KR4ISA
Active2x3District 4
No competing applications on record.
License HolderSchifferle, John R
License ClassTechnician
Min. Class RequiredTechnician
LocationClover, SC
Grant DateJan 6, 2026
Expiration DateJan 6, 2036
KR4ISA is a 2x3 format amateur radio callsign. It is currently registered to Schifferle, John R in Clover, SC. 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: 28 units(Light (fast to send))
Voice Phonetics
Kilo Romeo Four India Sierra Alpha
Readability: 6/10(Good readability)
License History
- System-Generated GrantJan 6, 2026
- License IssuedJan 6, 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.