K4ST
Active1x2District 4
Competitive callsign — 10 applications filed with the FCC.
License HolderENDO, KIYOSHI
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationSan Jacinto, CA
Grant DateFeb 15, 2019
Expiration DateApr 9, 2029
K4ST is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by ENDO, KIYOSHI in San Jacinto, CA. This callsign has attracted significant interest in the amateur radio community, with 10 vanity applications filed with the FCC. The most recent was submitted by Mapa, Vincent B on Apr 1, 2024. K4ST has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- ... -
CW Weight: 20 units(Ultra-light (very fast to send))
Voice Phonetics
Kilo Four Sierra Tango
Readability: 8/10(High readability)
License History
- Administrative Update AppliedJul 26, 2025
- License RenewedFeb 15, 2019
- Administrative Update AppliedMay 4, 2018
- Administrative Update AppliedNov 24, 2014
- Administrative Update AppliedJun 11, 2009
- License RenewedJan 14, 2009
- Administrative Update AppliedJul 2, 2003
- Administrative Update AppliedMar 27, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.