JA4HDO — FT8 station from Japan

Japan Grid: KN97

Amateur radio station JA4HDO operating from Japan (grid square KN97). 22 FT8 spots received at SO8OO WebSDR, active on 80m, 40m, 20m, over 5 days, best SNR +8 dB. Heard between 2026-04-23 and 2026-07-15.

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

Overview

22
Total spots
0
CQ calls
5
Days active
-2 dB
Avg SNR

Bands

80m 40m 20m
First seen: 2026-04-23
Last seen: 2026-07-15 18:24 UTC

Frequent QSO partners observed at SO8OO

Stations JA4HDO worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJA4HDOPartnerPartner SNRMsgs
06-06 20:46 20m - / - S55A 0 / - 5 Partial
06-06 20:45 20m - / - A61SD -2 / - 2 Partial
06-06 20:39 20m -6 / -6 OE9GWV 0 / -4 5 ✓ Complete
06-06 20:38 20m +2 / - IK1LZF - / - 3 Partial
06-06 20:35 20m - / - JY5CG +1 / - 5 Partial
06-06 20:32 20m +3 / -11 SV9QWC +1 / +1 7 ✓ Complete
06-06 20:03 40m +6 / - Z62NS - / - 2 ✓ Confirmed
04-30 20:12 80m -3 / - TA9J - / -12 2 ✓ Confirmed

Station Log

40m 
UTC    dB  Freq  Message
200330  +7  756  JA4HDO Z62NS +16 (x2)
201100 -10 2233  JA4HDO YO9PH -14
201930  -1  939  JA4HDO OL900JAR -08
202400 -17 1842  JA4HDO R6LPF KN97
20m 
UTC    dB  Freq  Message
203900  +4 2994  JA4HDO IK1LZF JN44
203930 -11  920  JA4HDO OE9GWV JN47
203930  +1 2994  JA4HDO IK1LZF JN44
204000  -5  920  JA4HDO OE9GWV JN47
204015  +1  270  OE9GWV JA4HDO -06
204030  -2  920  JA4HDO OE9GWV R-04
204045  +0  270  OE9GWV JA4HDO RR73
204500  -1  270  A61SD JA4HDO PM64 (x2)
204630  +1  270  S55A JA4HDO PM64 (x5)
210730  -8  279  JA4HDO IW9HPG 73
80m 
UTC    dB  Freq  Message
201215  +0 1410  JA4HDO TA9J -12 (x2)

SNR History by Band