K3SWH
Active1x3District 3
Competitive callsign — 2 applications filed with the FCC.
License HolderKarp, Robert W
License ClassTechnician
Min. Class RequiredGeneral
LocationChandler, AZ
Grant DateMar 13, 2018
Expiration DateMar 13, 2028
K3SWH is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Karp, Robert W in Chandler, AZ. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Hunt, Stephen W on Jun 8, 2026. K3SWH has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ...-- ... .-- ....
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Three Sierra Whiskey Hotel
Readability: 7.5/10(High readability)
License History
- License ModifiedApr 4, 2018
- License IssuedMar 13, 2018
- Vanity Callsign GrantedMar 13, 2018
- License ExpiredOct 28, 2014
- License ModifiedJun 23, 2004
- Tax ID (TIN) AddedJul 31, 2002
- License RenewedJul 31, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.