S57MPU — 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 S57MPU, decoded by SO8OO in southeastern Poland. 5,447 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 55 UTC dates in the available aggregate history. Observed between 2026-08-13 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 5,447 FT8 messages attributed to S57MPU as the transmitting token by decoded message structure across 55 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (39%), followed by 160 m (20%) and 80 m (18%). Most decodes (60%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +4.4 dB.
Overview
Bands
Last attributed message: 2026-10-22 18:18 UTC
Observed FT8 message patterns
- Attributed sample
- 5,447 messages
- Active dates
- 55 UTC dates
- Estimated median S/N
- +4.4 dB
- Estimated 10th-90th percentile
- -6.9 to +13 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 88, moderate (-15 to -9 dB) 298, strong (≥ -8 dB) 5,061.
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 S57MPU 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 S57MPU
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 · 3,492 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 631 km (approx.)
- Last such locator decoded
- 2026-10-22 18:18 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 | S57MPU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 18:15 | 60m | +3 / - | YB2CLC | - / - | 7 | Partial capture |
| 10-22 18:14 | 60m | +8 / - | UN8DSW | - / - | 2 | Partial capture |
| 10-22 17:25 | 60m | +1 / - | OH2CUB/P | - / -11 | 3 | Partial capture |
| 10-22 17:24 | 60m | - / -7 | IU5KWL/2 | -22 / - | 2 | Partial capture |
| 10-22 17:23 | 60m | -2 / -7 | IU2VUD | -11 / - | 6 | ✓ Full exchange observed |
| 10-22 17:04 | 60m | - / - | IZ0RPS | -2 / - | 2 | Partial capture |
| 10-22 16:59 | 60m | +2 / -3 | G4RJS | -8 / +4 | 12 | ✓ Full exchange observed |
| 10-22 16:59 | 60m | -1 / - | SP5GEO | - / -1 | 2 | ✓ Closing fragment |
| 10-22 16:56 | 60m | -2 / +3 | LZ1SAD | 0 / - | 4 | ✓ Full exchange observed |
| 10-22 16:55 | 60m | - / - | IZ1XEE | 0 / - | 2 | Partial capture |
| 10-22 16:52 | 60m | -2 / +1 | DM1KM | +8 / - | 12 | ✓ Full exchange observed |
| 10-22 16:50 | 60m | +6 / -1 | F6AUS | -10 / +2 | 5 | ✓ Full exchange observed |
| 10-22 16:48 | 60m | +10 / -5 | DM5ME | -13 / +1 | 6 | ✓ Full exchange observed |
| 10-22 16:47 | 60m | +6 / +1 | LA2GCA | -18 / -21 | 5 | ✓ Full exchange observed |
| 10-20 22:18 | 60m | +10 / - | BA7IO | - / - | 14 | Partial capture |
| 10-20 22:03 | 60m | -2 / - | JY4CI | - / - | 6 | Partial capture |
| 10-20 19:33 | 160m | +9 / - | ON6MX | -7 / -13 | 2 | Partial capture |
| 10-20 19:22 | 60m | +14 / -8 | G4DBW | +7 / 0 | 5 | ✓ Full exchange observed |
| 10-20 18:16 | 60m | 0 / -8 | HA0GZ | -3 / -21 | 5 | ✓ Full exchange observed |
| 10-20 18:14 | 60m | +7 / +5 | DM3PT | -8 / -1 | 7 | ✓ Full exchange observed |
| 10-20 18:13 | 60m | +9 / +1 | F5PZT | -4 / -2 | 4 | ✓ Full exchange observed |
| 10-20 18:13 | 60m | - / +10 | HA5UK | +8 / - | 3 | Partial capture |
| 10-20 18:08 | 60m | -2 / - | JY4CI | - / -25 | 3 | ✓ Closing fragment |
| 10-20 05:41 | 60m | - / - | DF4WQ | -18 / - | 5 | Partial capture |
| 10-20 05:39 | 60m | +2 / - | ES2AJ | - / -17 | 4 | ✓ Closing fragment |
| 10-20 05:34 | 40m | +3 / - | YS1MS | - / - | 4 | Partial capture |
| 10-20 05:30 | 40m | +6 / - | OR82CLM | - / -5 | 4 | Partial capture |
| 10-20 05:17 | 40m | +4 / - | JY5IB | - / +2 | 3 | ✓ Closing fragment |
| 10-20 05:16 | 40m | +6 / - | K8OOK | - / -18 | 3 | Partial capture |
| 10-20 05:15 | 40m | - / -7 | DK7ZT | +4 / - | 3 | Partial capture |
| 10-20 05:14 | 40m | +11 / - | TI5RR | - / -15 | 3 | ✓ Closing fragment |
| 10-19 22:22 | 60m | - / -14 | EA1FKI | -11 / - | 4 | Partial capture |
| 10-19 21:34 | 60m | -9 / - | DL6LG | - / -18 | 2 | ✓ Closing fragment |
| 10-19 21:33 | 60m | - / - | EA2EWL | -22 / - | 2 | Partial capture |
| 10-19 21:32 | 60m | -5 / - | CU3EM | - / -14 | 3 | ✓ Closing fragment |
| 10-19 21:31 | 60m | -6 / - | DL6LG | - / -16 | 2 | Partial capture |
| 10-19 21:28 | 60m | -6 / - | CU3EM | - / -18 | 3 | ✓ Closing fragment |
| 10-19 20:07 | 60m | -6 / -7 | DK5AN | -9 / -25 | 5 | ✓ Full exchange observed |
| 10-19 19:35 | 60m | -3 / +3 | SP3JHZ | -2 / -8 | 6 | ✓ Full exchange observed |
| 10-19 19:24 | 60m | - / - | EA1ENG | -18 / - | 5 | Partial capture |
| 10-19 19:22 | 60m | 0 / +7 | DL2VN | -3 / +4 | 5 | ✓ Full exchange observed |
| 10-19 17:26 | 160m | -2 / - | LZ2EV | - / - | 2 | Partial capture |
| 10-19 05:44 | 80m | - / - | F5MYK | -10 / - | 2 | Partial capture |
| 10-19 05:42 | 80m | +11 / -11 | UT5ZC | -8 / +4 | 6 | ✓ Full exchange observed |
| 10-19 05:39 | 80m | +20 / - | K5TA | - / -17 | 5 | ✓ Closing fragment |
| 10-19 05:39 | 80m | - / - | G0BLB | -3 / - | 3 | Partial capture |
| 10-19 05:38 | 80m | - / -6 | IZ2EWN | -14 / - | 3 | ✓ Closing fragment |
| 10-19 05:37 | 80m | - / - | F5MYK | -12 / - | 4 | Partial capture |
| 10-19 05:36 | 80m | +20 / - | RD9M/3 | - / -20 | 2 | Partial capture |
| 10-19 05:34 | 80m | - / - | IK4TVP | -3 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172430 -2 1257 IU2VUD S57MPU 73 172445 -23 1443 S57MPU IU5KWL/2 -07 (x2) 172530 +0 1257 OH2CUB/P S57MPU R-11 (x3) 181415 +8 885 UN8DSW S57MPU JN76 (x2) 181515 +5 885 YB2CLC S57MPU JN76 (x7)
UTC dB Audio Message 174500 +8 442 CQ S57MPU JN76 180215 +13 2298 JA1ILA S57MPU R-14 193300 +11 917 CQ S57MPU JN76 193315 -11 918 S57MPU SV2JU KN10 193315 -7 1344 S57MPU ON6MX JO11 193330 +9 917 ON6MX S57MPU -13 194245 +6 1368 JA5MHD S57MPU JN76 195300 -9 2200 S57MPU OM1AN JN88 195415 -1 1368 CQ S57MPU JN76 200115 +1 1368 HB9HFR S57MPU JN76 200315 +5 1368 DK8CX S57MPU 73 200345 +19 1368 JA5MHD S57MPU JN76 201445 -6 1283 HB9HFR S57MPU JN76 201615 -7 1283 CQ S57MPU JN76 (x2)
UTC dB Audio Message 051615 +0 2489 S57MPU DK7ZT -07 051630 +4 1479 K8OOK S57MPU -18 051645 +7 2489 S57MPU DK7ZT -07 051700 +7 1479 K8OOK S57MPU -18 051730 +3 1479 JY5IB S57MPU JN76 (x3) 053045 +6 1479 OR82CLM S57MPU JN76 (x4) 053400 +1 1479 YS1MS S57MPU JN76 (x4)
UTC dB Audio Message 053945 +16 446 K5TA S57MPU JN76 054000 -2 1876 S57MPU G0BLB IO81 054015 +20 446 K5TA S57MPU JN76 (x4) 054200 -10 979 S57MPU UT5ZC KN57 054245 +8 446 UT5ZC S57MPU +04 054300 -8 980 S57MPU UT5ZC R-11 054315 +15 446 UT5ZC S57MPU RR73 054330 -6 979 S57MPU UT5ZC 73 054330 +0 1876 S57MPU G0BLB IO81 054345 +10 446 UT5ZC S57MPU 73 054400 -7 2201 S57MPU F5MYK IN97 (x2)
UTC dB Audio Message 092045 -2 2419 S57MPU RM8L MO27 (x4) 132045 -3 904 S57MPU CR7BRV -02 (x2) 132245 -1 993 S57MPU CT2KCK IM59 (x3) 142745 -2 2733 S57MPU 4Z5AY KM72 (x2) 114600 -8 1269 S57MPU UA3AGW KO85 (x4)
UTC dB Audio Message 200030 -18 1500 CS8ABF S57MPU JN76 (x7) 200400 -9 1500 S55B S57MPU JN76 200645 -11 702 CS8ABF S57MPU JN76 (x2) 200915 -9 702 BI4JJO S57MPU RRR 201015 -16 702 BD4VOJ S57MPU -11 201745 -17 702 CQ S57MPU JN76 201830 +5 707 S57MPU G0RVY JO01 201900 -10 2022 S57MPU G3ROY IO70
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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee