JA7NUM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JA7NUM, decoded by SO8OO in southeastern Poland. 37 related FT8 messages, observed on 40m, 20m, across 8 UTC dates. Heard between 2026-05-16 and 2026-08-06.

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

37
Related messages
0
CQ messages
8
UTC dates heard
-8 dB
Mean decoder S/N

Bands

First seen: 2026-05-16
Last seen: 2026-08-06 09:25 UTC

Frequent QSO partners observed at SO8OO

Stations JA7NUM worked most often, as logged from our receiver:

Activity Heatmap

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 UTCBandJA7NUM S/NCounterpartCounterpart S/NMsgsCapture
08-06 11:23 20m - / - LA8QW -13 / - 4 Partial capture
08-04 06:31 20m - / -16 UA3PI -19 / - 3 ✓ Closing fragment
07-25 21:38 20m - / -11 M7JVT -8 / - 2 ✓ Closing fragment
07-24 21:00 20m - / -22 E70Z -19 / - 5 ✓ Closing fragment
07-24 20:58 20m - / - RA3ZH -3 / - 4 Partial capture
06-17 09:21 20m - / - RA3DRI -4 / - 4 Partial capture
06-12 03:06 20m - / - RW3TY -5 / - 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
210130 -16 2201  JA7NUM E70Z JN94 (x3)
213815  -9 1283  JA7NUM M7JVT -11 (x2)
045545 -21 1989  JA7NUM LZ4VR KN13
045615 -11 1962  JA7NUM IZ8VYU JN71
063100 -18 1547  JA7NUM UA3PI -16 (x3)
073200  -5 2934  JA7NUM DF7EF JO30
112315 -13 2533  JA7NUM LA8QW JP43 (x4)
40m
UTC    dB Audio  Message
221600  -9  277  JA7NUM ON7COB R-17

Decoder S/N history by band

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