JA4GGM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JA4GGM, decoded by SO8OO in southeastern Poland. 42 related FT8 messages, observed on 20m, across 10 UTC dates. Heard between 2026-05-29 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

42
Related messages
0
CQ messages
10
UTC dates heard
+4 dB
Mean decoder S/N

Bands

20m
First seen: 2026-05-29
Last seen: 2026-08-23 11:25 UTC

Frequent QSO partners observed at SO8OO

Stations JA4GGM 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 UTCBandJA4GGM S/NCounterpartCounterpart S/NMsgsCapture
08-23 13:21 20m - / -12 ON4AOI +6 / - 3 Partial capture
08-21 13:37 20m - / - SP1DSZ +6 / - 13 ✓ Closing fragment
08-21 13:34 20m - / -17 SP6JIU +5 / - 4 ✓ Closing fragment
08-20 17:20 20m - / -13 ON4IQ +15 / - 3 ✓ Closing fragment
08-20 16:50 20m - / -3 IN3BFW +20 / - 2 ✓ Closing fragment
08-07 13:59 20m - / - RA3ZH -4 / - 2 ✓ Closing fragment
07-21 00:03 20m - / -10 9A5E 0 / - 2 ✓ Closing fragment
06-10 16:36 20m - / -13 SV9ANC -12 / - 2 ✓ Closing fragment
05-31 13:41 20m - / - RZ4FWA -3 / - 2 Partial capture
05-29 16:16 20m - / -18 TA4SM +7 / - 6 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
133800  +3 1578  JA4GGM SP1DSZ JO73 (x11)
132100  +4  604  JA4GGM ON4AOI -12 (x4)

Decoder S/N history by band

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