JH4SLF — FT8 station from Japan
Amateur radio station JH4SLF operating from Japan. 23 FT8 spots received at SO8OO WebSDR, active on 40m, 20m, over 6 days, best SNR +27 dB. Heard between 2026-04-21 and 2026-05-23.
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Overview
23
Total spots
0
CQ calls
6
Days active
+5 dB
Avg SNR
Bands
20m
40m
First seen: 2026-04-21
Last seen: 2026-05-23 18:18 UTC
Last seen: 2026-05-23 18:18 UTC
Frequent QSO partners observed at SO8OO
Stations JH4SLF worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JH4SLF | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 05-23 20:17 | 20m | +4 / - | OH7BDI | - / -16 | 4 | Partial |
| 05-23 20:16 | 20m | +26 / - | IK1RQX | - / - | 3 | Partial |
| 05-14 20:51 | 20m | -10 / - | TN8GD | - / -16 | 2 | ✓ Confirmed |
| 05-14 20:34 | 20m | -4 / - | 4L3YL | - / - | 2 | Partial |
| 04-29 23:07 | 20m | 0 / -15 | TL8GD | -6 / -15 | 4 | ✓ Complete |
| 04-27 20:38 | 20m | +22 / - | IT9KHP | - / -19 | 2 | ✓ Confirmed |
| 04-24 20:28 | 40m | +4 / - | IZ4OUL | - / -19 | 2 | ✓ Confirmed |
| 04-21 20:16 | 40m | 0 / - | UX5UW | - / -19 | 4 | ✓ Confirmed |
Station Log
20m
UTC dB Freq Message 230730 +0 575 JH4SLF TL8GD -15 230745 -7 2712 TL8GD JH4SLF R-15 230800 -1 575 JH4SLF TL8GD RR73 230815 -4 2713 TL8GD JH4SLF 73 203400 -7 2920 JH4SLF 4L3YL LN21 (x2) 205130 -8 2333 JH4SLF TN8GD -16 (x2) 201630 +25 2608 JH4SLF IK1RQX JN44 201700 -1 3071 JH4SLF OH7BDI R-16 201700 +27 2608 JH4SLF IK1RQX JN44 201730 +5 3070 JH4SLF OH7BDI R-16 201730 +26 2608 JH4SLF IK1RQX JN44 201800 +11 3069 JH4SLF OH7BDI R-16 (x2)
40m
UTC dB Freq Message 201645 +3 2683 JH4SLF UX5UW KO50 (x4) 202145 +12 2557 JH4SLF IQ4JO JN63 202245 -13 451 JH4SLF SQ8V KO01 202830 +3 1845 JH4SLF IZ4OUL -19 (x2)