AD4KO
Available2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderKILLOUGH, MARTY N
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationINDIAN TRAIL, NC
Grant DateJun 24, 2003
Expiration DateSep 21, 2013
Cancellation DateSep 22, 2015
Available for ApplicationsSep 22, 2015
AD4KO is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by KILLOUGH, MARTY N in INDIAN TRAIL, NC. 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 Silvers, Steven W on Jun 16, 2026. AD4KO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.- -.. ....- -.- ---
CW Weight: 32 units(Moderate)
Voice Phonetics
Alpha Delta Four Kilo Oscar
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 ExpiredSep 22, 2015
- Tax ID (TIN) AddedJun 24, 2003
- License RenewedJun 24, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Silvers, Steven WFiled Jun 16, 2026Not awardedFCC ↗