K4RSF
Active1x3District 4
Competitive callsign — 10 applications filed with the FCC.
License HolderWirfs, David D
License ClassTechnician
Min. Class RequiredGeneral
LocationHOUSTON, TX
Grant DateJan 28, 2025
Expiration DateJan 28, 2035
K4RSF is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Wirfs, David D in HOUSTON, TX. This callsign has attracted significant interest in the amateur radio community, with 10 vanity applications filed with the FCC. The most recent was submitted by Fedele, Raymond S on Jan 10, 2025. K4RSF has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .-. ... ..-.
CW Weight: 28 units(Light (fast to send))
Voice Phonetics
Kilo Four Romeo Sierra Foxtrot
Readability: 7/10(Good readability)
License History
- License IssuedJan 28, 2025
- Vanity Callsign GrantedJan 28, 2025
- License CanceledApr 2, 2016
- License IssuedMar 15, 2016
- Vanity Callsign GrantedMar 15, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.