K4KRR
Available1x3District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderJACOBS, CHARLES J
License ClassTechnician
Min. Class RequiredGeneral
LocationPalatka, FL
Grant DateMar 5, 2009
Expiration DateMar 5, 2019
Cancellation DateMar 6, 2021
Available for ApplicationsMar 6, 2021
K4KRR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by JACOBS, CHARLES J in Palatka, FL. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Ebrahimi, Ali H on Jul 1, 2026. K4KRR has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -.- .-. .-.
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Four Kilo Romeo Romeo
Readability: 7/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredMar 6, 2021
- License RenewedMar 5, 2009
- FRN Association Email SentMar 4, 2009
Vanity Application Activity
Competing applications filed with the FCC for this callsign.