OZ1JKU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OZ1JKU, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-20 and 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 37 FT8 messages attributed to OZ1JKU 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 -8 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 37 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -18 to +3 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 19.
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 OZ1JKU in decoded directed-looking exchanges:
Most frequent locator attributed to OZ1JKU
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
- JO55 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 953 km (approx.)
- Last such locator decoded
- 2026-09-21 05:13 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 | OZ1JKU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 05:55 | 40m | - / - | EU6KA | -10 / - | 4 | Partial capture |
| 09-21 05:53 | 40m | -5 / - | CN8NS | - / -11 | 7 | Partial capture |
| 09-21 05:17 | 40m | -8 / - | VA7QI | - / -10 | 2 | ✓ Closing fragment |
| 09-21 05:16 | 40m | -2 / - | UR9QQ | -2 / -12 | 9 | Partial capture |
| 09-21 05:16 | 40m | -6 / -5 | YO6LM | +11 / 0 | 5 | ✓ Full exchange observed |
| 09-21 05:15 | 40m | +1 / - | DJ0MAB | -7 / -14 | 4 | ✓ Closing observed |
| 09-21 05:14 | 40m | 0 / - | UX7QV | - / -11 | 2 | ✓ Closing fragment |
| 09-21 05:13 | 40m | 0 / - | IZ4AIF | -1 / -11 | 2 | Partial capture |
| 09-21 05:12 | 40m | -8 / - | ZL1OGX | - / -13 | 2 | ✓ Closing fragment |
| 09-20 13:47 | 40m | -15 / - | F6FHZ | - / 0 | 2 | Partial capture |
| 09-20 13:46 | 40m | -16 / -6 | DL9KM | -5 / -1 | 5 | ✓ Full exchange observed |
| 09-20 13:44 | 40m | -15 / -24 | RZ4FWA | -19 / -9 | 6 | ✓ Full exchange observed |
| 09-20 13:43 | 40m | -16 / - | G6ZRV | - / +5 | 2 | ✓ Closing fragment |
| 09-20 13:40 | 40m | -18 / - | MI5JYK | - / -11 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 051900 -1 2126 UR9QQ OZ1JKU -12 (x4) 055345 +1 839 CN8NS OZ1JKU -11 (x3) 055500 -10 1679 OZ1JKU EU6KA KO55 (x2) 055545 -3 2084 CN8NS OZ1JKU -08 055600 -9 1679 OZ1JKU EU6KA KO55 055615 -8 2084 CN8NS OZ1JKU -02 055630 -9 1679 OZ1JKU EU6KA KO55 055645 -3 2084 CN8NS OZ1JKU -02 (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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