BY6SX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: OM70

Receiver-side FT8 activity involving BY6SX, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-30 and 2026-07-05.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 34 FT8 messages attributed to BY6SX as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (97%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (71%); the estimated median was -11 dB.

Overview

34
Messages attributed
5
UTC dates decoded
13
Active 15-min windows
-11 dB
Estimated median S/N

Bands

First attributed message: 2026-06-30
Last attributed message: 2026-07-05 19:12 UTC

Observed FT8 message patterns

Attributed sample
34 messages
Active dates
5 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-18 to -8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 5.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to BY6SX

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
OM70 · 24 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,679 km (approx.)
Last such locator decoded
2026-07-04 17:26 UTC

Other locator fields attributed to this token: OM81 (6).

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

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 UTCBandBY6SX S/NCounterpartCounterpart S/NMsgsCapture
07-05 23:33 20m - / -25 UT2UB +3 / - 3 Partial capture
07-05 23:26 20m - / - EA5JLX -16 / - 2 Partial capture
07-05 22:28 20m - / -22 CT1BWU -6 / - 7 ✓ Closing fragment
07-05 20:33 40m - / -3 DA0WWA +2 / - 3 Partial capture
07-05 19:41 20m - / +8 TM8WWA -4 / - 2 ✓ Closing fragment
07-05 19:29 20m - / - HB9FMC -14 / - 2 Partial capture
07-05 19:27 20m - / -22 ON7DJ -12 / - 3 ✓ Closing fragment
07-05 19:26 20m - / - IZ1JIZ -8 / - 2 Partial capture
07-05 19:23 20m - / - OE7LVI -13 / - 2 Partial capture
07-05 19:20 20m - / -9 DF1IH -10 / - 2 ✓ Closing fragment
07-05 19:17 20m - / - F4MOH -6 / - 2 Partial capture
07-05 19:16 20m - / 0 DH1JG -10 / - 3 ✓ Closing fragment
07-05 19:13 20m - / - UR5FFC -10 / - 2 Partial capture
07-05 19:09 20m - / 0 DH1JG -9 / - 4 Partial capture
07-05 19:08 20m - / -20 M1WLK +1 / - 3 Partial capture
07-05 19:03 20m - / - G4VJL -7 / - 5 Partial capture
07-05 19:02 20m - / - F4BYA -8 / - 6 Partial capture
07-05 18:56 20m - / - F4BYA -10 / - 2 Partial capture
07-05 18:52 20m - / - DF1IH -4 / - 3 Partial capture
07-05 18:52 20m - / - F4BYA -6 / - 2 Partial capture
07-05 18:46 20m - / -17 DL9IU +6 / - 6 ✓ Closing fragment
07-05 18:46 20m - / -18 EA5GDY -13 / - 3 ✓ Closing fragment
07-05 18:34 20m - / - UR6QV -10 / - 10 Partial capture
07-05 18:33 20m - / - F4BYA -7 / - 3 Partial capture
07-05 18:29 20m - / -15 RU3KA -8 / - 3 ✓ Closing fragment
07-05 18:24 20m - / -15 EB3BKW -13 / - 7 Partial capture
07-05 18:23 20m - / -15 DL6NDN +5 / - 3 ✓ Closing fragment
07-05 18:19 20m - / - EA3GAN -9 / - 2 Partial capture
07-05 18:18 20m - / -22 EB3BKW -6 / - 3 Partial capture
07-05 18:18 20m - / -17 EA6TU -14 / - 10 ✓ Closing fragment
07-05 18:16 20m - / -14 PD7EB -2 / - 3 ✓ Closing fragment
07-05 18:15 20m - / - PA0GSP -15 / - 2 Partial capture
07-05 18:12 20m - / -7 F4HEN -19 / - 2 Partial capture
07-05 18:07 20m - / - SP2SGZ -3 / - 2 Partial capture
07-05 18:07 20m - / -24 F4LDC -8 / - 3 Partial capture
07-05 18:07 20m - / - PA0GSP -12 / - 2 Partial capture
07-05 18:06 20m - / -22 PD2ESI +3 / - 6 Partial capture
07-05 18:06 20m - / -11 DK2LG -2 / - 3 ✓ Closing fragment
07-05 18:05 20m - / -12 PD7JLP -14 / - 4 Partial capture
07-05 18:05 20m - / - YO9FKI -19 / - 3 Partial capture
07-05 18:02 20m - / -14 EA5DKT -10 / - 4 ✓ Closing fragment
07-05 17:58 20m - / - IW5BHU -5 / - 3 Partial capture
07-05 17:57 20m - / - SP6TID -7 / - 5 Partial capture
07-05 17:57 20m - / - PD4HT -17 / - 2 Partial capture
07-05 17:57 20m - / -16 TM2WWA -18 / - 3 Partial capture
07-05 17:52 20m - / - DL9IU -7 / - 16 Partial capture
07-05 17:47 20m - / - SP6TID -11 / - 2 Partial capture
07-05 17:46 20m - / - IW5BHU +4 / - 5 Partial capture
07-05 17:40 20m - / -8 CT7AUT -16 / - 2 Partial capture
07-05 17:32 20m - / - DJ0YI -4 / - 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
194100  -4 1820  BY6SX TM8WWA +08 (x3)
222845  -7  758  BY6SX CT1BWU IM59 (x7)
232615 -17 1256  BY6SX EA5JLX IM99 (x2)
233345  +1 2358  BY6SX UT2UB KO50 (x3)
40m
UTC    dB Audio  Message
194745  +2  731  BY6SX IK2JYT JN45
202745  -7 1421  BY6SX IK2GAU JN45 (x2)
202845 -20 1651  BY6SX F4JED JN23
211645  +6  464  BY6SX RN6MA -17 (x3)
212915 -24 1879  BY6SX IN3XUG JN55
214445  -7 1066  BY6SX I1EIS -20 (x2)
203300  +0 1144  BY6SX DA0WWA -03 (x3)
215445  -5 2082  BY6SX PI4DX -13
220215 -22 1715  BY6SX TA2VUZ KM59
80m
UTC    dB Audio  Message
201715  +3 1033  BY6SX DL3MIB JN57 (x4)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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