KB4MR
Available2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderFields, Robert Lee
License ClassGeneral
Min. Class RequiredGeneral
LocationFolsom, PA
Grant DateMar 12, 2015
Expiration DateApr 26, 2025
Cancellation DateMay 24, 2024
Available for ApplicationsMay 25, 2026
KB4MR is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Fields, Robert Lee in Folsom, PA. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Lopez, Fred C on Jul 22, 2025. KB4MR has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -... ....- -- .-.
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Bravo Four Mike Romeo
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 CanceledMay 24, 2024
- Administrative Update AppliedMay 7, 2024
- Administrative Update AppliedApr 30, 2024
- License ModifiedJul 17, 2015
- License RenewedMar 12, 2015
- Administrative Update AppliedAug 1, 2014
- Administrative Update AppliedFeb 13, 2013
- License RenewedApr 26, 2005
- Administrative Update AppliedApr 16, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Lopez, Fred CFiled Jul 22, 2025DismissedFCC ↗