JH7DDH — FT8 station from Japan

Japan Grid: KM69

Amateur radio station JH7DDH operating from Japan (grid square KM69). 21 FT8 spots received at SO8OO WebSDR, active on 40m, 20m, over 5 days, best SNR +9 dB. Heard between 2026-04-25 and 2026-06-07.

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

Overview

21
Total spots
0
CQ calls
5
Days active
+1 dB
Avg SNR

Bands

20m 40m
First seen: 2026-04-25
Last seen: 2026-06-07 18:08 UTC

Frequent QSO partners observed at SO8OO

Stations JH7DDH worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJH7DDHPartnerPartner SNRMsgs
06-07 20:00 20m -4 / -8 IK7IMK -11 / -1 2 Partial
06-06 20:17 20m +2 / - ON6AA - / - 2 Partial
06-06 20:17 20m +2 / - IZ3EAW - / -9 2 ✓ Confirmed
04-30 20:17 40m -5 / - RU3KA - / -15 2 ✓ Confirmed
04-30 19:49 40m 0 / - R3KGN - / -18 4 ✓ Confirmed
04-26 20:04 20m +4 / - SV5BYP - / -12 4 ✓ Confirmed
04-25 20:09 20m +3 / - EA1A - / -11 4 ✓ Confirmed

Station Log

20m 
UTC    dB  Freq  Message
200945  +9 1659  JH7DDH EA1A R-11 (x4)
200430  +5 1506  JH7DDH SV5BYP R-12 (x4)
201700  +1 1710  JH7DDH IZ3EAW R-09 (x2)
201730  +6 2512  JH7DDH ON6AA JO11 (x2)
200015 -11 1253  IK7IMK JH7DDH -08
200130  -4 1816  JH7DDH IK7IMK R-01
200830  -9 1253  JH7DDH TA2EE KM69
40m 
UTC    dB  Freq  Message
193945  +5 1470  JH7DDH PI4DX R-13
194945  +1 1520  JH7DDH R3KGN R-18 (x4)
201700  -7 1218  JH7DDH RU3KA -15 (x2)

SNR History by Band