JH5HDA — FT8 station from Japan
Amateur radio station JH5HDA operating from Japan. 271 FT8 spots received at SO8OO WebSDR, active on 40m, 20m, 10m, over 37 days, best SNR +22 dB. Heard between 2026-05-01 and 2026-06-09.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
271
Total spots
0
CQ calls
37
Days active
-2 dB
Avg SNR
Bands
20m
40m
10m
First seen: 2026-05-01
Last seen: 2026-06-09 19:04 UTC
Last seen: 2026-06-09 19:04 UTC
Frequent QSO partners observed at SO8OO
Stations JH5HDA worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JH5HDA | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-09 20:53 | 20m | -2 / - | IQ4FE | - / -25 | 2 | ✓ Confirmed |
| 06-09 20:50 | 20m | +11 / - | IZ0RPS | -16 / -23 | 3 | ✓ Verified |
| 06-08 22:13 | 20m | - / - | IS0BOZ | -24 / - | 2 | Partial |
| 06-08 21:59 | 20m | - / - | EG1PLL | -15 / - | 3 | Partial |
| 06-08 20:25 | 20m | - / - | DK4NB | -14 / - | 3 | Partial |
| 06-08 20:23 | 20m | - / -2 | SQ2RAD | -15 / - | 3 | ✓ Confirmed |
| 06-06 21:14 | 20m | +8 / - | 7Z1BS | -10 / -10 | 4 | ✓ Verified |
| 06-05 21:36 | 20m | - / - | A61SD | -14 / - | 2 | Partial |
| 06-05 21:20 | 20m | -7 / - | SP5DAA | -16 / -18 | 4 | Partial |
| 06-05 21:18 | 20m | - / - | VU3OSA | -9 / - | 3 | Partial |
| 06-05 21:15 | 20m | -2 / - | A92AE | -4 / - | 2 | ✓ Verified |
| 06-05 21:11 | 20m | - / - | YO8RFS | -10 / - | 2 | Partial |
| 06-05 20:54 | 20m | - / - | 9A2RD | -10 / - | 2 | Partial |
| 06-05 20:39 | 20m | - / - | A92AE | -10 / - | 2 | Partial |
| 06-05 20:38 | 20m | - / - | EA5RR | -8 / - | 2 | Partial |
| 06-05 20:36 | 20m | - / -19 | YO8RRP | -9 / - | 2 | ✓ Confirmed |
| 06-05 20:32 | 20m | - / +1 | UA0LQE | -12 / - | 2 | ✓ Confirmed |
| 06-05 20:31 | 20m | - / -8 | TA3MPK | -13 / - | 2 | ✓ Confirmed |
| 06-04 21:12 | 20m | - / - | SQ7FZR | -18 / - | 2 | Partial |
| 06-04 21:06 | 20m | - / - | SQ6BV | -18 / - | 3 | Partial |
| 06-04 21:05 | 20m | - / - | IU8PML | -20 / - | 2 | Partial |
| 06-04 21:03 | 20m | - / -13 | DL1BZ | -16 / - | 4 | ✓ Confirmed |
| 06-04 20:58 | 20m | - / -18 | CT1BFP | -18 / - | 5 | Partial |
| 06-04 20:54 | 20m | - / -17 | UT6HN | -17 / - | 4 | ✓ Confirmed |
| 06-04 20:50 | 20m | -5 / -15 | PA1GLD | -18 / - | 4 | ✓ Verified |
| 06-04 20:44 | 20m | -20 / -8 | 9A3A | -20 / -8 | 5 | Partial |
| 06-04 20:42 | 20m | +17 / - | 4O4DB | - / -21 | 2 | ✓ Confirmed |
| 06-04 20:35 | 20m | - / -18 | YO3WST | -22 / - | 2 | ✓ Confirmed |
| 06-04 20:33 | 20m | -20 / -13 | IZ3OHR | -21 / -20 | 3 | ✓ Complete |
| 06-04 20:30 | 20m | -8 / -14 | IZ2FTR | -20 / - | 4 | Partial |
| 06-04 20:29 | 20m | - / -19 | SP9JQZ | -22 / - | 3 | ✓ Confirmed |
| 06-04 20:27 | 20m | - / - | IQ0VT | -18 / - | 2 | Partial |
| 06-04 20:25 | 20m | - / - | OJ0Z | -23 / - | 2 | Partial |
| 06-04 20:21 | 20m | - / - | PA3DLX/P | -18 / - | 3 | Partial |
| 06-04 20:19 | 20m | -10 / -14 | IQ0OS | -20 / - | 3 | ✓ Verified |
| 06-04 20:18 | 20m | - / - | 9A5AZK | -18 / - | 2 | Partial |
| 06-04 20:14 | 20m | - / -22 | HG5OGI | -16 / - | 6 | Partial |
| 06-04 20:11 | 20m | -3 / -19 | EA1CQ | -14 / -25 | 6 | Partial |
| 06-04 20:11 | 20m | +2 / -14 | EI3GRB | -14 / -12 | 5 | ✓ Complete |
| 06-04 20:10 | 20m | -7 / -20 | IZ0MIT | -14 / - | 3 | ✓ Verified |
| 06-03 22:10 | 20m | +4 / - | EA3EUX | - / -25 | 2 | ✓ Confirmed |
| 06-03 20:52 | 20m | 0 / - | 9A9N | - / -9 | 2 | ✓ Confirmed |
| 06-03 20:49 | 20m | - / -14 | IZ7XNB | -18 / - | 2 | ✓ Confirmed |
| 06-03 20:46 | 20m | - / - | S55A | -19 / - | 3 | Partial |
| 06-03 20:44 | 20m | +4 / -10 | EA5LD | -19 / -15 | 6 | ✓ Complete |
| 06-03 20:42 | 20m | -2 / - | 9A9N | -20 / -7 | 4 | Partial |
| 06-03 20:38 | 20m | - / - | OE6FEF | -20 / - | 3 | Partial |
| 06-03 20:37 | 20m | - / - | EA1ACP | -16 / - | 2 | Partial |
| 06-03 20:35 | 20m | - / - | HA3JB | -20 / - | 2 | Partial |
| 06-03 20:34 | 20m | +6 / - | I3GXC | -17 / -10 | 4 | ✓ Verified |
Station Log
20m
UTC dB Freq Message 220115 -19 1760 IQ0VT JH5HDA PM63 220145 -21 202 EG1PLL JH5HDA PM63 (x2) 221315 -24 220 IS0BOZ JH5HDA PM63 (x2) 132715 -13 1970 JH5HDA <...> -03 132745 -8 2333 JH5HDA BG0AYW RR73 205045 +10 692 JH5HDA IZ0RPS -23 (x2) 205130 -16 217 IZ0RPS JH5HDA 73 205315 -2 1732 JH5HDA IQ4FE -25 (x2) 210200 -5 1611 JH5HDA II9RICT -09 210430 -11 2671 JH5HDA UR5XMM -19 210815 -23 216 DG9XN JH5HDA PM63
40m
UTC dB Freq Message 202430 +3 1799 JH5HDA SX20RCK -19 202800 -6 2610 JH5HDA RK6OQ RR73 195115 +22 2621 JH5HDA DD2ML -12 (x2) 200530 +2 2762 JH5HDA TC19MAY -21 202000 -8 1041 JH5HDA IQ8DL RR73 200200 +10 401 JH5HDA SX1FLY -18 (x2) 200530 -7 1346 JH5HDA EA5KB RR73 201200 -5 1887 JH5HDA US7UK -24 (x2) 201345 +4 2013 JH5HDA YO2MTG -18 202130 -3 962 JH5HDA RM5F -12 (x2) 201300 -2 1785 JH5HDA RT6O RR73
10m
UTC dB Freq Message 062945 -13 906 JH5HDA A61CK -12 064330 -10 826 JH5HDA A61OK -23 (x2) 091415 -1 394 JH5HDA <...> -17 093900 -3 683 JH5HDA 5Z4VJ -12 (x2) 094330 -9 1733 JH5HDA A61FJ -08 (x2) 082845 -18 1834 JH5HDA YB1OFO -09 (x2)