K5SEK
Active1x3District 5
Competitive callsign — 1 application filed with the FCC.
License HolderKlemp, Sherwin E
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationHouston, TX
Grant DateAug 19, 2025
Expiration DateNov 13, 2035
K5SEK is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Klemp, Sherwin E in Houston, TX. 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 Klemp, Sherwin E on Oct 26, 2015. K5SEK has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ..... ... . -.-
CW Weight: 23 units(Light (fast to send))
Voice Phonetics
Kilo Five Sierra Echo Kilo
Readability: 7.5/10(High readability)
License History
- License RenewedAug 19, 2025
- License ModifiedSep 26, 2016
- License IssuedNov 13, 2015
- Vanity Callsign GrantedNov 13, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Klemp, Sherwin EFiled Oct 26, 2015Not awardedFCC ↗