JH5HDA — FT8 station from Japan
Amateur radio station JH5HDA operating from Japan. 501 FT8 spots received at SO8OO WebSDR, active on 40m, 20m, 10m, over 73 days, best SNR +22 dB. Heard between 2026-05-01 and 2026-07-24.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
501
Total spots
0
CQ calls
73
Days active
-4 dB
Avg SNR
Bands
20m
40m
10m
First seen: 2026-05-01
Last seen: 2026-07-24 20:17 UTC
Last seen: 2026-07-24 20:17 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 | |
|---|---|---|---|---|---|---|
| 07-24 22:17 | 20m | -10 / - | F4GHN | - / -24 | 2 | Partial |
| 07-24 22:03 | 20m | -7 / - | F4GHN | - / -24 | 3 | Partial |
| 07-24 21:34 | 20m | -16 / - | 9A5MTV | - / -22 | 2 | Partial |
| 07-24 21:04 | 20m | 0 / - | E77TH | - / -13 | 2 | ✓ Confirmed |
| 07-21 13:28 | 20m | -20 / - | R2RAK | - / - | 2 | ✓ Confirmed |
| 07-21 07:01 | 20m | -6 / - | DL3OCF | - / -12 | 2 | Partial |
| 07-20 22:33 | 20m | +8 / - | IV3CLI | - / -17 | 2 | ✓ Confirmed |
| 07-20 20:40 | 40m | +2 / - | SV6JHA | - / -25 | 4 | ✓ Confirmed |
| 07-19 21:36 | 20m | 0 / - | CT1EDA | - / -14 | 2 | ✓ Confirmed |
| 07-19 21:30 | 20m | -14 / - | EC3A | - / -12 | 2 | ✓ Confirmed |
| 07-19 21:20 | 20m | +2 / - | CT1EDA | - / -19 | 2 | Partial |
| 07-19 21:11 | 20m | 0 / - | DL1R | - / -14 | 2 | Partial |
| 07-18 20:48 | 20m | -4 / - | HB0/HB9FXF | - / -12 | 2 | Partial |
| 07-18 20:25 | 20m | +17 / - | OK1KKI | - / -13 | 2 | ✓ Confirmed |
| 07-17 20:15 | 40m | -5 / - | YO8CRU | - / -16 | 2 | ✓ Confirmed |
| 07-16 21:06 | 20m | +4 / - | EG5SJO | - / -17 | 2 | ✓ Confirmed |
| 07-14 20:38 | 20m | +15 / - | G7IRU | - / -21 | 2 | ✓ Confirmed |
| 07-14 20:13 | 20m | -16 / - | IK5EEA | - / -10 | 2 | ✓ Confirmed |
| 07-14 20:11 | 20m | -4 / - | Z61DX | - / -13 | 2 | ✓ Confirmed |
| 07-13 22:06 | 20m | 0 / - | IV3DSG | - / -20 | 2 | ✓ Confirmed |
| 07-11 21:48 | 20m | -10 / - | IK6VXF | - / -18 | 2 | ✓ Confirmed |
| 07-09 19:17 | 40m | -2 / - | SP6CC | - / -23 | 2 | ✓ Confirmed |
| 07-09 19:08 | 40m | 0 / - | E77D | - / -22 | 2 | ✓ Confirmed |
| 07-09 19:07 | 40m | -6 / - | R3PBR | - / -14 | 2 | ✓ Confirmed |
| 07-09 08:12 | 10m | -8 / - | R3OR | - / -17 | 2 | ✓ Confirmed |
| 07-07 22:18 | 20m | -12 / - | CT1EEX | - / -24 | 2 | ✓ Confirmed |
| 07-07 21:17 | 20m | +4 / - | F1SAA | - / -12 | 2 | ✓ Confirmed |
| 07-06 20:23 | 40m | -12 / - | R5BD | - / -19 | 2 | ✓ Confirmed |
| 07-06 20:18 | 40m | -12 / - | 9A1BTU | - / -15 | 3 | ✓ Confirmed |
| 07-05 22:07 | 20m | 0 / - | RA7E | - / -15 | 2 | Partial |
| 07-03 20:10 | 20m | +18 / - | TM8WWA | - / -17 | 3 | Partial |
| 07-02 20:12 | 20m | -10 / - | IU8VAS | - / -14 | 4 | ✓ Confirmed |
| 07-02 20:05 | 20m | -20 / - | R6DBT | - / -11 | 2 | ✓ Confirmed |
| 07-02 19:21 | 40m | -14 / - | RA5CO | - / -25 | 2 | ✓ Confirmed |
| 06-29 20:56 | 20m | -18 / - | SV/AA6PP | - / -21 | 3 | ✓ Confirmed |
| 06-29 20:48 | 20m | -18 / - | <...> | - / -24 | 3 | Partial |
| 06-29 20:47 | 20m | -15 / - | DF3MC | - / - | 5 | Partial |
| 06-28 21:08 | 20m | -14 / - | SM6KTO | - / -25 | 2 | Partial |
| 06-28 21:06 | 20m | +2 / - | IZ5WTV | - / -5 | 2 | ✓ Confirmed |
| 06-28 08:38 | 10m | -10 / - | LZ2CP | - / -6 | 2 | ✓ Confirmed |
| 06-26 20:10 | 40m | +4 / - | SP3PLD | - / -6 | 2 | ✓ Confirmed |
| 06-25 20:49 | 20m | -16 / - | OK1CYC | - / -10 | 2 | ✓ Confirmed |
| 06-25 20:46 | 20m | -8 / - | 4Z5AY | - / -7 | 2 | ✓ Confirmed |
| 06-24 20:18 | 20m | -3 / - | F5IXN | - / - | 3 | Partial |
| 06-24 19:42 | 40m | -9 / - | RC6OD | - / -21 | 4 | ✓ Confirmed |
| 06-21 20:20 | 40m | -15 / - | TA3NK | - / -24 | 2 | Partial |
| 06-19 22:21 | 20m | - / - | E71ELD | -22 / - | 2 | Partial |
| 06-19 21:21 | 20m | +4 / -17 | EA8UP | -17 / -11 | 5 | ✓ Complete |
| 06-19 20:19 | 20m | - / - | OH5KZ | -18 / - | 2 | Partial |
| 06-19 20:16 | 20m | - / - | TA2ED | -16 / - | 2 | Partial |
Station Log
20m
UTC dB Freq Message 070145 -10 1454 JH5HDA DL3OCF JO51 132815 -19 2056 JH5HDA R2RAK RR73 (x2) 201400 -19 2337 JH5HDA 9A3MKK -12 230200 -16 791 JH5HDA RD6OZ 73 210400 -1 481 JH5HDA E77TH -13 (x2) 212745 -18 2083 JH5HDA R3KLE RR73 213430 -13 1406 JH5HDA 9A5MTV -22 (x2) 220345 -7 2391 JH5HDA F4GHN -24 (x5)
40m
UTC dB Freq Message 202330 -13 1495 JH5HDA R5BD -19 (x2) 190700 -8 2079 JH5HDA R3PBR -14 (x2) 190830 -1 758 JH5HDA E77D -22 (x2) 191700 -1 2084 JH5HDA SP6CC -23 (x2) 201545 -3 239 JH5HDA YO8CRU -16 (x2) 201915 -16 2196 JH5HDA R3BDQ RR73 204015 +4 2940 JH5HDA SV6JHA -25 (x4)
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) 083815 -9 1593 JH5HDA LZ2CP R-06 (x2) 081245 -9 1430 JH5HDA R3OR -17 (x2)