SP9WUJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP9WUJ, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-03 and 2026-08-25.
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 17 FT8 messages attributed to SP9WUJ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (76%), followed by 160 m (12%) and 80 m (12%). In this small sample, the estimated median decoder S/N was 0 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-25 20:32 UTC
Observed FT8 message patterns
- Attributed sample
- 17 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- 0 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 13.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with SP9WUJ in decoded directed-looking exchanges:
Most frequent locator attributed to SP9WUJ
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
- KO02 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 290 km (approx.)
- Last such locator decoded
- 2026-07-04 19:25 UTC
Other locator fields attributed to this token: JO90 (1).
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 | SP9WUJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-25 20:32 | 80m | -16 / -13 | DK8UU | -20 / -13 | 4 | ✓ Full exchange observed |
| 07-05 09:36 | 10m | - / -1 | F4FSY | -12 / - | 4 | ✓ Closing fragment |
| 07-04 19:24 | 160m | -14 / - | LZ1IPN | - / - | 2 | Partial capture |
| 07-03 19:34 | 60m | - / - | PE1NPS | -11 / - | 4 | Partial capture |
| 07-03 19:33 | 60m | +2 / -4 | 9A4ZM | +7 / -8 | 5 | ✓ Full exchange observed |
| 07-03 19:31 | 60m | +4 / -7 | HA5DI | -19 / -11 | 6 | ✓ Full exchange observed |
| 07-03 19:31 | 60m | 0 / - | SP9RM | +4 / 0 | 7 | ✓ Closing observed |
| 07-03 19:30 | 60m | +1 / -2 | SM4TIW | -8 / -1 | 5 | ✓ Full exchange observed |
| 07-03 19:28 | 60m | -5 / - | ER1KW | -15 / -3 | 4 | ✓ Closing observed |
| 07-02 10:51 | 10m | - / - | RW6HP | -15 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 203200 -10 1709 DK8UU SP9WUJ JO90 203215 -19 1710 SP9WUJ DK8UU -13 203230 -21 1709 DK8UU SP9WUJ R-13 203245 -21 1710 SP9WUJ DK8UU RR73
UTC dB Audio Message 161200 -20 1184 SP9WUJ EG5HSV RR73 073615 +0 463 SP9WUJ IK4LZH RR73 162945 +0 2743 SP9WUJ JR5XPG -20
UTC dB Audio Message 105100 -14 1656 SP9WUJ RW6HP LN14 (x2) 093645 -15 1633 SP9WUJ F4FSY -01 (x4) 161200 -16 2300 SP9WUJ PD9FLX JO22 161230 -19 1393 SP9WUJ ON4MGV RR73
UTC dB Audio Message 192445 -12 1570 LZ1IPN SP9WUJ KO02 (x2)
UTC dB Audio Message 193300 +0 2047 SP9WUJ SP9RM JO90 193300 -18 1404 SP9WUJ HA5DI 73 193300 +10 740 SP9WUJ 9A4ZM JN86 193315 +2 744 9A4ZM SP9WUJ -08 193330 +7 740 SP9WUJ 9A4ZM R-04 193345 +2 744 9A4ZM SP9WUJ RR73 193400 +7 2047 SP9WUJ SP9RM JO90 193400 -12 2330 SP9WUJ PE1NPS JO22 193400 +4 740 SP9WUJ 9A4ZM 73 193430 +12 743 SP9WUJ SP9RM JO90 193430 -11 2330 SP9WUJ PE1NPS JO22 193445 +0 743 SP9RM SP9WUJ +00 193500 -13 2330 SP9WUJ PE1NPS JO22 193515 +1 744 SP9RM SP9WUJ RR73 193530 -8 2330 SP9WUJ PE1NPS JO22
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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