KM4ADD
Available2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderHENRY, JAMES E
License ClassP
Min. Class RequiredTechnician
LocationSOUTH BOSTON, MA
Grant DateApr 10, 2014
Expiration DateApr 10, 2024
Cancellation DateMay 7, 2026
Available for ApplicationsApr 11, 2026
KM4ADD is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by HENRY, JAMES E in SOUTH BOSTON, MA. 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 Mayfield, Keith on May 26, 2026. KM4ADD has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -- ....- .- -.. -..
CW Weight: 34 units(Moderate)
Voice Phonetics
Kilo Mike Four Alpha Delta Delta
Readability: 8/10(High readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License ExpiredMay 7, 2026
- System-Generated GrantApr 10, 2014
- License IssuedApr 10, 2014
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Mayfield, KeithFiled May 26, 2026Not awardedFCC ↗