KM4RSN
Active2x3District 4
No competing applications on record.
License HolderPlatt Jr, Henry N
License ClassAmateur Extra
Min. Class RequiredTechnician
LocationBryn Mawr, PA
Grant DateJan 21, 2026
Expiration DateMar 1, 2036
KM4RSN is a 2x3 format amateur radio callsign. It is currently registered to Platt Jr, Henry N in Bryn Mawr, PA. 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: 32 units(Moderate)
Voice Phonetics
Kilo Mike Four Romeo Sierra November
Readability: 6.5/10(Good readability)
License History
- License RenewedJan 21, 2026
- System-Generated GrantMar 1, 2016
- License IssuedMar 1, 2016
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.