K4TTO
Active1x3District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderMollnhauer Sr, Henry B
License ClassAdvanced
Min. Class RequiredGeneral
LocationOrlando, FL
Grant DateAug 3, 2017
Expiration DateOct 24, 2027
K4TTO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Mollnhauer Sr, Henry B in Orlando, FL. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Marx, Kathleen A on May 12, 2026. K4TTO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- - - ---
CW Weight: 29 units(Light (fast to send))
Voice Phonetics
Kilo Four Tango Tango Oscar
Readability: 8/10(High readability)
License History
- License RenewedAug 3, 2017
- Tax ID (TIN) AddedSep 24, 2007
- License RenewedSep 24, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.