KR4IQO
Active2x3District 4
No competing applications on record.
License HolderMarkopoulos, John
License ClassTechnician
Min. Class RequiredTechnician
LocationJonesborough, TN
Grant DateJan 1, 2026
Expiration DateJan 1, 2036
KR4IQO is a 2x3 format amateur radio callsign. It is currently registered to Markopoulos, John in Jonesborough, 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: 40 units(Moderate)
Voice Phonetics
Kilo Romeo Four India Quebec Oscar
Readability: 6.5/10(Good readability)
License History
- System-Generated GrantJan 1, 2026
- License IssuedJan 1, 2026
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.