JH4RSX — FT8 station from Japan

Japan Grid: ?

Amateur radio station JH4RSX operating from Japan. 28 FT8 spots received at SO8OO WebSDR, active on 80m, 20m, 10m, over 9 days, best SNR +15 dB. Heard between 2026-05-01 and 2026-07-16.

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

Overview

Total spots

CQ calls

Days active

-6 dB

Avg SNR

Bands

80m 20m 10m

First seen: 2026-05-01
Last seen: 2026-07-16 11:08 UTC

Frequent QSO partners observed at SO8OO

Stations JH4RSX worked most often, as logged from our receiver:

D2UY · Angola UA4WEL · European Russia VK6ABC · Australia DG1KDD · Fed. Rep. of Germany RC6OU · European Russia 9J2FI · Zambia TN8GD · Republic of the Congo ON6AA · Belgium

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

Time	Band	JH4RSX	Partner	Partner SNR	Msgs
07-10 17:33	20m	+11 / -	RC6OU	- / -18	4	✓ Confirmed
07-10 17:26	20m	-8 / -	UA4WEL	- / -15	3	✓ Confirmed
07-07 20:24	20m	-5 / -	ON6AA	- / -	3	✓ Confirmed
07-02 16:27	20m	-11 / -	DG1KDD	- / -21	3	✓ Confirmed
06-13 13:33	10m	-9 / -	D2UY	- / -23	5	✓ Confirmed
05-29 19:52	20m	-6 / -	TN8GD	- / -19	2	✓ Confirmed
05-26 11:04	10m	-4 / -	9J2FI	- / -9	2	✓ Confirmed

Station Log

20m

UTC    dB  Freq  Message
162730  -6 1162  JH4RSX DG1KDD -21 (x2)
162930 -19 1728  JH4RSX F1SNB JN33
202345 -16  257  JH4RSX 4X1UF -04
202415 -11 1479  JH4RSX ON6AA JO11 (x3)
172615  -7  808  JH4RSX UA4WEL LO66 (x3)
173300 +14 2930  JH4RSX RC6OU KN98 (x4)
130830 -13 1773  JH4RSX <...> -14

80m

UTC    dB  Freq  Message
181230 -22 1151  JH4RSX VK6ABC RR73

10m

UTC    dB  Freq  Message
110415  -2 2833  JH4RSX 9J2FI -09 (x2)
133300 -13 1935  JH4RSX D2UY -23 (x5)