2025
Expiration DateMay 6, 2035
W4HO is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by Sims, David in BOULDER, CO. This callsign has attracted significant interest in the amateur radio community, with 12 vanity applications filed with the FCC. The most recent was submitted by Funderburg, Sandy on May 5, 2025. W4HO has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- ....- .... ---
CW Weight: 27 units(Light (fast to send))
Voice Phonetics
Whiskey Four Hotel Oscar
Readability: 8.5/10(High readability)
License History
- License IssuedMay 6, 2025
- Vanity Callsign GrantedMay 6, 2025
- Internal Correction AppliedMar 17, 2025
- Internal Correction AppliedMar 17, 2025
- Administrative Update AppliedAug 31, 2017
- License RenewedSep 21, 2016
- License RenewedOct 17, 2006
- Tax ID (TIN) AddedOct 12, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.