7K4AIS — FT8 station from Japan
Amateur radio station 7K4AIS operating from Japan (grid square JN70). 82 FT8 spots received at SO8OO WebSDR, 4 CQ calls, active on 40m, 20m, over 6 days, best SNR +14 dB. Heard between 2026-05-05 and 2026-05-30.
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Overview
82
Total spots
4
CQ calls
6
Days active
-6 dB
Avg SNR
Bands
20m
40m
First seen: 2026-05-05
Last seen: 2026-05-30 13:44 UTC
Last seen: 2026-05-30 13:44 UTC
Frequent QSO partners observed at SO8OO
Stations 7K4AIS worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | 7K4AIS | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 05-30 15:40 | 20m | -1 / - | IZ8EDI | - / - | 7 | Partial |
| 05-30 15:34 | 20m | -17 / - | DK7ZT | - / -25 | 2 | Partial |
| 05-30 15:33 | 20m | 0 / - | RA3ZH | - / -16 | 8 | Partial |
| 05-30 15:28 | 20m | - / -10 | R4ADD | -11 / - | 2 | Partial |
| 05-30 15:19 | 20m | - / -11 | OK1VKX | -16 / - | 2 | Partial |
| 05-30 15:18 | 20m | - / -6 | UA6F | -18 / - | 2 | ✓ Confirmed |
| 05-30 15:16 | 20m | - / - | JA3SIA | -13 / - | 2 | ✓ Confirmed |
| 05-30 15:14 | 20m | -7 / - | R3KLA | -16 / - | 3 | ✓ Verified |
| 05-30 15:13 | 20m | - / +1 | BG2ATH | -15 / - | 2 | ✓ Confirmed |
| 05-30 15:12 | 20m | - / -16 | ZL1AB | -18 / - | 2 | ✓ Confirmed |
| 05-30 15:10 | 20m | - / -13 | N7BT | -20 / - | 2 | ✓ Confirmed |
| 05-30 15:08 | 20m | - / -10 | BG5AOZ | -18 / - | 2 | ✓ Confirmed |
| 05-30 15:07 | 20m | -4 / - | R3EDI | - / - | 2 | Partial |
| 05-30 15:07 | 20m | - / -9 | VU2FR | -20 / - | 2 | ✓ Confirmed |
| 05-30 15:02 | 20m | -23 / -1 | A61FJ | -18 / - | 3 | ✓ Verified |
| 05-30 14:53 | 40m | -8 / - | RA6ABC | - / - | 2 | Partial |
| 05-30 14:38 | 40m | -18 / - | R7OP | - / - | 2 | Partial |
| 05-30 14:38 | 40m | -8 / - | RA3ZGT | - / - | 2 | Partial |
| 05-24 10:58 | 20m | +2 / - | K4RUM | - / - | 2 | Partial |
| 05-23 14:01 | 20m | 0 / - | G3VCQ | - / -16 | 2 | ✓ Confirmed |
| 05-10 07:12 | 20m | -12 / - | V31DL | - / -15 | 3 | Partial |
| 05-09 19:07 | 20m | -14 / - | ON3FM | - / -14 | 2 | Partial |
| 05-09 19:02 | 20m | -10 / -13 | IS0LYN | -12 / -21 | 8 | ✓ Complete |
| 05-09 19:00 | 20m | - / -12 | SQ8SBP | -10 / - | 4 | ✓ Confirmed |
| 05-09 18:58 | 20m | - / -14 | SP9JP | -12 / - | 2 | ✓ Confirmed |
| 05-09 18:56 | 20m | -2 / -18 | CT7AUT | -6 / - | 3 | ✓ Verified |
| 05-09 18:56 | 20m | -18 / - | PA3AGN | - / -21 | 2 | Partial |
| 05-09 18:52 | 20m | +1 / - | F1HFP | - / -17 | 5 | ✓ Confirmed |
| 05-09 18:51 | 20m | - / -12 | A92AE | -7 / - | 2 | Partial |
| 05-09 18:00 | 40m | +11 / - | HA7JDU | - / - | 3 | Partial |
| 05-09 17:34 | 40m | -4 / - | OH1EDK | - / -9 | 5 | ✓ Confirmed |
| 05-05 20:21 | 20m | +14 / - | EA8UP | -13 / -19 | 2 | ✓ Verified |
| 05-05 19:16 | 20m | -11 / -14 | A61DD | -14 / -3 | 2 | Partial |
| 05-05 19:13 | 20m | -5 / - | EI3CTB | - / - | 2 | Partial |
| 05-05 19:13 | 20m | +8 / - | OD5ZF | -6 / -9 | 3 | ✓ Verified |
| 05-05 19:12 | 20m | -8 / -5 | TA1CQ | -10 / -15 | 3 | ✓ Complete |
| 05-05 11:47 | 20m | -12 / - | ON8BB | - / - | 2 | Partial |
Station Log
20m
UTC dB Freq Message 153445 +8 337 7K4AIS RA3ZH KO81 (x4) 153715 -12 1203 CQ 7K4AIS PM95 153730 -11 1257 7K4AIS RA3ZH KO81 153745 -17 1203 DL2RPN 7K4AIS -18 153945 -15 1203 BV2LD 7K4AIS -12 154045 +2 2076 7K4AIS IZ8EDI JN70 (x7)
40m
UTC dB Freq Message 173430 -4 2919 7K4AIS OH1EDK KP01 (x5) 180030 +10 2069 7K4AIS HA7JDU JN87 (x3) 143800 -18 1288 7K4AIS R7OP KN98 143800 -9 646 7K4AIS RA3ZGT KO81 143830 -19 1288 7K4AIS R7OP KN98 143830 -7 646 7K4AIS RA3ZGT KO81 145330 -7 1570 7K4AIS RA6ABC KN96 (x2)