KB7RM
Active2x2District 7
Competitive callsign — 5 applications filed with the FCC.
License HolderBUTTERFIELD, MIKE J
License ClassAdvanced
Min. Class RequiredGeneral
LocationSierra Vista, AZ
Grant DateApr 16, 2025
Expiration DateMar 27, 2035
KB7RM is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by BUTTERFIELD, MIKE J in Sierra Vista, AZ. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by BUTTERFIELD, MIKE J on Mar 9, 2015. KB7RM has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -... --... .-. --
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Bravo Seven Romeo Mike
Readability: 7.5/10(High readability)
License History
- License RenewedApr 16, 2025
- License IssuedMar 27, 2015
- Vanity Callsign GrantedMar 27, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.