F5LNU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F5LNU, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-16.
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 26 FT8 messages attributed to F5LNU as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (77%), followed by 20 m (23%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.
Overview
Bands
Last attributed message: 2026-09-16 10:11 UTC
Observed FT8 message patterns
- Attributed sample
- 26 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -15 dB
- Estimated 10th-90th percentile
- -21 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 7.
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 F5LNU in decoded directed-looking exchanges:
Most frequent locator attributed to F5LNU
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
- JN04 · 20 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,676 km (approx.)
- Last such locator decoded
- 2026-09-16 10:10 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 | F5LNU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 10:11 | 10m | -13 / - | A41ZZ | - / -20 | 2 | Partial capture |
| 09-02 09:28 | 10m | -14 / - | VK4XA | - / +4 | 2 | ✓ Closing fragment |
| 09-02 09:25 | 10m | -19 / - | DV4ZAR | - / - | 13 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 092715 -20 1341 DV4ZAR F5LNU JN04 (x2) 092815 -12 1390 VK4XA F5LNU +04 (x2) 092945 -23 1390 DV4ZAR F5LNU JN04 (x7) 100945 -11 1386 CQ F5LNU JN04 (x2) 101115 -11 1386 A41ZZ F5LNU R-20 (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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