K1EIO
Active1x3District 1
Competitive callsign — 1 application filed with the FCC.
License HolderMcDonald, WILLIAM S
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationSagamore Beach, MA
Grant DateFeb 3, 2026
Expiration DateFeb 3, 2036
K1EIO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by McDonald, WILLIAM S in Sagamore Beach, 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 McDonald, WILLIAM S on Jan 16, 2026. K1EIO has 2 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .---- . .. ---
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo One Echo India Oscar
Readability: 7.5/10(High readability)
License History
- License IssuedFeb 3, 2026
- Vanity Callsign GrantedFeb 3, 2026
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- McDonald, WILLIAM SFiled Jan 16, 2026Not awardedFCC ↗