JA3MHV — FT8 station from Japan
Amateur radio station JA3MHV operating from Japan. 54 FT8 spots received at SO8OO WebSDR, active on 80m, 40m, 20m, 10m, over 11 days, best SNR +11 dB. Heard between 2026-04-26 and 2026-07-18.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
54
Total spots
0
CQ calls
11
Days active
-5 dB
Avg SNR
Bands
80m
20m
40m
10m
First seen: 2026-04-26
Last seen: 2026-07-18 12:59 UTC
Last seen: 2026-07-18 12:59 UTC
Frequent QSO partners observed at SO8OO
Stations JA3MHV worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JA3MHV | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 07-14 15:49 | 20m | -24 / - | R7DX | - / - | 2 | Partial |
| 07-14 15:49 | 20m | -9 / - | UA9SAV | - / - | 2 | ✓ Confirmed |
| 07-14 15:39 | 20m | - / -15 | TA3ZGR | -9 / - | 2 | Partial |
| 07-14 15:36 | 20m | -20 / - | R6AO | - / - | 2 | Partial |
| 06-19 23:22 | 20m | - / - | CU6AD | -5 / - | 3 | Partial |
| 06-19 23:16 | 20m | - / -12 | TF8KW | -8 / - | 3 | ✓ Confirmed |
| 06-19 23:03 | 20m | - / -10 | IU5HIU | 0 / - | 3 | ✓ Confirmed |
| 06-19 23:02 | 20m | - / -16 | RA4FUT | -7 / - | 2 | ✓ Confirmed |
| 06-19 23:02 | 20m | +6 / - | F5PBG | - / - | 4 | Partial |
| 06-19 22:57 | 20m | - / -11 | SV1MOZ | -2 / - | 8 | ✓ Confirmed |
| 06-19 22:55 | 20m | - / -13 | A92AE | -1 / - | 3 | ✓ Confirmed |
| 06-19 22:53 | 20m | - / -7 | BA6IM | 0 / - | 2 | ✓ Confirmed |
| 06-19 22:53 | 20m | -11 / +4 | BG3NQT | +3 / +1 | 2 | Partial |
| 06-19 22:52 | 20m | - / - | BG4OOO | -1 / - | 2 | ✓ Confirmed |
| 06-19 22:45 | 20m | - / -24 | TJ1GD/P | +2 / - | 12 | ✓ Confirmed |
| 06-19 22:21 | 20m | - / - | D4OL | +7 / - | 6 | Partial |
| 06-19 22:17 | 20m | -9 / - | DF7EF | - / - | 5 | Partial |
| 06-10 13:16 | 10m | -2 / - | 7Q5MP | - / -7 | 2 | ✓ Confirmed |
| 06-09 14:34 | 20m | - / - | 3B8WW | -10 / - | 2 | Partial |
| 06-09 14:24 | 20m | - / - | 3B8WW | -6 / - | 11 | Partial |
| 06-06 22:15 | 20m | -1 / -10 | EA5KV | -9 / -14 | 4 | ✓ Complete |
| 06-06 22:14 | 20m | - / -11 | BA8BLK | -10 / - | 2 | ✓ Confirmed |
| 06-06 22:13 | 20m | - / -12 | BA8BLJ | -9 / - | 2 | ✓ Confirmed |
| 06-06 22:12 | 20m | - / -18 | BG5BNW | -8 / - | 2 | ✓ Confirmed |
| 06-06 22:11 | 20m | - / -3 | BD7KWU | -4 / - | 2 | ✓ Confirmed |
| 06-06 21:47 | 20m | +8 / -15 | 9X5KM | -3 / -10 | 43 | ✓ Complete |
| 06-04 15:59 | 10m | +4 / - | 7Q3CM | - / -16 | 2 | Partial |
| 05-23 16:30 | 20m | -8 / - | CT1FIU | - / - | 2 | Partial |
| 05-23 16:26 | 20m | +6 / +1 | RA3AHN | +1 / - | 4 | ✓ Verified |
| 05-23 16:26 | 20m | +5 / -10 | SN1A | +3 / -1 | 2 | Partial |
| 05-23 16:26 | 20m | -5 / -7 | UA3FO | +5 / -5 | 7 | ✓ Complete |
| 05-23 16:24 | 20m | +2 / -14 | SV5BYP | 0 / -2 | 4 | ✓ Complete |
| 05-23 16:11 | 20m | -12 / -16 | PD0DDA | +1 / - | 4 | ✓ Verified |
| 05-23 16:10 | 20m | - / -22 | TA1EVR | +4 / - | 2 | ✓ Confirmed |
| 05-16 14:57 | 20m | - / -13 | F5RRS | -12 / - | 2 | ✓ Confirmed |
| 05-15 16:49 | 80m | -18 / - | UT7IF | - / -12 | 3 | ✓ Confirmed |
| 05-01 22:16 | 20m | +4 / - | JY5IB | - / -7 | 2 | ✓ Confirmed |
Station Log
10m
UTC dB Freq Message 155900 +5 2803 JA3MHV 7Q3CM R-16 (x2) 075600 -13 1437 JA3MHV TA1NGE RR73 131600 +0 2173 JA3MHV 7Q5MP -07 (x3) 145945 +11 814 JA3MHV SV7BAY -12
20m
UTC dB Freq Message 232245 -5 334 CU6AD JA3MHV PM85 (x2) 153430 -7 406 EU1CZ JA3MHV RR73 153615 -19 1529 JA3MHV R6AO KN95 153630 -8 406 RM1F JA3MHV RR73 153645 -22 1529 JA3MHV R6AO KN95 153900 -8 406 TA3ZGR JA3MHV R-15 (x2) 154130 -12 407 R3EDI JA3MHV -01 154345 -23 1674 JA3MHV R3EDI 73 154630 -8 407 I4HRH JA3MHV RR73 154915 -9 2725 JA3MHV UA9SAV R+00 154945 -24 1915 JA3MHV R7DX KN84 154945 -9 2726 JA3MHV UA9SAV 73 155045 -23 1915 JA3MHV R7DX KN84
40m
UTC dB Freq Message 220600 -8 1491 JA3MHV DJ2WM -18
80m
UTC dB Freq Message 164900 -17 2015 JA3MHV UT7IF R-12 (x3)