IU8RIO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU8RIO, decoded by SO8OO in southeastern Poland. 31 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-17.
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 31 FT8 messages attributed to IU8RIO as the transmitting token by decoded message structure across 1 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 -6 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 31 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -15 to +8 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 10, 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 IU8RIO in decoded directed-looking exchanges:
Most frequent locator attributed to IU8RIO
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
- JM78 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,381 km (approx.)
- Last such locator decoded
- 2026-09-17 05:01 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 | IU8RIO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-17 05:00 | 40m | +4 / - | VA6WWW | - / - | 2 | Partial capture |
| 09-17 04:58 | 40m | +8 / - | VA7QI | - / -11 | 4 | ✓ Closing fragment |
| 09-17 04:56 | 40m | - / - | DK7ZT | +1 / - | 3 | Partial capture |
| 09-17 04:56 | 40m | - / - | F5RRS | -10 / - | 2 | Partial capture |
| 09-17 04:52 | 40m | -3 / - | TJ1GD | - / -18 | 9 | ✓ Closing fragment |
| 09-17 04:47 | 40m | -14 / - | P43RR | - / -10 | 2 | ✓ Closing fragment |
| 09-17 04:45 | 40m | -13 / -5 | CN8NS | -14 / -9 | 5 | ✓ Full exchange observed |
| 09-17 04:40 | 40m | - / - | YO6LM | +3 / - | 3 | Partial capture |
| 09-17 04:39 | 40m | -10 / - | 9A4ZM | - / -1 | 2 | ✓ Closing fragment |
| 09-17 04:39 | 40m | -6 / +3 | IK4TVP | -7 / -11 | 5 | ✓ Full exchange observed |
| 09-17 04:38 | 40m | -14 / - | EA5D | - / -9 | 2 | ✓ Closing fragment |
| 09-17 04:37 | 40m | -6 / - | LZ2VQ | - / -11 | 2 | ✓ Closing fragment |
| 09-17 04:36 | 40m | - / - | DJ0MAB | +3 / - | 3 | Partial capture |
| 09-17 04:36 | 40m | - / - | PE1NPS | -5 / - | 2 | Partial capture |
| 09-17 04:35 | 40m | -9 / 0 | SV1DKR | -2 / -4 | 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 045445 -2 875 TJ1GD IU8RIO JM78 (x4) 045630 -14 1976 IU8RIO F5RRS JN36 045630 -3 1906 IU8RIO DK7ZT +17 045700 -7 1976 IU8RIO F5RRS JN36 045700 +6 1906 IU8RIO DK7ZT +17 (x2) 045830 +8 719 VA7QI IU8RIO JM78 (x4) 050030 +8 658 VA6WWW IU8RIO JM78 (x2)
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