K4RDP
Active1x3District 4
Competitive callsign — 6 applications filed with the FCC.
License HolderPoulson, Ralph D
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationFERNDALE, WA
Grant DateApr 30, 2024
Expiration DateApr 30, 2034
K4RDP is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Poulson, Ralph D in FERNDALE, WA. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Parker, Robert D on Feb 10, 2026. K4RDP has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .-. -.. .--.
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo Four Romeo Delta Papa
Readability: 7.5/10(High readability)
License History
- License IssuedApr 30, 2024
- Vanity Callsign GrantedApr 30, 2024
- License ExpiredMay 5, 2015
- Administrative Update AppliedMay 29, 2003
- License RenewedApr 30, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.