JH4ADV — FT8 station from Japan
Amateur radio station JH4ADV operating from Japan (grid square KN34). 103 FT8 spots received at SO8OO WebSDR, active on 160m, 80m, 40m, 20m, over 27 days, best SNR +17 dB. Heard between 2026-04-21 and 2026-07-14.
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Overview
103
Total spots
0
CQ calls
27
Days active
-5 dB
Avg SNR
Bands
80m
40m
20m
160m
First seen: 2026-04-21
Last seen: 2026-07-14 18:18 UTC
Last seen: 2026-07-14 18:18 UTC
Frequent QSO partners observed at SO8OO
Stations JH4ADV worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JH4ADV | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 07-10 22:26 | 20m | -12 / - | DB5BC | - / -16 | 2 | Partial |
| 07-09 20:17 | 40m | -10 / - | 9A3TGT | - / - | 2 | ✓ Confirmed |
| 07-09 20:12 | 40m | -11 / - | 9A3TGT | - / -16 | 4 | Partial |
| 07-07 20:29 | 80m | +16 / - | SP3IOE | - / - | 2 | Partial |
| 07-07 20:10 | 40m | -4 / - | UT6HN | - / -9 | 2 | ✓ Confirmed |
| 06-24 20:30 | 40m | -3 / - | OK1FAN | - / - | 2 | Partial |
| 06-24 20:28 | 40m | -14 / - | IQ0OS | - / -12 | 2 | ✓ Confirmed |
| 06-17 22:42 | 20m | -9 / - | CT1FIU | - / - | 3 | Partial |
| 06-17 22:42 | 20m | -8 / - | PR7AD | - / -24 | 4 | ✓ Confirmed |
| 06-17 22:41 | 20m | - / -13 | <...> | -10 / - | 2 | Partial |
| 06-17 22:38 | 20m | 0 / -16 | TJ1GD/P | -11 / -7 | 4 | ✓ Complete |
| 06-17 22:37 | 20m | +4 / - | UN7LEW | - / -12 | 2 | Partial |
| 06-17 20:25 | 20m | - / -12 | OK1ZJK | +14 / - | 3 | ✓ Confirmed |
| 06-17 20:23 | 20m | - / -11 | ON5VN | +13 / - | 4 | ✓ Confirmed |
| 06-15 20:04 | 80m | +3 / - | DL5BWG | - / - | 6 | Partial |
| 06-15 20:03 | 80m | -12 / - | OH1CIN | - / - | 3 | Partial |
| 06-04 20:23 | 40m | +12 / - | S59A | - / -18 | 2 | ✓ Confirmed |
| 06-02 20:19 | 20m | - / -12 | TL8BNW | +8 / - | 7 | ✓ Confirmed |
| 06-02 20:18 | 20m | -5 / -1 | E77FN | +8 / -8 | 5 | ✓ Complete |
| 06-02 20:17 | 20m | - / -15 | SP7MJX | +8 / - | 2 | ✓ Confirmed |
| 06-02 20:16 | 20m | - / -17 | YT2YZ | +8 / - | 2 | ✓ Confirmed |
| 06-02 20:13 | 20m | -18 / - | BG2EFX | +8 / - | 7 | ✓ Complete |
| 06-02 20:13 | 20m | - / -16 | EP2AES | +9 / - | 3 | ✓ Confirmed |
| 05-31 20:32 | 40m | -16 / - | 4Z5PE | - / -3 | 2 | ✓ Confirmed |
| 05-28 20:27 | 40m | -8 / - | UN0GY | - / -4 | 2 | ✓ Confirmed |
| 05-28 20:20 | 40m | +8 / - | DJ7YP | -14 / -12 | 3 | ✓ Verified |
| 05-27 22:28 | 20m | - / -14 | UN8DSW | -5 / - | 3 | ✓ Confirmed |
| 05-27 22:24 | 20m | -16 / -19 | 4X1VL | +3 / -9 | 2 | Partial |
| 05-27 22:22 | 20m | - / -13 | IT9IJF | +2 / - | 3 | ✓ Confirmed |
| 05-27 22:04 | 20m | -4 / -7 | A92AE | +6 / -11 | 4 | ✓ Complete |
| 05-27 21:58 | 20m | - / -10 | VR2VAZ | +10 / - | 2 | ✓ Confirmed |
| 05-27 21:58 | 20m | -3 / - | EA3/N3CZ | - / - | 2 | Partial |
| 05-27 21:58 | 20m | -4 / - | EC3A | - / -12 | 2 | Partial |
| 05-27 21:56 | 20m | -10 / -13 | SV5BYP | +10 / -9 | 6 | ✓ Complete |
| 05-27 21:42 | 20m | - / -17 | BD7PWV | +6 / - | 5 | ✓ Confirmed |
| 05-27 21:40 | 20m | - / -8 | TT1GD | +7 / - | 3 | ✓ Confirmed |
| 05-26 21:33 | 20m | - / -21 | DL7MDX | -5 / - | 4 | ✓ Confirmed |
| 05-18 20:26 | 40m | +16 / - | DD2ML | - / -16 | 2 | ✓ Confirmed |
| 05-13 20:26 | 40m | -4 / - | EW8AAC | - / -14 | 3 | Partial |
| 05-07 20:13 | 40m | 0 / - | DL6ZXG | - / -10 | 2 | ✓ Confirmed |
| 04-30 20:33 | 40m | +6 / - | UB6OFG | - / - | 3 | Partial |
| 04-30 20:31 | 40m | - / -9 | EW8AAC | +1 / - | 2 | Partial |
| 04-30 20:29 | 40m | -8 / -7 | OE1SGU | -9 / -2 | 5 | ✓ Complete |
| 04-30 20:25 | 40m | -3 / -12 | OK4KOP | -3 / - | 5 | ✓ Verified |
| 04-30 20:23 | 40m | +6 / -5 | SV8DCY | -4 / -2 | 5 | ✓ Complete |
| 04-29 20:16 | 80m | -24 / - | VK5PO | -24 / -3 | 2 | ✓ Verified |
Station Log
40m
UTC dB Freq Message 202915 -13 876 JH4ADV IQ0OS RR73 203015 -3 338 JH4ADV OK1FAN JN79 (x2) 203145 -7 399 JH4ADV OE5FSL JN68 203230 -15 1194 JH4ADV 9A1BTU -10 201030 -3 2158 JH4ADV UT6HN R-09 (x2) 202045 -11 651 JH4ADV CR7BRV RR73 201200 -13 1594 JH4ADV 9A3TGT -16 (x6) 201815 -3 1035 JH4ADV YO9BGU KN34
20m
UTC dB Freq Message 223845 -11 899 TJ1GD/P JH4ADV PM64 223900 -1 708 JH4ADV TJ1GD/P -07 223915 -11 899 TJ1GD/P JH4ADV R-16 223930 +0 707 JH4ADV TJ1GD/P RR73 224100 -11 899 <...> JH4ADV PM64 (x2) 224215 -12 898 JH4ADV PR7AD HI22 224245 -8 1639 JH4ADV CT1FIU IN50 224245 -5 898 JH4ADV PR7AD HI22 (x2) 224315 -9 1639 JH4ADV CT1FIU IN50 (x2) 224345 -9 898 JH4ADV PR7AD 73 222615 -12 639 JH4ADV DB5BC JO30 (x2)
80m
UTC dB Freq Message 201430 +10 561 JH4ADV II9MESC -16 201600 -8 746 JH4ADV 9X5KM -16 200345 -11 799 JH4ADV OH1CIN KP10 (x2) 200415 +2 313 JH4ADV DL5BWG JO72 200445 -14 800 JH4ADV OH1CIN KP10 200445 +5 313 JH4ADV DL5BWG JO72 (x5) 201330 -4 683 JH4ADV RA6YDX LN04 201400 -17 1080 JH4ADV R5BS KO85 202945 +16 2609 JH4ADV SP3IOE JO72 (x2)