JK3UDU — FT8 station from Japan

Japan Grid: ?

Amateur radio station JK3UDU operating from Japan. 12 FT8 spots received at SO8OO WebSDR, active on 20m, 10m, over 8 days, best SNR -6 dB. Heard between 2026-05-05 and 2026-06-12.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee

Overview

Total spots

CQ calls

Days active

-13 dB

Avg SNR

Bands

20m 10m

First seen: 2026-05-05
Last seen: 2026-06-12 23:24 UTC

Frequent QSO partners observed at SO8OO

Stations JK3UDU worked most often, as logged from our receiver:

BG7WJH · China BA4IAW · China B1CRA · China UN8DSW · Kazakhstan BD4XGP · China

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

Time	Band	JK3UDU	Partner	Partner SNR	Msgs
06-13 01:23	20m	-15 / -	UN8DSW	- / -14	3	✓ Confirmed
05-27 08:19	10m	-10 / -	BD4XGP	- / -10	2	✓ Confirmed
05-08 23:39	20m	-7 / -	BG7WJH	- / -9	2	✓ Confirmed

Station Log

20m

UTC    dB  Freq  Message
042145 -18 1483  JK3UDU B1CRA RR73
054245 -16 2095  JK3UDU NA6JD -10
233915  -8  575  JK3UDU BG7WJH -09 (x2)
222845 -11  852  JK3UDU BA4IAW RR73
014000 -11 2376  JK3UDU R9OOF -15
091045 -18  892  JK3UDU TI5RR -14
012330 -15 2313  JK3UDU UN8DSW NO00 (x3)

10m

UTC    dB  Freq  Message
081900 -12 1452  JK3UDU BD4XGP -10 (x2)