JA3SIA — FT8 station from Japan

Japan Grid: LO20

Amateur radio station JA3SIA operating from Japan (grid square LO20). 561 FT8 spots received at SO8OO WebSDR, 17 CQ calls, active on 80m, 20m, over 28 days, best SNR +23 dB. Heard between 2026-04-23 and 2026-06-09.

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Overview

561
Total spots
17
CQ calls
28
Days active
-3 dB
Avg SNR

Bands

80m 20m
First seen: 2026-04-23
Last seen: 2026-06-09 13:21 UTC

Frequent QSO partners observed at SO8OO

Stations JA3SIA worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJA3SIAPartnerPartner SNRMsgs
06-09 15:20 20m -7 / - RA4ABH - / - 2 Partial
06-09 14:31 20m -7 / - RN3QTS - / -15 2 ✓ Confirmed
06-09 13:50 20m -1 / - RA6FRI - / - 2 Partial
06-09 12:29 20m -4 / - RA4Y - / -2 2 ✓ Confirmed
06-07 17:51 20m -3 / - DL6LAG - / - 3 Partial
06-07 17:50 20m +5 / - UR3QZ - / - 3 Partial
06-07 17:31 20m +8 / - R9JE - / -11 2 ✓ Confirmed
06-07 17:27 20m +2 / - RZ3ZY - / -15 2 ✓ Confirmed
06-07 17:21 20m +4 / - S56UVB - / - 4 Partial
06-07 17:18 20m +18 / - F5RRS - / -16 4 Partial
06-07 16:56 20m -2 / - RQ6B - / - 2 Partial
06-07 16:55 20m -10 / - F4BYA - / - 3 Partial
06-07 16:52 20m -6 / - R3RAQ - / -14 2 Partial
06-07 16:52 20m -7 / - UI6O - / - 6 Partial
06-07 14:49 20m -8 / - RK4UZ - / -16 2 ✓ Confirmed
06-07 13:06 20m -1 / - UN2NC - / -14 2 Partial
06-06 16:12 20m -8 / - UA3GIE - / -14 2 ✓ Confirmed
06-06 15:58 20m -13 / - XW4KV - / -21 2 ✓ Confirmed
06-06 14:36 20m -20 / - UA9LCY - / -14 2 ✓ Confirmed
06-06 14:28 20m -17 / - YB1LCD - / -14 2 ✓ Confirmed
06-06 14:27 20m -17 / - UA9LCY - / -12 2 Partial
06-06 12:11 20m -9 / - JM7EJW - / +1 2 Partial
06-06 09:26 20m -1 / - <...> - / -19 2 Partial
06-05 18:36 20m +7 / - RA6UAR - / -20 3 Partial
06-05 18:30 20m +7 / - RA6UAR - / -16 4 Partial
06-05 18:23 20m +4 / - RA6UAR - / -15 7 Partial
06-05 18:03 20m -13 / - BG5CZD - / -9 2 ✓ Confirmed
06-05 17:30 20m - / - SP9ZR -12 / - 2 Partial
06-05 15:24 20m -5 / - JH3UHG - / - 2 Partial
06-05 15:11 20m +6 / - RU3KV - / - 2 Partial
06-05 15:05 20m +4 / - RU3KV - / - 5 Partial
06-05 14:51 20m +6 / - UA9TO - / -18 2 ✓ Confirmed
06-05 14:42 20m +7 / - R3NB - / -20 2 ✓ Confirmed
06-05 14:39 20m -10 / - RY9W - / -15 2 Partial
06-04 04:26 20m -14 / - BG0AYW - / -12 2 Partial
06-03 18:02 20m -14 / - PD0LK - / - 2 Partial
06-03 17:49 20m +2 / - EA5HEU - / - 2 Partial
06-03 17:31 20m -4 / - DK4UX - / - 2 Partial
06-03 17:12 20m -10 / - F1PBZ - / -18 2 ✓ Confirmed
06-03 16:41 20m -2 / - TA4DX - / -24 3 Partial
06-03 16:26 20m -13 / - UA6HBJ - / -19 3 ✓ Confirmed
06-03 16:23 20m 0 / - E77FN - / - 2 Partial
06-03 16:16 20m -16 / - DL1CC - / -5 2 ✓ Confirmed
06-02 21:46 20m +14 / - M0BEW - / -22 2 ✓ Confirmed
06-02 19:53 20m 0 / -12 IZ4EFV -18 / -8 3 ✓ Complete
06-02 19:49 20m - / - IK4HLQ -16 / - 4 Partial
06-02 19:47 20m +1 / -9 F1DJY -18 / -15 4 ✓ Complete
06-02 19:41 20m - / -13 R2SBI -15 / - 3 ✓ Confirmed
06-02 19:38 20m - / -20 SQ5JMO -16 / - 2 Partial
06-02 19:35 20m - / -9 DL2MIJ -16 / - 3 ✓ Confirmed

Station Log

20m 
UTC    dB  Freq  Message
175245  +1 2274  JA3SIA DL6LAG JO44
180315  +1 1017  JA3SIA DK1MCS JN57
180845  -1 1710  JA3SIA F4FSY -18
120630 -17 2594  JA3SIA RI0SP -22
163315  -5 1197  JA3SIA R6HD RR73
122915  -5 2490  JA3SIA RA4Y -02 (x2)
123415 -20 2056  JA3SIA YC2UKL -20
131045 -11 1016  JA3SIA BG0AYW -10
135045  +1 1016  JA3SIA RA6FRI LN13 (x2)
143130  -5 1912  JA3SIA RN3QTS -15 (x2)
152030  -6 1016  JA3SIA RA4ABH LO20 (x2)
80m 
UTC    dB  Freq  Message
185245  +0  952  JA3SIA UA3QNA -08 (x2)

SNR History by Band