ON8JJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON8JJ, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-13 and 2026-09-19.
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 22 FT8 messages attributed to ON8JJ as the transmitting token by decoded message structure across 2 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 -9 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 22 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -15 to -5 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 9.
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 ON8JJ in decoded directed-looking exchanges:
Most frequent locator attributed to ON8JJ
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
- JO21 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-09-19 08:50 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 | ON8JJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 09:00 | 40m | -7 / -1 | DJ0MAB | -10 / -2 | 4 | ✓ Full exchange observed |
| 09-19 09:00 | 40m | - / - | DL9KM | -5 / - | 7 | Partial capture |
| 09-19 08:55 | 40m | - / - | DJ0MAB | -15 / - | 2 | Partial capture |
| 09-19 08:43 | 40m | -10 / - | G8CYM | - / - | 3 | Partial capture |
| 09-13 18:58 | 40m | - / -13 | R2PT | +1 / - | 2 | ✓ Closing fragment |
| 09-13 18:56 | 40m | - / -9 | US2YW | -18 / - | 2 | Partial capture |
| 09-13 18:55 | 40m | - / - | DL9KM | -3 / - | 7 | Partial capture |
| 09-13 18:49 | 40m | - / +5 | F6BHK | -2 / - | 3 | ✓ Closing fragment |
| 09-13 18:33 | 40m | -12 / - | EA4LL | - / -17 | 4 | ✓ Closing fragment |
| 09-13 18:32 | 40m | -16 / - | EA4RKC | - / -11 | 2 | ✓ Closing fragment |
| 09-13 18:25 | 40m | - / - | US2YW | +15 / - | 3 | Partial capture |
| 09-13 18:20 | 40m | -7 / - | F6BHK | - / -7 | 2 | Partial capture |
| 09-13 18:19 | 40m | -3 / - | IN3LHF | +2 / -9 | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 085415 -10 730 IQ0AAI ON8JJ 73 085500 -16 1230 ON8JJ DJ0MAB JN49 (x2) 085815 -7 331 EA1AUM ON8JJ 73 090000 -6 1699 ON8JJ DL9KM JN68 (x2) 090045 -7 331 DJ0MAB ON8JJ -02 090100 -2 1698 ON8JJ DL9KM JN68 090100 -9 331 ON8JJ DJ0MAB JN49 090130 -5 1698 ON8JJ DL9KM JN68 090130 -11 331 ON8JJ DJ0MAB R-01 090200 -3 1698 ON8JJ DL9KM JN68 090200 -9 331 ON8JJ DJ0MAB 73 090230 -6 1698 ON8JJ DL9KM JN68 (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.
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