YO9RAO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YO9RAO, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-10.
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 15 FT8 messages attributed to YO9RAO as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (7%). In this small sample, the estimated median decoder S/N was -6 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-10 18:44 UTC
Observed FT8 message patterns
- Attributed sample
- 15 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -6 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 11.
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 YO9RAO in decoded directed-looking exchanges:
Most frequent locator attributed to YO9RAO
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
- KN35 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 628 km (approx.)
- Last such locator decoded
- 2026-09-10 18:44 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 | YO9RAO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-10 18:50 | 40m | - / - | UI6O | -12 / - | 4 | Partial capture |
| 09-10 18:44 | 40m | -7 / -2 | R73SLET | -2 / - | 3 | Partial capture |
| 08-10 11:46 | 20m | - / -21 | EB3JT | -7 / - | 9 | Partial capture |
| 08-10 11:45 | 20m | - / -4 | GJ0KYZ | -12 / - | 2 | ✓ Closing fragment |
| 08-10 11:42 | 20m | - / +7 | IK4LZH | +5 / - | 2 | ✓ Closing fragment |
| 08-10 11:15 | 20m | - / -12 | DK5CW | -14 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 184445 -7 616 R73SLET YO9RAO KN35 184530 -5 616 YO9RAO R73SLET -02 (x2) 184700 -3 1029 YO9RAO UI6O RRR (x5)
UTC dB Audio Message 114315 +3 462 YO9RAO IK4LZH RR73 114545 -12 994 YO9RAO GJ0KYZ -04 (x2) 114645 -11 993 YO9RAO EB3JT JN01 (x9) 190330 -16 897 YO9RAO R3UAX RR73 192415 +0 2259 CN8NS YO9RAO R-13 192430 -1 2257 YO9RAO RR73; LA2HFA <...> -16
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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