F1USO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F1USO, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-27 and 2026-08-12.
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 22 FT8 messages attributed to F1USO 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 (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (77%); the estimated median was -17 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 22 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -21 to -14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 5, 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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with F1USO in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to F1USO
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
- JN19 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,348 km (approx.)
- Last such locator decoded
- 2026-08-12 16:36 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 | F1USO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-14 14:54 | 20m | - / - | EA3GXK | -14 / - | 10 | Partial capture |
| 08-12 16:34 | 20m | - / -9 | BI4XDT | -8 / - | 4 | ✓ Closing fragment |
| 08-12 16:30 | 20m | - / - | S57FF | -10 / - | 2 | Partial capture |
| 08-09 16:55 | 20m | -20 / -16 | RN6MA | -11 / - | 4 | ✓ Closing observed |
| 08-09 16:52 | 20m | - / - | DK3TNA | -19 / - | 2 | Partial capture |
| 08-09 16:49 | 20m | -15 / -9 | UT4QM | -12 / - | 4 | ✓ Closing observed |
| 08-09 16:47 | 20m | -17 / - | DK3TNA | -24 / -9 | 3 | Partial capture |
| 07-12 16:14 | 20m | - / - | OE1NHU | -18 / - | 2 | Partial capture |
| 07-12 16:10 | 20m | - / - | OZ1CJT | -13 / - | 2 | Partial capture |
| 07-12 16:09 | 20m | - / - | UA1WA | -7 / - | 2 | Partial capture |
| 07-12 16:06 | 20m | - / -8 | UA6YW | -10 / - | 5 | Partial capture |
| 07-12 16:04 | 20m | - / -13 | EB3JT | +8 / - | 5 | ✓ Closing fragment |
| 06-27 16:12 | 20m | - / - | DL1UDO | -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 163445 -8 920 F1USO BI4XDT R-09 (x3) 163630 -17 1051 CQ F1USO JN19 163730 -17 1052 IK4LZH F1USO +03 145415 -17 1191 F1USO EA3GXK IM98 (x10)
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee