KO4JZU
Active2x3District 4
No competing applications on record.
License HolderSHAFFER, JOSEPH S
License ClassTechnician
Min. Class RequiredTechnician
LocationClarksville, TN
Grant DateDec 8, 2020
Expiration DateDec 8, 2030
KO4JZU is a 2x3 format amateur radio callsign. It is currently registered to SHAFFER, JOSEPH S in Clarksville, TN. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.
CW & Voice Analysis
Morse Code
-.- --- ....- .--- --.. ..-
CW Weight: 46 units(Heavy (slower to send))
Voice Phonetics
Kilo Oscar Four Juliet Zulu Uniform
Readability: 6.5/10(Good readability)
License History
- Administrative Update AppliedFeb 25, 2025
- Administrative Update AppliedJan 12, 2021
- System-Generated GrantDec 8, 2020
- License IssuedDec 8, 2020
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications on record. Verify on the FCC ULS application search before filing.