S57M — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving S57M, decoded by SO8OO in southeastern Poland. 117 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-10-22.
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 117 FT8 messages attributed to S57M as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (76%), followed by 160 m (23%) and 60 m (1%). Several six-hour UTC windows tied for the largest share (91%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (99%); the estimated median was +3 dB.
Overview
Bands
Last attributed message: 2026-10-22 01:43 UTC
Observed FT8 message patterns
- Attributed sample
- 117 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- +3 dB
- Estimated 10th-90th percentile
- -2 to +14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 116.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with S57M in decoded directed-looking exchanges:
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 S57M
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
- JN76 · 102 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 631 km (approx.)
- Last such locator decoded
- 2026-10-22 01:43 UTC
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 UTC | Band | S57M S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 01:47 | 60m | - / - | EA1IOK | -1 / - | 5 | Partial capture |
| 10-22 01:47 | 60m | - / - | EB3JT | +5 / - | 7 | Partial capture |
| 10-22 01:47 | 60m | - / -7 | OS4K | -20 / - | 2 | Partial capture |
| 10-17 16:47 | 160m | - / - | UA4FKT | -14 / - | 2 | Partial capture |
| 10-17 16:43 | 160m | +7 / - | H49A | - / -21 | 8 | ✓ Closing fragment |
| 08-29 23:26 | 160m | +14 / - | RI1FJL | - / -17 | 15 | ✓ Closing fragment |
| 08-27 21:18 | 80m | +2 / - | RI1FJL | - / -14 | 67 | ✓ Closing fragment |
| 08-27 19:51 | 160m | - / - | UB9MEU | -23 / - | 3 | Partial capture |
| 08-27 19:49 | 160m | +18 / -15 | RA6ATZ | -14 / - | 5 | Partial capture |
| 08-27 19:32 | 80m | +6 / - | RI1FJL | - / - | 22 | Partial capture |
| 08-26 17:57 | 160m | +7 / - | OM3SX | +17 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 014345 -13 2581 3B8FA S57M JN76 014700 -22 1878 S57M OS4K -07 014700 +7 2581 S57M EB3JT JN01 014700 -2 1079 S57M EA1IOK IN62 014730 -19 1877 S57M OS4K -07 014730 +4 2581 S57M EB3JT JN01 014730 +5 1079 S57M EA1IOK IN62 014800 +10 2581 S57M EB3JT JN01 014800 -3 1079 S57M EA1IOK IN62 014830 +4 2581 S57M EB3JT JN01 014830 +1 1079 S57M EA1IOK IN62 014900 +2 2581 S57M EB3JT JN01 014900 -4 1079 S57M EA1IOK IN62 014930 +5 2581 S57M EB3JT JN01 (x2)
UTC dB Audio Message 233245 +14 2402 RI1FJL S57M R-17 (x3) 164315 +2 2651 H49A S57M JN76 (x8) 164700 -16 2651 S57M UA4FKT LO23 (x2) 195415 +16 2500 7P8GE S57M JN76 (x2)
UTC dB Audio Message 214715 +3 2429 RI1FJL S57M JN76 (x15)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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