WB4SIV
Active2x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderDarnell, Mark A
License ClassAmateur Extra
Min. Class RequiredTechnician
LocationJacksonville, FL
Grant DateDec 11, 2021
Expiration DateDec 11, 2031
WB4SIV is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Darnell, Mark A in Jacksonville, 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 Darnell, Mark A on Nov 29, 2021. WB4SIV has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.-- -... ....- ... .. ...-
CW Weight: 31 units(Moderate)
Voice Phonetics
Whiskey Bravo Four Sierra India Victor
Readability: 6.5/10(Good readability)
License History
- License ModifiedJun 7, 2022
- License IssuedDec 11, 2021
- Vanity Callsign GrantedDec 11, 2021
Vanity Application Activity
Competing applications filed with the FCC for this callsign.