K7OSO
Active1x3District 7
Competitive callsign — 1 application filed with the FCC.
License HolderKOTTKE, LARRY D
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationYuma, AZ
Grant DateNov 22, 2016
Expiration DateFeb 12, 2027
K7OSO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by KOTTKE, LARRY D in Yuma, AZ. 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 MANN, DAVID J on May 16, 2025. K7OSO has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --... --- ... ---
CW Weight: 37 units(Moderate)
Voice Phonetics
Kilo Seven Oscar Sierra Oscar
Readability: 7/10(Good readability)
License History
- License RenewedNov 22, 2016
- Administrative Update AppliedDec 27, 2012
- License RenewedDec 16, 2006
- FRN Association Email SentNov 6, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- MANN, DAVID JFiled May 16, 2025Not awardedFCC ↗