JA4TKY — FT8 station from Japan
Amateur radio station JA4TKY operating from Japan (grid square LN04). 79 FT8 spots received at SO8OO WebSDR, active on 160m, 80m, 40m, 20m, 10m, over 13 days, best SNR +16 dB. Heard between 2026-04-21 and 2026-05-14.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
79
Total spots
0
CQ calls
13
Days active
-3 dB
Avg SNR
Bands
80m
20m
40m
10m
160m
First seen: 2026-04-21
Last seen: 2026-05-14 16:28 UTC
Last seen: 2026-05-14 16:28 UTC
Frequent QSO partners observed at SO8OO
Stations JA4TKY worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JA4TKY | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 05-14 18:21 | 80m | -10 / - | RK3OS | - / - | 2 | Partial |
| 05-14 18:17 | 80m | -11 / - | SV2BWY | - / - | 2 | Partial |
| 05-14 11:58 | 20m | - / -23 | <...> | -6 / - | 2 | Partial |
| 05-14 11:56 | 20m | -11 / - | GW8PSJ | -6 / -21 | 6 | Partial |
| 05-13 13:48 | 20m | - / - | PD0JEW | -12 / - | 2 | Partial |
| 05-13 13:38 | 20m | - / - | OM3CPV | -9 / - | 3 | Partial |
| 05-13 13:33 | 20m | - / -13 | DJ3JD | -13 / - | 2 | ✓ Confirmed |
| 05-11 21:13 | 20m | -13 / - | IZ8VYU | -20 / -9 | 4 | ✓ Verified |
| 05-11 21:12 | 20m | -1 / -20 | GI5KSO | -17 / -10 | 8 | Partial |
| 05-11 21:11 | 20m | - / - | DL6BCZ | -16 / - | 2 | ✓ Confirmed |
| 05-11 21:07 | 20m | - / - | YI3AA | -12 / - | 4 | Partial |
| 05-11 21:05 | 20m | - / - | OK1XD | -10 / - | 2 | Partial |
| 05-07 23:09 | 20m | - / - | A92AE | -10 / - | 3 | Partial |
| 05-07 23:06 | 20m | - / - | A92AE | -5 / - | 2 | Partial |
| 05-07 22:57 | 20m | - / - | 9K2MP | 0 / - | 11 | Partial |
| 05-07 22:04 | 20m | - / - | 9K2MP | -2 / - | 3 | Partial |
| 05-07 21:03 | 20m | +7 / - | EA8AJ | - / -2 | 4 | Partial |
| 05-07 21:01 | 20m | - / -15 | TA1CQ | -10 / - | 2 | Partial |
| 05-07 20:57 | 20m | - / - | LY5J | -12 / - | 2 | ✓ Confirmed |
| 05-07 20:56 | 20m | - / -12 | SQ5JMO | -14 / - | 2 | ✓ Confirmed |
| 05-07 20:51 | 20m | - / -17 | GM3JIM | -11 / - | 7 | Partial |
| 05-07 20:47 | 20m | -19 / -18 | PD0DDA | -9 / - | 3 | ✓ Verified |
| 05-07 20:46 | 20m | - / -14 | IW5CJJ/LDV | -6 / - | 2 | Partial |
| 05-07 20:43 | 20m | - / -18 | LY7T | -10 / - | 3 | ✓ Confirmed |
| 05-07 20:35 | 20m | - / -1 | <...> | -9 / - | 6 | Partial |
| 05-07 20:33 | 20m | - / - | 9A2Z | -6 / - | 3 | Partial |
| 05-07 20:28 | 20m | -4 / -15 | DK3WN | -8 / -2 | 4 | Partial |
| 05-07 20:27 | 20m | - / - | A61OK | -9 / - | 2 | Partial |
| 05-05 20:29 | 80m | -6 / - | 4Z5KU | - / -12 | 2 | ✓ Confirmed |
| 05-02 20:11 | 40m | -4 / - | AU2M | - / +3 | 2 | ✓ Confirmed |
| 05-01 22:41 | 20m | -1 / - | JY5IB | - / -5 | 2 | ✓ Confirmed |
| 04-29 16:30 | 20m | - / -15 | SV2BRT | -8 / - | 2 | Partial |
| 04-29 16:27 | 20m | +11 / - | ON6AA | -8 / -3 | 4 | ✓ Verified |
| 04-29 15:28 | 20m | -4 / - | ON8PB | - / - | 5 | Partial |
| 04-29 15:23 | 20m | +14 / - | ON6AA | - / - | 2 | Partial |
| 04-29 15:21 | 20m | - / - | ZS1WC | -8 / - | 4 | Partial |
| 04-25 19:12 | 160m | +10 / - | YU1LD | - / - | 6 | Partial |
| 04-21 14:06 | 20m | - / -10 | R4FDW | -6 / - | 2 | ✓ Confirmed |
| 04-21 14:03 | 20m | - / -12 | YO8CNA | -4 / - | 4 | ✓ Confirmed |
| 04-21 14:00 | 20m | -15 / - | EA3CSK | - / - | 7 | Partial |
| 04-21 13:57 | 20m | - / - | EW8AAC | -12 / - | 2 | ✓ Confirmed |
| 04-21 13:52 | 20m | - / -22 | EW2CQ | -10 / - | 4 | ✓ Confirmed |
| 04-21 13:49 | 20m | +8 / - | R3KF | -7 / -4 | 3 | ✓ Verified |
| 04-21 13:47 | 20m | - / -17 | SN1LH | -6 / - | 2 | Partial |
| 04-21 13:46 | 20m | -3 / -15 | ON7PS | -8 / -14 | 5 | Partial |
| 04-21 13:44 | 20m | +3 / - | R8HC | -5 / - | 4 | ✓ Verified |
| 04-21 13:38 | 20m | - / -13 | JW5E | -4 / - | 6 | Partial |
Station Log
80m
UTC dB Freq Message 182100 +11 2896 JA4TKY 9A3LN JN95 202900 -6 2189 JA4TKY 4Z5KU -12 (x2) 181700 -13 2066 JA4TKY SV2BWY KN10 181730 -11 2268 JA4TKY IT9KHI -22 181900 -9 2151 JA4TKY SV2BWY KN10 182130 -12 2024 JA4TKY RK3OS KO90 (x2) 182815 -15 2394 JA4TKY RY7F LN04 182945 -20 2234 JA4TKY R5ZJ -15
20m
UTC dB Freq Message 133900 -12 2627 OM3CPV JA4TKY PM75 (x2) 134400 -14 2109 UA3WDO JA4TKY R-14 134830 -12 2109 PD0JEW JA4TKY PM75 (x2) 140945 -14 1578 JA4TKY R9OON NO15 115600 -8 2204 GW8PSJ JA4TKY PM75 (x3) 115815 -4 2101 <...> JA4TKY PM75 115815 -15 772 JA4TKY GW8PSJ -21 115845 -7 2101 <...> JA4TKY R-23 115915 -10 773 JA4TKY GW8PSJ -21 (x2) 120245 -7 2101 EW8CW JA4TKY PM75
40m
UTC dB Freq Message 205315 -24 1394 <...> JA4TKY PM75 201100 -7 356 JA4TKY AU2M +03 (x2) 183330 -10 2276 JA4TKY 9A26WARD -20 183400 -15 1565 JA4TKY UA3FO KO94
10m
UTC dB Freq Message 095945 -21 1333 JA4TKY VU2ADV RR73 125645 +11 2919 JA4TKY VU2CPL RR73 132900 -16 1862 JA4TKY ZS1TFK +03
160m
UTC dB Freq Message 191200 +9 1479 JA4TKY YU1LD KN04 (x6)