JA4DLF — FT8 station from Japan

Japan Grid: ?

Amateur radio station JA4DLF operating from Japan. 386 FT8 spots received at SO8OO WebSDR, 92 CQ calls, active on 40m, 20m, over 18 days, best SNR +25 dB. Heard between 2026-04-28 and 2026-06-23.

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Overview

386
Total spots
92
CQ calls
18
Days active
-4 dB
Avg SNR

Bands

20m 40m
First seen: 2026-04-28
Last seen: 2026-06-23 19:17 UTC

Frequent QSO partners observed at SO8OO

Stations JA4DLF worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJA4DLFPartnerPartner SNRMsgs
06-23 21:16 20m -4 / - M0VGB - / -12 4 Partial
06-22 21:21 20m +10 / - G0ORX - / -17 2 ✓ Confirmed
06-18 21:21 20m +10 / -16 SV1GYN -2 / -9 4 ✓ Complete
06-18 21:19 20m - / -23 DL2NAE 0 / - 2 Partial
06-18 21:17 20m -8 / -24 EA5KDN -4 / -8 9 ✓ Complete
06-18 21:16 20m - / -19 TA3ZGR -4 / - 2 ✓ Confirmed
06-18 21:11 20m +1 / +2 OH3EZ 0 / +3 4 Partial
06-18 21:11 20m - / -6 R1BQ -4 / - 2 ✓ Confirmed
06-18 21:09 20m - / -14 DL0EO +2 / - 2 ✓ Confirmed
06-18 21:08 20m - / -15 DL1R 0 / - 2 ✓ Confirmed
06-18 21:05 20m -17 / - OE8PIT +1 / -6 2 ✓ Verified
06-18 20:59 20m +5 / - RW4F +2 / +6 5 ✓ Complete
06-18 20:56 20m 0 / - SM2SCK - / -5 5 ✓ Confirmed
06-18 20:56 20m -10 / - TA3ZGR - / - 2 Partial
06-18 20:53 20m -4 / - Z31B - / -19 2 ✓ Confirmed
06-18 20:46 20m -18 / -18 HB9EKJ -4 / -13 8 ✓ Complete
06-18 20:46 20m - / -22 EB5GG 0 / - 2 ✓ Confirmed
06-18 20:44 20m - / - PD0IFI -4 / - 2 Partial
06-14 20:53 20m -12 / -14 EA1FUB +3 / - 3 Partial
06-14 20:52 20m -4 / - DK1MCS 0 / -11 4 ✓ Verified
06-14 20:49 20m -7 / -9 UE0DR +4 / -12 5 ✓ Complete
06-14 20:48 20m - / -10 SA0MRT 0 / - 2 ✓ Confirmed
06-14 20:46 20m - / -9 SP9VEY 0 / - 2 ✓ Confirmed
06-14 20:43 20m -10 / -17 BH4HGH -1 / - 4 Partial
06-14 20:43 20m -12 / -7 RA5AK -2 / -9 4 ✓ Complete
06-14 20:41 20m 0 / - ON3AVT 0 / -19 6 ✓ Verified
06-14 20:41 20m - / -17 PD1MB +1 / - 2 ✓ Confirmed
06-14 20:39 20m -4 / -13 F1HSY +2 / -2 6 ✓ Complete
06-14 20:38 20m 0 / - DK1MCS - / - 3 Partial
06-14 20:38 20m -8 / +1 F5IXN 0 / -6 5 ✓ Complete
06-14 20:36 20m -11 / -23 ON3AVT +2 / -16 5 Partial
06-14 20:35 20m - / -10 ON8SGA +4 / - 3 ✓ Confirmed
06-14 20:34 20m -6 / - RA3TD - / -3 2 ✓ Confirmed
06-14 20:32 20m - / - IQ9BF +6 / - 2 Partial
06-11 20:38 20m -11 / - BA8BLK - / +2 3 ✓ Confirmed
06-11 20:33 20m +4 / -6 RD4AAK +2 / -4 3 ✓ Complete
06-11 20:18 40m -12 / - SV1RXI - / -3 4 Partial
06-09 21:11 20m - / -25 EA4FME -1 / - 3 Partial
06-09 21:07 20m 0 / -17 EA7KO +1 / -9 4 ✓ Complete
06-09 21:03 20m -9 / - I7OXH - / -13 3 ✓ Confirmed
06-09 20:58 20m - / -19 DG9XN 0 / - 2 ✓ Confirmed
06-08 20:29 20m -13 / -5 IU4PPL 0 / - 5 ✓ Complete
06-08 20:28 20m - / -7 EW3FF +2 / - 2 ✓ Confirmed
06-08 20:27 20m -4 / -19 F4VWS 0 / - 3 Partial
06-08 20:26 20m - / -14 SP6TO +4 / - 3 ✓ Confirmed
06-08 20:23 20m -16 / -14 EA3DM +9 / -9 3 ✓ Complete
06-08 20:22 20m - / -16 3Z0L +8 / - 2 ✓ Confirmed
06-08 20:17 20m +10 / - DL6ZBD +5 / -4 4 ✓ Verified
06-08 20:15 20m - / -3 SP2WRE +6 / - 2 ✓ Confirmed
06-08 20:14 20m -12 / -15 IZ0EAE +6 / -19 5 ✓ Complete

Station Log

20m 
UTC    dB  Freq  Message
212130 +11 2718  JA4DLF SV1GYN RR73
212145  -2 2229  SV1GYN JA4DLF 73
212215  -3 2229  CQ DX JA4DLF PM75
212615  -2 2229  DL2NAE JA4DLF RR73
212645  -5 2229  CQ DX JA4DLF PM75 (x2)
211630 -11 2148  CR7BUJ JA4DLF PM75
212115 +13 2960  JA4DLF G0ORX -17 (x2)
211415 -12 2498  CQ DX JA4DLF PM75
211600 -10 1689  JA4DLF M0CKX IO93
211600  -3 2498  JA4DLF M0VGB -12 (x4)
40m 
UTC    dB  Freq  Message
190230  +2 2757  JA4DLF YO8RQP KN37 (x4)
190800  +0  842  JA4DLF RJ6B KN95 (x3)
190930  -5 1633  JA4DLF RW6HPI LN25 (x2)
191730 -19 2288  <JY80ID> JA4DLF PM75
191845  -8 1588  JA4DLF <...> -19
201815  -8 1990  JA4DLF SV1RXI KM08 (x4)

SNR History by Band