S51PU — 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 S51PU, decoded by SO8OO in southeastern Poland. 557 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-10-30.
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 557 FT8 messages attributed to S51PU as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (41%), followed by 10 m (33%) and 20 m (14%). Most decodes (69%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (96%); the estimated median was +5 dB.
Overview
Bands
Last attributed message: 2026-10-30 20:37 UTC
Observed FT8 message patterns
- Attributed sample
- 557 messages
- Active dates
- 23 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -5 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 537.
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 S51PU 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 S51PU
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 · 404 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 631 km (approx.)
- Last such locator decoded
- 2026-10-30 20:34 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 | S51PU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 20:38 | 160m | - / +1 | 4O7CC | 0 / - | 2 | ✓ Closing fragment |
| 10-30 20:33 | 160m | -4 / - | RD1A/P | - / - | 3 | Partial capture |
| 10-25 16:07 | 80m | +2 / -13 | RA2FU | -5 / -7 | 5 | ✓ Full exchange observed |
| 10-25 16:05 | 80m | +8 / - | UA0YDB | - / -15 | 3 | ✓ Closing fragment |
| 10-25 16:00 | 80m | +9 / - | UN0GY | - / -13 | 3 | ✓ Closing fragment |
| 10-25 15:51 | 160m | -6 / - | RA9YTI | - / - | 2 | Partial capture |
| 10-24 16:41 | 40m | -16 / - | A41KB | - / -7 | 3 | ✓ Closing fragment |
| 10-23 23:36 | 80m | -9 / -15 | EI4JFB | -5 / -17 | 5 | ✓ Full exchange observed |
| 10-23 23:27 | 80m | +2 / -5 | UT3UZ | +5 / - | 3 | ✓ Closing observed |
| 10-23 23:26 | 80m | -2 / +6 | UA4FKT | -1 / -6 | 5 | ✓ Full exchange observed |
| 10-23 23:25 | 80m | 0 / - | DL4DP | -12 / -20 | 3 | ✓ Closing observed |
| 10-23 23:23 | 80m | 0 / - | UA9JTJ/4 | - / -5 | 3 | Partial capture |
| 10-23 23:21 | 80m | -5 / - | OD5ZZ | - / -19 | 4 | ✓ Closing fragment |
| 10-23 22:58 | 160m | +6 / 0 | US2YW | +4 / -10 | 3 | ✓ Full exchange observed |
| 10-23 22:58 | 160m | +7 / +1 | OK1WCF | +11 / -6 | 6 | ✓ Full exchange observed |
| 10-23 22:56 | 160m | +2 / - | Z35Z | - / -1 | 2 | Partial capture |
| 10-23 22:50 | 80m | +5 / - | OD5ZZ | - / - | 3 | Partial capture |
| 10-23 22:46 | 80m | +4 / -13 | UN0GY | -10 / -7 | 7 | ✓ Full exchange observed |
| 10-23 22:34 | 40m | - / 0 | TA2ED | -8 / - | 2 | ✓ Closing fragment |
| 10-23 21:02 | 160m | +4 / - | 9K2HS | - / -6 | 2 | ✓ Closing fragment |
| 10-23 21:00 | 160m | +2 / -13 | DK8PR | -8 / -9 | 10 | ✓ Full exchange observed |
| 10-23 20:57 | 160m | - / -12 | UA4CKN | -16 / - | 2 | ✓ Closing fragment |
| 10-23 20:56 | 160m | +7 / - | VK6IR | - / -23 | 2 | ✓ Closing fragment |
| 10-23 18:42 | 160m | +8 / - | HB9HFN | - / - | 2 | Partial capture |
| 10-23 18:40 | 160m | +10 / -8 | SQ3LMR | +1 / -9 | 5 | ✓ Full exchange observed |
| 10-23 18:39 | 160m | - / - | RA4Y | -8 / - | 2 | Partial capture |
| 10-23 18:38 | 160m | +11 / - | 4L7T | - / -20 | 5 | ✓ Closing fragment |
| 10-23 18:37 | 160m | +11 / - | G4RGK | - / -4 | 3 | ✓ Closing fragment |
| 10-23 18:35 | 160m | +9 / - | MW7GQB | - / -2 | 3 | ✓ Closing fragment |
| 10-23 18:31 | 160m | +6 / 0 | DL7MDX | -9 / +2 | 9 | ✓ Full exchange observed |
| 10-23 18:31 | 160m | +11 / - | 4L7T | - / - | 5 | Partial capture |
| 10-23 18:31 | 160m | - / -10 | SQ3LMR | -2 / - | 3 | Partial capture |
| 10-23 18:30 | 160m | +6 / - | OZ2LP | - / -16 | 3 | ✓ Closing fragment |
| 10-23 18:25 | 160m | +6 / - | UN0GY | - / -8 | 6 | ✓ Closing fragment |
| 09-23 20:28 | 80m | +1 / - | TF4M | - / - | 3 | Partial capture |
| 09-23 20:23 | 80m | 0 / - | CN8WK | - / - | 3 | Partial capture |
| 09-22 19:57 | 80m | +8 / - | C31KC | - / - | 12 | Partial capture |
| 09-21 21:59 | 80m | +9 / -18 | GW4HZA | 0 / -10 | 13 | ✓ Full exchange observed |
| 09-19 22:46 | 80m | +22 / - | RI1FJZ | - / -9 | 2 | Partial capture |
| 09-19 21:54 | 160m | +4 / - | RI1FJZ | - / - | 2 | Partial capture |
| 09-04 20:18 | 40m | +6 / - | EX7CQ | - / - | 4 | Partial capture |
| 09-02 01:28 | 80m | +9 / - | TF4M | - / - | 5 | Partial capture |
| 09-02 01:23 | 40m | +5 / - | TN8GD | - / - | 5 | Partial capture |
| 09-02 01:12 | 80m | +3 / - | TF4M | - / - | 9 | Partial capture |
| 09-02 01:05 | 80m | +2 / - | TF4M | - / - | 10 | Partial capture |
| 08-30 10:37 | 20m | - / - | HB9IIH | -1 / - | 2 | Partial capture |
| 08-29 21:57 | 80m | +1 / - | UN8DSW | - / - | 6 | Partial capture |
| 08-29 20:49 | 80m | -6 / - | EI4JFB | - / - | 7 | Partial capture |
| 08-29 19:22 | 20m | +2 / - | Z62NS | - / - | 8 | Partial capture |
| 08-28 23:24 | 80m | +8 / - | JY4CI | - / -21 | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200130 +2 1103 S51PU G0IUS JO01
UTC dB Audio Message 225900 +13 1331 S51PU OK1WCF JO80 225915 +3 1330 OK1WCF S51PU -06 225930 +9 1331 S51PU OK1WCF R+01 225945 +11 1330 OK1WCF S51PU RR73 230000 +11 1330 S51PU OK1WCF 73 155100 -4 1828 RA9YTI S51PU JN76 (x2) 203315 -1 2197 RD1A/P S51PU JN76 (x3) 203700 -6 607 S51PU 6W/IK2HKT -12 203715 +2 2197 RD1A/P S51PU R-05 203730 -10 607 S51PU RR73; SP3FAR <...> -12 203800 -3 804 S51PU 4O7CC +01 (x2)
UTC dB Audio Message 233715 -3 738 S51PU EI4JFB RR73 233730 -8 200 EI4JFB S51PU 73 155900 +11 2064 RA2FU S51PU JN76 160000 +9 2064 UN0GY S51PU JN76 (x3) 160245 +3 2064 UA0YDB S51PU JN76 (x4) 160745 +4 1909 RA2FU S51PU JN76 160800 -5 1910 S51PU RA2FU -13 160815 -1 1909 RA2FU S51PU R-07 160830 -5 1910 S51PU RA2FU 73 160845 +4 1909 RA2FU S51PU 73
UTC dB Audio Message 012445 -4 2915 TN8GD S51PU JN76 (x3) 201445 +4 2644 EX7CQ S51PU JN76 (x5) 223430 -7 505 S51PU TA2ED +00 223430 +5 555 S51PU F5PBG IN78 223500 -20 1131 S51PU UN7PPV -14 223500 -10 505 S51PU TA2ED RR73 164115 -18 1813 A41KB S51PU JN76 (x3)
UTC dB Audio Message 140730 -12 700 S51PU RR73; SQ5N <...> -12
UTC dB Audio Message 221345 +3 2755 Z62NS S51PU JN76 (x13) 103745 +0 2353 S51PU HB9IIH R JN36 (x2)
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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