JA8CSW — FT8 station from Japan

Japan Grid: LP04

Amateur radio station JA8CSW operating from Japan (grid square LP04). 49 FT8 spots received at SO8OO WebSDR, active on 20m, over 10 days, best SNR +14 dB. Heard between 2026-04-27 and 2026-06-13.

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

Overview

Total spots

CQ calls

Days active

-4 dB

Avg SNR

Bands

20m

First seen: 2026-04-27
Last seen: 2026-06-13 17:00 UTC

Frequent QSO partners observed at SO8OO

Stations JA8CSW worked most often, as logged from our receiver:

R9FDM · European Russia ×2 EX8ABR/P · Kyrgyzstan R9AL · Asiatic Russia A61FJ · United Arab Emirates SV8DCY · Greece 9J2FI · Zambia 4X1UF · Israel LZ1QB · Bulgaria

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

Time	Band	JA8CSW	Partner	Partner SNR	Msgs
06-13 18:56	20m	-1 / -	RZ1OA	- / -	7	Partial
06-03 20:23	20m	+2 / -	SV8DCY	- / -14	2	✓ Confirmed
06-03 19:27	20m	-3 / -	HB9EFK	- / -15	4	Partial
06-02 20:26	20m	0 / -	LZ4VR	- / -	2	Partial
06-02 20:24	20m	-2 / -	9J2FI	- / -7	2	✓ Confirmed
06-02 19:40	20m	-9 / -	LZ1QB	- / -16	5	✓ Confirmed
05-31 19:59	20m	-1 / -	SX20RCK	- / -11	5	Partial
05-30 19:53	20m	+2 / -	4X1UF	- / -8	5	✓ Confirmed
05-26 13:48	20m	-17 / -	R9FDM	- / -	3	✓ Confirmed
05-15 05:35	20m	+7 / -	RZ1OA	- / -	3	Partial
04-27 09:38	20m	-8 / -	R9AL	- / -14	3	✓ Confirmed

Station Log

20m

UTC    dB  Freq  Message
192745  -5 2647  JA8CSW HB9EFK -15 (x3)
201415  -8 1095  JA8CSW LZ4VR KN13
202300  +1 2487  JA8CSW SV8DCY -14 (x2)
181615  +1 2633  JA8CSW UN7EAX MO52
191430 -12 1643  JA8CSW TA1MDS -16
185645  +1  680  JA8CSW RZ1OA LP04 (x7)