KR4MB
Available2x2District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderCARPENTER, BILLIE R
License ClassAdvanced
Min. Class RequiredGeneral
LocationGASTONIA, NC
Grant DateOct 22, 2003
Expiration DateJan 18, 2014
Cancellation DateJan 19, 2016
Available for ApplicationsJan 19, 2016
KR4MB is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by CARPENTER, BILLIE R in GASTONIA, NC. 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 Buckaloo, Michael D on Dec 29, 2025. KR4MB has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- -- -...
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Romeo Four Mike Bravo
Readability: 8/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredJan 19, 2016
- Tax ID (TIN) AddedOct 22, 2003
- License RenewedOct 22, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.