JA0RCK — FT8 station from Japan

Japan Grid: IO91

Amateur radio station JA0RCK operating from Japan (grid square IO91). 154 FT8 spots received at SO8OO WebSDR, 4 CQ calls, active on 40m, 20m, 10m, over 29 days, best SNR +23 dB. Heard between 2026-04-24 and 2026-06-22.

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Overview

154
Total spots
4
CQ calls
29
Days active
-2 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-04-24
Last seen: 2026-06-22 18:56 UTC

Frequent QSO partners observed at SO8OO

Stations JA0RCK worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJA0RCKPartnerPartner SNRMsgs
06-22 20:53 20m -5 / - M0KSD - / - 7 Partial
06-21 19:41 20m -1 / - EA1CQ - / - 4 Partial
06-17 20:30 20m - / - TA4WH -5 / - 6 Partial
06-17 19:30 20m +5 / - RZ4FWA -3 / - 2 ✓ Verified
06-17 19:23 20m 0 / - TJ1GD/P -5 / -7 5 ✓ Verified
06-15 19:43 20m -16 / - HB9VAA - / - 2 Partial
06-14 20:04 20m +5 / -14 DF1OLS +3 / - 6 Partial
06-14 20:02 20m +2 / -14 G0BKC +2 / -10 4 ✓ Complete
06-14 19:59 20m - / -10 SP3KAU 0 / - 2 ✓ Confirmed
06-14 19:57 20m -6 / - IQ6PE +1 / -6 2 Partial
06-14 19:56 20m -23 / -9 TA1SW -2 / - 4 ✓ Verified
06-14 19:55 20m - / - 9A5AZK -2 / - 2 Partial
06-14 19:53 20m - / -14 9K2KU 0 / - 3 ✓ Confirmed
06-14 19:52 20m - / -23 OZ1IKU -1 / - 3 ✓ Confirmed
06-14 19:49 20m - / - EW4IDP 0 / - 2 Partial
06-14 19:48 20m - / - MM3WYM 0 / - 2 Partial
06-14 19:44 20m - / - 9K2MP 0 / - 2 Partial
06-11 21:00 20m - / -7 IQ9GD -7 / - 4 ✓ Confirmed
06-11 20:58 20m - / -16 BD7KWU -8 / - 2 ✓ Confirmed
06-11 20:57 20m - / -7 E70A -4 / - 3 ✓ Confirmed
06-07 19:51 20m +15 / -8 EW3FF -1 / -10 6 ✓ Complete
06-07 19:43 20m +12 / - R4NDG - / - 3 Partial
06-07 19:29 20m +14 / - SV1QVZ - / -19 2 ✓ Confirmed
06-05 21:38 20m -6 / - BH4HGH - / -5 3 ✓ Confirmed
06-04 20:33 20m - / - OJ0Z -11 / - 8 Partial
06-04 20:21 20m - / - OJ0Z -13 / - 9 Partial
06-04 20:19 20m +3 / -7 F4IBJ -10 / -19 7 ✓ Complete
06-04 20:18 20m +4 / -12 EI3GRB -8 / -14 5 ✓ Complete
06-04 20:17 20m - / - CT1BFP -6 / - 2 Partial
06-04 20:15 20m - / - OJ0Z -6 / - 4 Partial
06-04 20:12 20m - / - SP9TEX -8 / - 2 ✓ Confirmed
06-04 20:07 20m - / -14 SP9TEX -9 / - 4 ✓ Confirmed
06-04 20:05 20m - / - OJ0Z -11 / - 7 Partial
05-29 21:13 20m -4 / -1 BG2FYO -1 / +2 4 ✓ Complete
05-29 21:12 20m 0 / -16 4X5DK +4 / -12 4 ✓ Complete
05-28 21:26 20m -3 / -21 9H4JX -3 / - 12 ✓ Verified
05-28 21:14 20m -4 / - EA5JLB - / -6 5 Partial
05-28 21:12 20m -9 / -20 G4YLJ +1 / -24 16 ✓ Complete
05-28 20:54 20m - / - 7Z1MM 0 / - 2 Partial
05-28 20:44 20m - / - E77FN -10 / - 5 Partial
05-27 21:12 20m - / - IT9IJF -6 / - 2 Partial
05-27 21:05 20m - / - SP0ZKR -7 / - 2 Partial
05-25 21:03 20m - / - LB5SK -10 / - 2 Partial
05-24 22:09 20m +2 / - TB7HBY -5 / -15 4 ✓ Verified
05-24 22:05 20m - / - TB7HBY -9 / - 3 Partial
05-24 21:14 20m - / -22 A91GCC -10 / - 4 ✓ Confirmed
05-24 21:07 20m - / -19 DL7MDX -9 / - 6 ✓ Confirmed
05-22 21:31 20m -7 / - T88KY - / +7 2 ✓ Confirmed
05-21 21:12 20m - / -25 9A5MP -1 / - 3 Partial
05-21 21:10 20m - / - CT1EEX +3 / - 4 Partial

Station Log

20m 
UTC    dB  Freq  Message
203500  -2 2839  OZ7CL JA0RCK PM97
194145  -2  622  JA0RCK EA1CQ IN83 (x4)
213300  -9 1294  JA0RCK AO25HSJ -16
213330 -12 1294  JA0RCK RR73; BA5AN <...> -10
204745  -5 2539  JA0RCK 9A/DL3YAT -10
205345  -8  746  JA0RCK M0KSD IO91 (x7)
10m 
UTC    dB  Freq  Message
113100 -16  819  JA0RCK 9X5KM -02
113130 -13  819  JA0RCK RR73; JH2QMT <...> +04
110315 -14 1145  JA0RCK A60PC/5 -04
40m 
UTC    dB  Freq  Message
195130 +10  899  JA0RCK 9A1CCB RR73
195230  -2 1539  JA0RCK IZ0JSE JN61 (x12)
201500 -11 2216  JA0RCK <...> -22 (x2)

SNR History by Band