JA8TRT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JA8TRT, decoded by SO8OO in southeastern Poland. 144 related FT8 messages, 4 CQ messages, observed on 20m, 10m, across 10 UTC dates. Heard between 2026-04-21 and 2026-07-20.

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee

Overview

144
Related messages
4
CQ messages
10
UTC dates heard
-2 dB
Mean decoder S/N

Bands

20m 10m
First seen: 2026-04-21
Last seen: 2026-07-20 17:01 UTC

Frequent QSO partners observed at SO8OO

Stations JA8TRT 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 UTCBandJA8TRT S/NCounterpartCounterpart S/NMsgsCapture
07-20 18:58 20m - / - OK4SD +8 / - 4 Partial capture
07-20 18:56 20m - / - DD6WF +8 / - 2 Partial capture
07-20 18:38 20m - / - F4IIX -14 / - 2 Partial capture
07-20 18:37 20m - / - DD6WF +10 / - 2 Partial capture
07-20 18:32 20m - / - UW5ESX -3 / - 5 Partial capture
07-20 18:31 20m - / -13 YO3IZI 0 / - 4 ✓ Closing fragment
07-20 18:26 20m - / -14 RX3RZ 0 / - 3 ✓ Closing fragment
07-20 18:26 20m - / - UW5ESX -3 / - 7 Partial capture
07-20 17:59 20m - / - F5RRS -12 / - 2 Partial capture
07-20 17:58 20m - / - DD6WF +4 / - 2 Partial capture
07-20 17:53 20m - / - YO3IZI +1 / - 8 Partial capture
07-20 17:48 20m - / - YO3IZI +8 / - 2 Partial capture
06-27 21:26 10m - / -13 CE2SV -1 / - 2 ✓ Closing fragment
06-17 18:18 20m -9 / -23 IU1RSZ +8 / - 3 ✓ Closing observed
06-17 18:17 20m -8 / -22 IW9FRA -13 / -20 10 Partial capture
06-17 18:11 20m - / - IW6MSQ +4 / - 4 Partial capture
06-17 18:07 20m -8 / - R2FL - / -17 2 ✓ Closing fragment
06-17 17:58 20m - / -10 IQ4JO +17 / - 3 ✓ Closing fragment
06-17 17:36 20m - / -14 DA5UL +9 / - 3 ✓ Closing fragment
06-17 17:31 20m -11 / -9 RA3FH +3 / - 4 ✓ Closing observed
06-17 17:29 20m -12 / - W7OLY - / -15 2 Partial capture
06-17 17:28 20m - / - R3DHP +2 / - 2 Partial capture
06-17 17:27 20m - / - DA5UL +13 / - 4 Partial capture
06-06 20:43 20m - / -18 OM7JG -14 / - 2 ✓ Closing fragment
06-06 19:44 20m - / -12 EA1A +9 / - 2 ✓ Closing fragment
06-06 19:02 20m - / -23 Z34K 0 / - 4 ✓ Closing fragment
06-06 19:01 20m - / -15 OE3UKW -22 / - 2 Partial capture
06-06 18:57 20m - / -3 BA8BLK -14 / - 2 Partial capture
06-06 18:56 20m - / -16 R9LM +9 / - 2 ✓ Closing fragment
06-06 18:45 20m - / -11 YB1SKR -17 / - 2 ✓ Closing fragment
06-06 18:27 20m - / -11 RI0SP -4 / - 2 Partial capture
06-03 17:13 20m - / -5 E75AA -5 / - 3 Partial capture
06-03 17:08 20m - / -15 E75AA -3 / - 3 Partial capture
06-03 16:51 20m - / -16 DK1MAX +15 / - 3 ✓ Closing fragment
06-02 19:32 20m - / -23 IZ8VYU -18 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
183300  -2 2985  JA8TRT UW5ESX KN67
183300  +4  606  JA8TRT YO3IZI 73
183330  +2 2985  JA8TRT UW5ESX KN67 (x2)
183700  +6 2915  JA8TRT DD6WF JO62 (x2)
183800 -15 2442  JA8TRT F4IIX IN95 (x2)
184930  +2 2944  JA8TRT DD6WF JO62 (x3)
185830 +11  563  JA8TRT OK4SD JN79 (x4)
10m 
UTC    dB Audio  Message
212600  +0 2555  JA8TRT CE2SV -13 (x2)

Decoder S/N history by band

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