KF4DEN
Available2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderRUZINSKY, MICHAEL A
License ClassTechnician
Min. Class RequiredTechnician
LocationODENTON, MD
Grant DateJun 10, 2005
Expiration DateSep 8, 2015
Cancellation DateSep 9, 2017
Available for ApplicationsSep 9, 2017
KF4DEN is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by RUZINSKY, MICHAEL A in ODENTON, MD. 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 Slabaugh, Dennis B on Jun 8, 2026. KF4DEN has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ..-. ....- -.. . -.
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Foxtrot Four Delta Echo November
Readability: 7/10(Good readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License ExpiredSep 9, 2017
- Tax ID (TIN) AddedJun 10, 2005
- License RenewedJun 10, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Slabaugh, Dennis BFiled Jun 8, 2026Not awardedFCC ↗