YB9HIU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YB9HIU, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-06-19.
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 49 FT8 messages attributed to YB9HIU as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (92%); the estimated median was -18 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 49 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -18 dB
- Estimated 10th-90th percentile
- -23 to -16 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 4, 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.
Most frequent locator attributed to YB9HIU
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
- OI81 · 33 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 11,102 km (approx.)
- Last such locator decoded
- 2026-06-19 17:10 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 | YB9HIU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-16 18:35 | 20m | - / - | DG5PI | -1 / - | 2 | Partial capture |
| 08-16 18:35 | 20m | - / - | DL70ESSEN | -12 / - | 5 | Partial capture |
| 08-16 18:31 | 20m | - / - | CR5VP | -14 / - | 2 | Partial capture |
| 08-16 17:57 | 20m | - / -13 | IW4DNI | -7 / - | 2 | Partial capture |
| 08-16 17:57 | 20m | - / - | OM2WW | -7 / - | 3 | Partial capture |
| 08-16 16:47 | 20m | - / -25 | F4MSA | -6 / - | 2 | Partial capture |
| 08-16 16:46 | 20m | - / -12 | EA7AZH | -17 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175700 -10 1262 YB9HIU OM2WW JN88 175730 -8 2116 YB9HIU IW4DNI JN44 175800 -3 1262 YB9HIU OM2WW JN88 (x2) 175830 -6 2117 YB9HIU IW4DNI R-13 180800 -5 2764 YB9HIU EA1KCN IN53 183130 -12 1268 YB9HIU CR5VP IM59 (x2) 183500 -12 1267 <YB9HIU> DL70ESSEN 183500 +0 2075 YB9HIU DG5PI JN49 183530 -13 1267 <YB9HIU> DL70ESSEN 183530 -2 2075 YB9HIU DG5PI JN49 183630 -13 1267 YB9HIU DL70ESSEN (x3)
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