JA7DXX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Locator transmitted in a decoded message: QM08

Receiver-side FT8 activity involving JA7DXX, decoded by SO8OO in southeastern Poland. 149 related FT8 messages, 4 CQ messages, observed on 160m, 40m, 20m, across 29 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

149
Related messages
4
CQ messages
29
UTC dates heard
-3 dB
Mean decoder S/N

Bands

First seen: 2026-05-25
Last seen: 2026-08-23 17:55 UTC

Activity Heatmap

Locator transmitted by JA7DXX

Approximate centre of QM08, decoded 2026-08-19 20:07 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 UTCBandJA7DXX S/NCounterpartCounterpart S/NMsgsCapture
08-23 19:51 40m - / - DL1GLO +5 / - 10 Partial capture
08-23 19:51 40m -21 / -13 II7MGBA -9 / - 3 ✓ Closing observed
08-23 19:40 40m -20 / -12 II7MGBT -6 / -5 4 Partial capture
08-20 19:17 20m - / -7 D2IM -2 / - 2 ✓ Closing fragment
08-19 19:40 160m - / - UX5UO 0 / - 4 Partial capture
08-19 19:40 160m - / -6 YU1LD +15 / - 5 ✓ Closing fragment
08-11 19:12 40m - / - OK2PYA -11 / - 4 Partial capture
08-10 20:03 40m - / -20 HB10GBT -14 / - 8 Partial capture
08-10 19:55 40m - / - DF8AA -3 / - 2 Partial capture
08-10 19:55 40m - / - HA9OA +1 / - 3 Partial capture
08-04 19:26 40m - / -15 YO8PS -11 / - 6 ✓ Closing fragment
08-04 18:53 20m - / -18 RW6HPS -20 / - 2 ✓ Closing fragment
08-04 18:51 20m - / -14 YO9PH -21 / - 2 ✓ Closing fragment
07-22 20:01 20m - / -13 EA8AT -16 / - 4 ✓ Closing fragment
07-21 20:21 20m - / - DL1R +5 / - 9 Partial capture
07-21 20:20 20m - / - RZ4FWA -9 / - 4 Partial capture
07-21 20:14 20m - / -8 M0LUX -11 / - 5 Partial capture
07-21 20:11 20m - / - IU0CSH -3 / - 3 Partial capture
07-15 20:12 20m - / -16 YO4DWD -12 / - 2 ✓ Closing fragment
07-13 18:39 40m - / -17 TA2BMV -24 / - 2 Partial capture
07-12 18:41 20m - / - R6LKG +2 / - 2 Partial capture
07-12 18:41 20m - / -18 IZ8QXY +5 / - 8 ✓ Closing fragment
07-12 18:41 20m - / -7 R6DJR -1 / - 2 ✓ Closing fragment
07-12 18:40 20m - / -8 RK6AAC +8 / - 2 ✓ Closing fragment
07-06 19:11 20m - / - 4L7T +2 / - 2 Partial capture
07-06 19:02 20m - / -11 UT3RO -12 / - 3 ✓ Closing fragment
06-21 19:05 20m - / -14 EC3A -12 / - 4 ✓ Closing fragment
06-16 19:32 20m -16 / - <...> - / - 8 Partial capture
06-10 19:59 20m -6 / - <...> - / -10 2 Partial capture
06-10 18:52 20m -17 / - A61OK - / - 3 Partial capture
06-08 07:09 20m - / -12 RI0SP -8 / - 2 Partial capture
06-07 19:34 20m -9 / -9 IQ9BF +6 / -3 10 ✓ Full exchange observed
06-05 20:05 40m - / -19 TA3GO +2 / - 2 ✓ Closing fragment
06-02 20:19 20m -14 / - TL8BNW - / -7 2 ✓ Closing fragment
06-02 20:14 20m -15 / - TL8BNW - / - 2 Partial capture
06-01 20:26 20m -5 / - IQ8PC - / -15 4 ✓ Closing fragment
06-01 20:23 20m -8 / - OM0RX - / -12 2 ✓ Closing fragment
06-01 20:22 20m -7 / - <...> - / -15 2 Partial capture
05-31 20:24 20m -11 / - EP2AES - / -18 7 Partial capture
05-31 20:21 20m -6 / - RZ4FWA - / 0 2 ✓ Closing fragment
05-31 20:17 20m -6 / - VK5PO/P - / -10 6 Partial capture
05-30 19:34 20m - / - IZ0MIT +2 / - 2 Partial capture
05-30 19:34 20m - / -13 RL3K +9 / - 3 ✓ Closing fragment
05-30 19:31 20m -9 / -18 M0BEW +6 / - 5 ✓ Closing observed
05-30 19:06 20m - / -13 EA3ADX +1 / - 6 Partial capture
05-30 19:05 20m - / - F5RRS +4 / - 2 Partial capture
05-30 19:04 20m -16 / - BH4GWF - / +5 2 ✓ Closing fragment
05-30 19:00 20m -18 / - R2BQM - / +8 6 ✓ Closing fragment
05-29 19:37 40m - / -15 EM90ZMV +4 / - 2 Partial capture
05-27 19:31 40m - / -12 EM90ZMV +4 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
194215 -18 2066  <II7MGBT> JA7DXX R-09
195100  -9 1821  JA7DXX II7MGBA -13
195100  +7 2575  JA7DXX DL1GLO JN47
195130  -9 1821  <JA7DXX> II7MGBA RR73
195130  +4 2575  JA7DXX DL1GLO JN47
195145 -21 1820  II7MGBA JA7DXX 73
195200  +5 2575  JA7DXX DL1GLO JN47
195230  -8 1541  JA7DXX IK4ZII -09
195230  +5 2575  JA7DXX DL1GLO JN47 (x7)
20m
UTC    dB Audio  Message
202515  +2 2723  JA7DXX DL1R JN58
200115 -17 1404  JA7DXX EA8AT -13 (x4)
185130 -21 1816  JA7DXX YO9PH -14 (x2)
185300 -20 1376  JA7DXX RW6HPS R-18 (x2)
185945 -13 1000  JA7DXX EN35UKR -18
190345  +5 2386  JA7DXX EA1B IN83
190845 -23 1359  JA7DXX 7Z1BQ RR73
200715 -24 1779  OJ0YL JA7DXX QM08
191700  +1 2376  JA7DXX D2IM -07 (x2)
160m
UTC    dB Audio  Message
194030  +0 1162  JA7DXX UX5UO KO50
194030 +11  838  JA7DXX YU1LD KN04
194100  -2 1162  JA7DXX UX5UO KO50
194100 +14  770  JA7DXX YU1LD KN04 (x4)
194300  -1 1162  JA7DXX UX5UO KO50 (x2)

Decoder S/N history by band

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