SP4JEU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP4JEU, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-09-01.
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 38 FT8 messages attributed to SP4JEU as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (84%), followed by 40 m (16%). Several six-hour UTC windows tied for the largest share (74%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-09-01 18:35 UTC
Observed FT8 message patterns
- Attributed sample
- 38 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -13 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 31.
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 SP4JEU in decoded directed-looking exchanges:
Most frequent locator attributed to SP4JEU
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 · 22 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 440 km (approx.)
- Last such locator decoded
- 2026-09-01 18:35 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 | SP4JEU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-01 18:39 | 40m | - / -3 | UA4FEN | +3 / - | 5 | ✓ Closing fragment |
| 09-01 18:34 | 40m | -4 / - | VJ6X | - / - | 3 | Partial capture |
| 08-02 10:36 | 10m | - / -10 | D2ACE | 0 / - | 2 | ✓ Closing fragment |
| 07-19 18:11 | 20m | -6 / - | BG7BMG | - / -13 | 3 | ✓ Closing fragment |
| 07-18 17:07 | 20m | - / - | R2AL | -3 / - | 4 | Partial capture |
| 07-17 12:38 | 20m | -7 / - | DF9ML | - / -8 | 3 | ✓ Closing fragment |
| 07-17 12:36 | 20m | -6 / - | PA7FB | - / -10 | 2 | ✓ Closing fragment |
| 07-17 12:30 | 20m | -1 / - | 9M8DEN | - / - | 9 | Partial capture |
| 07-17 12:25 | 20m | -3 / - | TN8GD | - / -13 | 8 | ✓ Closing fragment |
| 07-17 12:20 | 20m | +1 / +6 | PE9JAN | -6 / - | 5 | ✓ Closing observed |
| 07-17 12:18 | 20m | -6 / - | TF3AK | - / -12 | 4 | ✓ Closing fragment |
| 07-16 15:26 | 20m | - / -7 | 7X3WPL | -16 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 181530 -15 2077 CQ DX SP4JEU JO93 (x3) 181715 -19 2077 SP4JEU RC3LD KO63 183415 -6 2747 VJ6X SP4JEU JO93 (x3) 183915 +2 2152 SP4JEU UA4FEN -03 (x5)
UTC dB Audio Message 103645 +1 2396 SP4JEU D2ACE -10 (x2)
UTC dB Audio Message 123400 -1 496 9M8DEN SP4JEU JO93 (x2) 123630 -5 2418 PA7FB SP4JEU -10 (x2) 123830 -13 1539 DF9ML SP4JEU -08 (x3) 170715 +1 1432 SP4JEU R2AL KO85 (x4) 181115 -4 2265 BG7BMG SP4JEU JO93 (x3) 181315 -9 2259 SP6AXW SP4JEU +08
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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