ON3XSS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON3XSS, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-21.
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 6 FT8 messages attributed to ON3XSS as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 6 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -17 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 0.
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 ON3XSS in decoded directed-looking exchanges:
Most frequent locator attributed to ON3XSS
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
- JO10 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,335 km (approx.)
- Last such locator decoded
- 2026-09-21 04:08 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 | ON3XSS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 08:38 | 40m | - / - | F4BYA | -3 / - | 3 | Partial capture |
| 09-21 08:33 | 40m | - / - | F4BYA | -1 / - | 2 | Partial capture |
| 09-21 08:32 | 40m | - / -18 | DJ0MAB | -8 / - | 4 | ✓ Closing fragment |
| 09-21 08:28 | 40m | - / - | F4BYA | +1 / - | 3 | Partial capture |
| 09-21 06:01 | 40m | - / - | SP6CVB | +17 / - | 3 | Partial capture |
| 09-21 05:57 | 40m | - / -23 | ON1DGN | -16 / - | 4 | Partial capture |
| 09-21 05:48 | 40m | - / - | F1MXE | -2 / - | 2 | Partial capture |
| 09-21 05:31 | 40m | - / - | DG1ROL | +4 / - | 2 | Partial capture |
| 09-21 05:27 | 40m | - / - | DL6UCK | -6 / - | 7 | Partial capture |
| 09-21 05:15 | 40m | - / - | DL6UCK | -1 / - | 2 | Partial capture |
| 09-21 05:09 | 40m | - / -14 | IK4TVP | -8 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 060300 +3 2721 ON3XSS 9A3AUH JN75 082830 +3 2982 ON3XSS F4BYA JN19 082830 -6 710 ON3XSS DJ0MAB JN49 082900 +0 2982 ON3XSS F4BYA JN19 (x2) 083200 -11 711 ON3XSS DJ0MAB JN49 (x2) 083300 +0 2982 ON3XSS F4BYA JN19 (x2) 083430 -6 711 ON3XSS DJ0MAB R-18 (x2) 083700 -5 711 ON3XSS DG2SAT JN48 083830 -2 2982 ON3XSS F4BYA JN19 (x3)
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