JH4SLF — FT8 station from Japan

Japan Grid: KN47

Amateur radio station JH4SLF operating from Japan (grid square KN47). 87 FT8 spots received at SO8OO WebSDR, 2 CQ calls, active on 60m, 40m, 20m, over 19 days, best SNR +27 dB. Heard between 2026-04-24 and 2026-07-22.

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Overview

87
Total spots
2
CQ calls
19
Days active
-1 dB
Avg SNR

Bands

20m 60m 40m
First seen: 2026-04-24
Last seen: 2026-07-22 19:16 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

TimeBandJH4SLFPartnerPartner SNRMsgs
07-22 21:15 60m +4 / - ER3ZW - / - 2 Partial
07-22 21:08 20m +2 / - EA5RR - / -15 5 ✓ Confirmed
07-15 19:53 40m -2 / - RW3ZC - / -15 2 Partial
07-15 19:07 40m +2 / - EU4U - / -18 3 ✓ Confirmed
07-12 19:31 40m -7 / - HB9EFK - / -14 3 ✓ Confirmed
07-11 19:39 40m +7 / - OE3PBS - / -16 2 ✓ Confirmed
07-10 19:41 20m +6 / - US5HL - / -15 2 Partial
07-10 19:37 20m +2 / - EA8UP - / -17 2 Partial
07-07 20:22 20m -12 / - IK5AUL - / -12 2 ✓ Confirmed
06-30 19:57 20m +8 / - RA3RDN - / -24 3 ✓ Confirmed
06-30 19:56 20m +4 / - DL1R - / -13 3 ✓ Confirmed
06-30 19:45 60m +2 / - OE6JCG - / - 2 Partial
06-26 20:09 40m -4 / - SV2HTW - / -18 2 ✓ Confirmed
06-24 20:04 20m -4 / - 4O4DB - / -13 3 ✓ Confirmed
06-24 18:41 20m -6 / - CT3MD - / -20 2 Partial
06-23 19:53 20m -8 / - RA4AAT - / - 2 Partial
06-23 19:17 20m +2 / - UA3GU - / -13 2 ✓ Confirmed
06-23 19:03 20m -12 / - 5Z4VJ - / -12 3 ✓ Confirmed
06-19 14:36 20m -12 / - BG2EFX - / - 2 Partial
06-18 20:26 20m -8 / - UW8SM - / - 2 ✓ Confirmed
06-18 20:25 20m -10 / - DF7EF - / -13 2 ✓ Confirmed
06-18 20:22 20m +2 / - LZ4VR - / -12 5 ✓ Confirmed
06-18 20:15 20m +6 / - LZ4VR - / - 2 Partial
06-18 20:09 20m -14 / -5 UW8SM -6 / - 4 Partial
06-18 20:07 20m - / - A92AE -10 / - 2 Partial
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

Station Log

60m 
UTC    dB  Freq  Message
194530  +1 1733  JH4SLF OE6JCG JN76 (x2)
211530  +4 2043  JH4SLF ER3ZW KN47 (x2)
20m 
UTC    dB  Freq  Message
195800  +5 2848  JH4SLF RA3RDN 73
202230 -13 1500  JH4SLF IK5AUL R-12 (x2)
193730  +2 1764  JH4SLF EA8UP -17 (x2)
194100  +6 2933  JH4SLF US5HL -15 (x2)
144045 -14 2456  JH4SLF GM4FDM -18
191300  -5 1324  JH4SLF EA6UE -25
192800  +7 1777  JH4SLF CN2DX -23
210830  -2 2015  JH4SLF EA5RR -15 (x5)
40m 
UTC    dB  Freq  Message
200945  -5  663  JH4SLF SV2HTW -18 (x2)
193945  +8 1932  JH4SLF OE3PBS -16 (x2)
193145  -4 2430  JH4SLF HB9EFK -14 (x3)
193945 -13 2171  JH4SLF Z31CZ -14
190715  +2 2788  JH4SLF EU4U -18 (x3)
191545 -17 2194  JH4SLF R1QBQ -14
195330  -3 2925  JH4SLF RW3ZC -15 (x2)

SNR History by Band