KS4RRF
Active2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderPalko, Leonard E
License ClassTechnician
Min. Class RequiredTechnician
LocationKingston, TN
Grant DateDec 30, 2025
Expiration DateJan 1, 2036
KS4RRF is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Palko, Leonard E in Kingston, TN. 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 Palko, Leonard E on Dec 14, 2015. KS4RRF has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ... ....- .-. .-. ..-.
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Sierra Four Romeo Romeo Foxtrot
Readability: 6/10(Good readability)
License History
- License RenewedDec 30, 2025
- License IssuedJan 1, 2016
- Vanity Callsign GrantedJan 1, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Palko, Leonard EFiled Dec 14, 2015Not awardedFCC ↗