IU8RIA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU8RIA, decoded by SO8OO in southeastern Poland. 45 FT8 messages attributed to this token as transmitter, on 160m, 40m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-19.
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 45 FT8 messages attributed to IU8RIA as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (64%), followed by 10 m (22%) and 40 m (13%). 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 -16 dB.
Overview
Bands
Last attributed message: 2026-09-19 19:25 UTC
Observed FT8 message patterns
- Attributed sample
- 45 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -19 to -11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 2.
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 IU8RIA in decoded directed-looking exchanges:
Most frequent locator attributed to IU8RIA
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
- JM89 · 23 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,220 km (approx.)
- Last such locator decoded
- 2026-09-19 19:24 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 | IU8RIA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 19:24 | 160m | -11 / - | HB9GNH | - / -15 | 3 | ✓ Closing fragment |
| 09-19 19:23 | 160m | -13 / +10 | S57AM | -4 / - | 3 | ✓ Closing observed |
| 09-19 19:20 | 160m | - / - | RA3WY | -4 / - | 8 | Partial capture |
| 09-19 19:20 | 160m | -14 / -17 | UA6YW | -4 / -18 | 4 | ✓ Full exchange observed |
| 09-17 18:23 | 160m | - / -4 | 9A5E | -4 / - | 2 | ✓ Closing fragment |
| 09-17 18:22 | 160m | - / -10 | OK1VKX | -6 / - | 2 | ✓ Closing fragment |
| 08-08 17:39 | 40m | -15 / - | OE3JMI | - / -16 | 2 | ✓ Closing fragment |
| 08-08 17:38 | 40m | -14 / - | EB2EMZ | - / -13 | 2 | ✓ Closing fragment |
| 08-08 17:17 | 10m | -16 / - | 4X5GE | - / -6 | 2 | Partial capture |
| 08-08 17:16 | 10m | -18 / - | DN9KK | - / -6 | 2 | ✓ Closing fragment |
| 08-08 17:08 | 10m | -18 / +4 | PD9FLX | -2 / +1 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192100 -13 2058 CQ IU8RIA JM89 192115 +0 1432 IU8RIA RA3WY KO81 (x2) 192145 -6 2058 IU8RIA R3ST LO05 192200 -4 2058 CQ IU8RIA JM89 192215 -10 1432 IU8RIA RA3WY KO81 (x2) 192315 -13 2058 S57AM IU8RIA JM89 192315 -8 1432 IU8RIA RA3WY KO81 192330 -5 1950 IU8RIA S57AM +10 192345 -5 1432 IU8RIA RA3WY KO81 192400 -2 1950 IU8RIA S57AM RR73 192445 -10 2058 HB9GNH IU8RIA JM89 (x3)
UTC dB Audio Message 173730 -17 2099 CQ IU8RIA JM89 173800 -15 2098 EB2EMZ IU8RIA -13 (x2) 173900 -15 2098 R4FDQ IU8RIA R-16 173930 -16 2099 OE3JMI IU8RIA -16 (x2)
UTC dB Audio Message 170830 -18 2144 CQ IU8RIA JM89 170845 -2 2331 IU8RIA PD9FLX JO22 170900 -21 2145 PD9FLX IU8RIA +01 170915 -3 2331 IU8RIA PD9FLX R+04 170930 -14 2145 PD9FLX IU8RIA RR73 171100 -18 2144 DN9BLN IU8RIA -14 171300 -17 2145 K8EAB IU8RIA RR73 171600 -21 2145 DN9EM IU8RIA RR73 171630 -18 2145 DN9KK IU8RIA -06 (x2) 171730 -15 2145 4X5GE IU8RIA -06 (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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