K5TXU
Available1x3District 5
Competitive callsign — 6 applications filed with the FCC.
License HolderMuffler, Robert J
License ClassTechnician
Min. Class RequiredGeneral
LocationSt Louis, MO
Grant DateJul 18, 2008
Expiration DateJul 18, 2018
Cancellation DateJul 21, 2020
Available for ApplicationsJul 19, 2020
K5TXU is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Muffler, Robert J in St Louis, MO. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Hernandez, Lisa on Apr 24, 2025. K5TXU has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ..... - -..- ..-
CW Weight: 28 units(Light (fast to send))
Voice Phonetics
Kilo Five Tango X-ray Uniform
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredJul 21, 2020
- Administrative Update AppliedMay 23, 2013
- License IssuedJul 18, 2008
- Vanity Callsign GrantedJul 18, 2008
- License CanceledAug 15, 2003
- License IssuedApr 21, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.