SP4OIU — 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 SP4OIU, decoded by SO8OO in southeastern Poland. 74 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-11.
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 74 FT8 messages attributed to SP4OIU as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (74%), followed by 40 m (26%). Most decodes (99%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.
Overview
Bands
Last attributed message: 2026-10-11 10:19 UTC
Observed FT8 message patterns
- Attributed sample
- 74 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -17 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 33.
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 SP4OIU in decoded directed-looking exchanges:
Most frequent locator attributed to SP4OIU
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
- JO93 · 54 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 440 km (approx.)
- Last such locator decoded
- 2026-10-11 10:19 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 | SP4OIU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 10:19 | 40m | -17 / - | SN0EG | -13 / - | 2 | Partial capture |
| 10-11 10:15 | 40m | - / +4 | YL3GAO | -6 / - | 3 | ✓ Closing fragment |
| 09-10 16:30 | 40m | - / -5 | F6BEC | -7 / - | 3 | ✓ Closing fragment |
| 09-10 16:26 | 40m | - / +1 | DH0GBC | 0 / - | 3 | Partial capture |
| 09-10 16:23 | 40m | - / - | F6BEC | -2 / - | 3 | Partial capture |
| 09-10 16:22 | 40m | - / -7 | R5AV | -11 / - | 2 | ✓ Closing fragment |
| 09-10 16:14 | 40m | - / -5 | RN6MA | +1 / - | 4 | Partial capture |
| 09-10 16:12 | 40m | - / -14 | DK5EO | -16 / - | 2 | ✓ Closing fragment |
| 09-01 11:17 | 40m | -16 / - | HB9HYO | - / - | 4 | Partial capture |
| 09-01 11:12 | 40m | -15 / - | PE9JAN | - / - | 5 | ✓ Closing fragment |
| 08-25 16:26 | 40m | -6 / -8 | LA5AKA/P | -4 / -15 | 4 | ✓ Full exchange observed |
| 08-21 16:31 | 20m | - / -17 | EX7CQ | -18 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 162345 +0 1364 SP4OIU F6BEC JN38 (x2) 162615 +2 1397 SP4OIU DH0GBC +01 (x3) 162815 -4 1438 SP4OIU DL1SRS R+02 163015 -10 1438 SP4OIU F6BEC -05 (x3) 163515 -2 2076 SP4OIU RA4HG -14 101515 -7 1439 SP4OIU YL3GAO KO16 (x3) 101915 -17 1438 SN0EG SP4OIU JO93 102100 -13 1585 SP4OIU SN0EG JO73
UTC dB Audio Message 054115 -24 1688 SP4OIU IS0KNG -11 163100 -19 1764 SP4OIU EX7CQ -17 (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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