K4MRZ
Active1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderMohr, Brian D
License ClassGeneral
Min. Class RequiredGeneral
LocationHilton, NY
Grant DateOct 27, 2020
Expiration DateOct 27, 2030
K4MRZ is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Mohr, Brian D in Hilton, NY. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Holtzworth, Martha K on Jun 12, 2025. K4MRZ has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -- .-. --..
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Four Mike Romeo Zulu
Readability: 8/10(High readability)
License History
- Administrative Update AppliedDec 15, 2021
- License ModifiedJun 28, 2021
- Administrative Update AppliedMay 12, 2021
- License IssuedOct 27, 2020
- Vanity Callsign GrantedOct 27, 2020
- License ExpiredApr 29, 2014
- Administrative Update AppliedSep 11, 2002
- License RenewedJan 29, 2002
- Tax ID (TIN) AddedJan 29, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.