K4PP
Active1x2District 4
Competitive callsign — 5 applications filed with the FCC.
License HolderTHORNTON, DOUGLAS R
License ClassAdvanced
Min. Class RequiredAmateur Extra
LocationWATSONVILLE, CA
Grant DateSep 22, 2020
Expiration DateNov 13, 2030
K4PP is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by THORNTON, DOUGLAS R in WATSONVILLE, CA. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Tineo, Jesus E on May 20, 2026. K4PP has 11 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .--. .--.
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Four Papa Papa
Readability: 8.5/10(High readability)
License History
- Administrative Update AppliedAug 9, 2025
- Administrative Update AppliedAug 28, 2021
- License RenewedSep 22, 2020
- Administrative Update AppliedFeb 11, 2020
- Administrative Update AppliedSep 23, 2014
- License IssuedNov 13, 2010
- Vanity Callsign GrantedNov 13, 2010
- Internal Correction AppliedOct 29, 2010
- Internal Correction AppliedOct 29, 2010
- FRN Association Letter SentJan 23, 2010
- FRN Disassociation Letter SentJan 23, 2010
Vanity Application Activity
Competing applications filed with the FCC for this callsign.