KR4MTK
Active2x3District 4
No competing applications on record.
License HolderHerrera, Mark R
License ClassGeneral
Min. Class RequiredTechnician
LocationAlexandria, VA
Grant DateJun 10, 2026
Expiration DateJun 10, 2036
KR4MTK is a 2x3 format amateur radio callsign. It is currently registered to Herrera, Mark R in Alexandria, VA. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.
CW & Voice Analysis
Morse Code
-.- .-. ....- -- - -.-
CW Weight: 35 units(Moderate)
Voice Phonetics
Kilo Romeo Four Mike Tango Kilo
Readability: 7.5/10(High readability)
License History
- License ModifiedJun 22, 2026
- Administrative Update AppliedJun 11, 2026
- System-Generated GrantJun 10, 2026
- License IssuedJun 10, 2026
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications on record. Verify on the FCC ULS application search before filing.