JO4JDU — FT8 station from Japan
Amateur radio station JO4JDU operating from Japan. 32 FT8 spots received at SO8OO WebSDR, active on 20m, 10m, over 7 days, best SNR +9 dB. Heard between 2026-05-01 and 2026-07-18.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
32
Total spots
0
CQ calls
7
Days active
-6 dB
Avg SNR
Bands
20m
10m
First seen: 2026-05-01
Last seen: 2026-07-18 14:16 UTC
Last seen: 2026-07-18 14:16 UTC
Frequent QSO partners observed at SO8OO
Stations JO4JDU worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JO4JDU | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 07-18 16:12 | 20m | -11 / - | 2D0OMN | - / -23 | 5 | Partial |
| 07-18 15:48 | 20m | -9 / - | R7DX | - / - | 3 | Partial |
| 07-18 15:44 | 20m | -10 / - | DK9BF | - / -7 | 6 | ✓ Confirmed |
| 07-18 15:41 | 20m | +1 / - | SP0VIP | - / -5 | 3 | Partial |
| 06-09 14:43 | 20m | +1 / - | 7Z1CB | - / -13 | 3 | ✓ Confirmed |
| 05-31 16:53 | 20m | +1 / -8 | TL8BNW | -7 / -11 | 8 | ✓ Complete |
| 05-31 16:50 | 20m | - / - | TL8BNW | -14 / - | 2 | Partial |
| 05-28 13:43 | 20m | - / - | <...> | -16 / - | 2 | Partial |
| 05-10 22:08 | 20m | - / -18 | XT2AW | -12 / - | 6 | Partial |
| 05-01 14:58 | 20m | +4 / - | R4FDP | - / - | 3 | Partial |
Station Log
20m
UTC dB Freq Message 154600 -8 1729 JO4JDU DK9BF JO42 (x2) 154700 -23 1486 JO4JDU SP9JP JO90 154700 -10 1729 JO4JDU DK9BF R-07 (x3) 154830 -6 1893 JO4JDU R7DX KN84 (x3) 161245 -13 2194 JO4JDU 2D0OMN -23 (x5) 161645 -15 1675 JO4JDU F4MUD -12
10m
UTC dB Freq Message 064730 -10 825 JO4JDU A61OK RR73 070600 -11 2499 JO4JDU RN6MA RR73