YL3OO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YL3OO, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-19 and 2026-08-24.
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 5 FT8 messages attributed to YL3OO as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (20%). In this small sample, the estimated median decoder S/N was -2 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-24 18:55 UTC
Observed FT8 message patterns
- Attributed sample
- 5 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -2 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) 0, strong (≥ -8 dB) 4.
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 YL3OO in decoded directed-looking exchanges:
Most frequent locator attributed to YL3OO
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
- KO27
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 867 km (approx.)
- Last such locator decoded
- 2026-08-19 21:07 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 | YL3OO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-24 22:57 | 80m | - / - | DL5KMR | -19 / - | 8 | Partial capture |
| 08-24 18:53 | 80m | - / - | UA4FKT | -4 / - | 2 | Partial capture |
| 08-24 18:53 | 80m | -2 / - | IQ4JO | -10 / +4 | 3 | ✓ Closing observed |
| 08-24 18:52 | 80m | +2 / -1 | HF5A | +10 / +10 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 185345 -3 1236 YL3OO UA4FKT LO23 185345 -10 2160 YL3OO IQ4JO 73 185415 -4 1237 YL3OO UA4FKT LO23 185430 +1 1236 HF5A YL3OO +10 (x2) 185515 +11 2584 YL3OO HF5A R-01 (x2) 225700 -19 2116 YL3OO DL5KMR JO44 (x8)
UTC dB Audio Message 210745 -17 1757 <...> YL3OO KO27
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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