JA8JAK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Locator transmitted in a decoded message: QN13

Receiver-side FT8 activity involving JA8JAK, decoded by SO8OO in southeastern Poland. 154 related FT8 messages, observed on 80m, 40m, 20m, 10m, across 33 UTC dates. Heard between 2026-05-25 and 2026-08-23.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

154
Related messages
0
CQ messages
33
UTC dates heard
-4 dB
Mean decoder S/N

Bands

First seen: 2026-05-25
Last seen: 2026-08-23 17:50 UTC

Activity Heatmap

Locator transmitted by JA8JAK

Approximate centre of QN13, decoded 2026-08-23 20:06 UTC. A transmitted locator is not proof of the operator's permanent location.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandJA8JAK S/NCounterpartCounterpart S/NMsgsCapture
08-23 20:04 40m -13 / - CN8NS - / - 3 Partial capture
08-23 19:50 40m -9 / -12 9A3TN +10 / -2 5 ✓ Full exchange observed
08-22 19:54 20m +1 / - BI1AFK - / 0 3 ✓ Closing fragment
08-22 19:53 20m - / -19 EA7AQY -8 / - 6 ✓ Closing fragment
08-22 19:53 20m +2 / - OE5OEL - / -15 2 ✓ Closing fragment
08-22 19:51 20m 0 / +7 I6PJC +3 / -3 6 ✓ Full exchange observed
08-22 19:49 20m -5 / -16 SM6KTO -10 / -7 4 ✓ Full exchange observed
08-19 19:56 80m - / -17 UR1CCT +18 / - 4 ✓ Closing fragment
08-16 20:25 20m - / -24 DL1DV +2 / - 3 ✓ Closing fragment
08-16 20:13 20m - / -13 F4IBJ +1 / - 4 ✓ Closing fragment
08-16 20:12 20m - / -12 DH5AZ +2 / - 6 ✓ Closing fragment
08-10 20:08 20m - / -13 IK5AUL -7 / - 5 ✓ Closing fragment
08-10 20:07 20m - / -11 ON4AZR -10 / - 2 Partial capture
08-01 20:55 20m - / -17 PD0HLA -8 / - 4 Partial capture
08-01 20:42 20m - / -15 RW6HPS -11 / - 2 Partial capture
07-29 20:32 20m - / -9 4L7T -14 / - 2 ✓ Closing fragment
07-29 20:30 20m - / -8 M1HPR -16 / - 2 ✓ Closing fragment
07-29 20:15 20m - / -13 GM4UYK -24 / - 2 ✓ Closing fragment
07-29 20:11 20m - / -6 F6EKI +8 / - 3 ✓ Closing fragment
07-28 20:02 20m - / -7 9A5E -6 / - 2 ✓ Closing fragment
07-28 20:02 20m - / -13 UX5UO -9 / - 5 ✓ Closing fragment
07-23 06:55 20m - / -13 GJ0KYZ -17 / - 2 ✓ Closing fragment
07-17 20:53 20m - / -15 R2AL -1 / - 3 ✓ Closing fragment
07-11 19:28 20m - / -18 DL1NCH -10 / - 2 ✓ Closing fragment
07-09 19:15 40m - / - IW9HPG -6 / - 2 Partial capture
07-06 19:53 20m - / -10 YO9PH 0 / - 2 ✓ Closing fragment
06-28 20:33 20m - / -16 G7NUT -1 / - 5 ✓ Closing fragment
06-28 20:22 20m - / -20 EA3AYQ -6 / - 4 ✓ Closing fragment
06-26 20:37 20m - / -13 F1SZC -3 / - 3 ✓ Closing fragment
06-25 20:00 20m - / -14 F6GGA -1 / - 3 ✓ Closing fragment
06-24 19:22 20m - / -22 US3LX -16 / - 4 ✓ Closing fragment
06-24 19:21 20m - / - PD2WL -12 / - 3 Partial capture
06-22 21:06 20m - / 0 S57CT +1 / - 2 ✓ Closing fragment
06-18 20:35 20m -13 / -14 CR7BUJ -4 / -10 6 ✓ Full exchange observed
06-18 20:32 20m - / -18 SM3MLX +1 / - 3 ✓ Closing fragment
06-17 19:48 20m -4 / -14 US5HL +8 / - 3 ✓ Closing observed
06-17 19:45 20m -3 / -17 M9WHQ -8 / -14 3 ✓ Full exchange observed
06-09 20:33 20m -12 / - BI1HJR - / -9 2 ✓ Closing fragment
06-09 20:32 20m -13 / -16 IZ0RPS +4 / -12 5 ✓ Full exchange observed
06-09 20:10 40m - / -2 9X5KM -7 / - 3 Partial capture
06-07 07:03 10m - / +2 FR5ZE -12 / - 2 ✓ Closing fragment
06-04 19:44 20m -4 / - 9A3A - / - 2 Partial capture
06-01 20:01 20m -7 / -25 SV9TLU +19 / -8 8 Partial capture
06-01 19:56 20m -6 / -1 7Z1IS -4 / -9 7 ✓ Full exchange observed
06-01 19:50 20m -8 / - EP2AES - / - 4 Partial capture
05-31 20:25 20m -9 / - EP2AES - / - 3 Partial capture
05-31 20:21 20m -12 / - IQ9NI -16 / -8 4 ✓ Closing observed
05-31 20:18 20m -4 / -4 OE9GWV -10 / -19 8 ✓ Full exchange observed
05-31 20:16 20m -6 / - SV1MOZ -11 / -7 4 ✓ Closing observed
05-31 20:15 20m -7 / -11 IK6BFH 0 / - 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m
UTC    dB Audio  Message
201100  -8  775  JA8JAK 9X5KM -02 (x2)
201200  -9  774  JA8JAK RR73; SP3FHV <...> +00
191530  -6 1018  JA8JAK IW9HPG JM78 (x2)
201500  -9 2565  JA8JAK A71UN RR73
195000  -9 2759  9A3TN JA8JAK QN13
195015 +11 1574  JA8JAK 9A3TN -12
195030  -8 2760  9A3TN JA8JAK R-02
195045  +8 1574  JA8JAK 9A3TN RR73
195100  -9 2759  9A3TN JA8JAK 73
195130  -8 2759  R3BDQ JA8JAK R-09
200445 -14 2749  CN8NS JA8JAK QN13 (x3)
20m
UTC    dB Audio  Message
195230  +2  367  I6PJC JA8JAK RR73
195245  +6  366  JA8JAK I6PJC 73
195245 -17 2039  JA8JAK BG7BVI -03
195300  -2  367  OE5OEL JA8JAK -15 (x2)
195345  -5 1205  JA8JAK EA7AQY -19
195400  +2  367  BI1AFK JA8JAK +00
195415  -6 1205  JA8JAK EA7AQY -19
195430  +0  367  BI1AFK JA8JAK RR73
195445  -7 1205  JA8JAK EA7AQY -18 (x2)
195530  +2  367  BI1AFK JA8JAK RR73
195545 -11 1205  JA8JAK EA7AQY -18 (x2)
195615  +1  368  JA8JAK EB5AL IM99
80m
UTC    dB Audio  Message
195630 +16  541  JA8JAK UR1CCT KN69 (x4)
10m
UTC    dB Audio  Message
070315 -12 1190  JA8JAK FR5ZE +02 (x2)
072430  -9  823  JA8JAK 9X5KM -03

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.