US0UB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving US0UB, decoded by SO8OO in southeastern Poland. 430 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-31.
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 430 FT8 messages attributed to US0UB as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 40 m (3%). Most decodes (94%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-08-31 21:44 UTC
Observed FT8 message patterns
- Attributed sample
- 430 messages
- Active dates
- 23 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -16 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 110, strong (≥ -8 dB) 273.
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 US0UB 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 US0UB
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
- KO50 · 304 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 658 km (approx.)
- Last such locator decoded
- 2026-08-31 21:40 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 | US0UB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-01 22:17 | 40m | - / -14 | DL3MIB | +8 / - | 4 | ✓ Closing fragment |
| 09-01 21:32 | 40m | - / -19 | YT2FA | -14 / - | 2 | ✓ Closing fragment |
| 08-31 21:40 | 40m | -22 / - | OM1AGE | - / -22 | 3 | Partial capture |
| 08-31 20:43 | 40m | -16 / - | PY5QW | - / -26 | 2 | Partial capture |
| 08-31 20:24 | 40m | +1 / - | RI1FJL | - / - | 2 | Partial capture |
| 08-31 20:22 | 40m | +2 / - | SQ9SET | - / - | 2 | Partial capture |
| 08-29 21:05 | 20m | - / -12 | 7Z1BQ | -10 / - | 2 | ✓ Closing fragment |
| 08-29 21:00 | 20m | - / - | EA7HA | -11 / - | 5 | Partial capture |
| 08-29 20:50 | 20m | - / -13 | PP7GB | -10 / - | 2 | ✓ Closing fragment |
| 08-29 14:28 | 20m | - / - | SV1TRJ | -20 / - | 2 | ✓ Closing fragment |
| 08-28 22:35 | 20m | - / -16 | K1RI | -2 / - | 2 | Partial capture |
| 08-28 22:29 | 20m | - / -15 | N3NT | -3 / - | 3 | ✓ Closing fragment |
| 08-28 21:25 | 20m | -19 / - | PY5QW | - / - | 2 | Partial capture |
| 08-27 18:31 | 40m | -9 / - | SQ8V | - / - | 2 | Partial capture |
| 08-25 17:23 | 20m | - / -5 | F4HTA | +14 / - | 2 | ✓ Closing fragment |
| 08-25 16:57 | 20m | - / -3 | ON2AJ | +5 / - | 3 | ✓ Closing fragment |
| 08-25 16:19 | 20m | - / -7 | F1THK | +1 / - | 2 | ✓ Closing fragment |
| 08-19 20:10 | 20m | - / 0 | F1PBZ | +4 / - | 3 | Partial capture |
| 08-19 20:05 | 20m | - / -11 | W3GQ | -20 / - | 2 | ✓ Closing fragment |
| 08-17 17:49 | 20m | -3 / - | HZ1OL | - / -22 | 3 | ✓ Closing fragment |
| 08-17 17:47 | 20m | -21 / - | PD3WMA | - / - | 2 | Partial capture |
| 08-17 17:42 | 20m | - / -6 | YO4LUP | -8 / - | 3 | ✓ Closing fragment |
| 08-16 21:53 | 20m | +2 / - | W5DAH | - / -26 | 9 | Partial capture |
| 08-16 21:50 | 20m | +4 / - | K2PSD | - / - | 7 | Partial capture |
| 08-16 21:46 | 20m | +3 / - | N1JUD | - / - | 3 | Partial capture |
| 08-16 21:43 | 20m | +6 / - | VA3TBW | - / -14 | 6 | ✓ Closing fragment |
| 08-16 21:40 | 20m | 0 / - | BH4ECL | - / -22 | 4 | ✓ Closing fragment |
| 08-16 21:37 | 20m | +2 / -3 | II3DRC | -13 / -23 | 6 | Partial capture |
| 08-16 21:35 | 20m | +11 / - | VE9JMC | - / -23 | 3 | ✓ Closing fragment |
| 08-16 21:33 | 20m | - / - | II3DRC | -15 / - | 2 | Partial capture |
| 08-16 21:32 | 20m | +4 / - | K2PSD | - / - | 5 | Partial capture |
| 08-16 21:30 | 20m | +7 / - | DL70ESSEN | - / -24 | 3 | Partial capture |
| 08-16 21:27 | 20m | +1 / - | WE8HAM | - / -22 | 3 | ✓ Closing fragment |
| 08-16 21:24 | 20m | 0 / - | EA6TU | - / - | 4 | Partial capture |
| 08-16 21:13 | 20m | +18 / - | <...> | - / -14 | 8 | Partial capture |
| 08-16 21:10 | 20m | +14 / - | EA8DHH | 0 / -13 | 8 | ✓ Closing observed |
| 08-15 17:31 | 20m | - / 0 | TA2ED | -7 / - | 2 | ✓ Closing fragment |
| 08-15 17:10 | 20m | - / -16 | M9OOS | +4 / - | 2 | ✓ Closing fragment |
| 08-10 19:06 | 20m | -6 / - | DD4JN | - / - | 2 | Partial capture |
| 08-10 19:02 | 20m | -1 / - | SM5UNR | -10 / -7 | 5 | ✓ Closing observed |
| 08-10 18:48 | 20m | -6 / -5 | M0OXF | -11 / - | 3 | Partial capture |
| 08-09 19:43 | 20m | -10 / - | TT1GD | - / - | 6 | Partial capture |
| 08-09 19:41 | 20m | +6 / - | SV9QWC | - / - | 3 | Partial capture |
| 08-09 18:19 | 20m | -10 / - | Z62NS | - / -8 | 8 | ✓ Closing fragment |
| 08-09 18:14 | 20m | -10 / - | BI6AN | - / - | 4 | Partial capture |
| 08-08 19:55 | 20m | -9 / - | DH1JAD | - / -9 | 3 | Partial capture |
| 08-08 19:41 | 20m | -14 / - | M7PCE | - / - | 5 | Partial capture |
| 08-07 17:42 | 20m | - / -17 | G3EFG | -2 / - | 5 | Partial capture |
| 08-07 07:42 | 20m | -10 / - | DG1ASD | - / -4 | 2 | ✓ Closing fragment |
| 08-07 07:41 | 20m | - / - | F1PSX | -9 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 215745 -10 954 US0UB M7NXS -17
UTC dB Audio Message 204345 -17 1897 PY5QW US0UB R-26 (x2) 212845 -18 383 RI1FJL US0UB KO50 214000 -21 2354 OM1AGE US0UB KO50 (x3) 211830 -4 2029 US0UB TA7MMI -18 213200 -14 1249 US0UB YT2FA -19 (x2) 214800 -4 1988 US0UB <...> -15 214830 -3 1988 US0UB RR73; JE1VTZ <...> -18 221715 +6 1070 US0UB DL3MIB JN57 (x4)
UTC dB Audio Message 223500 -4 960 US0UB K1RI -16 (x2) 142830 -20 1934 US0UB SV1TRJ RR73 (x2) 183300 -14 1325 US0UB IW5ALZ JN53 204945 -18 1160 US0UB DG4MDO JN68 205045 -10 1304 US0UB PP7GB -13 (x2) 210015 -11 985 US0UB EA7HA IM77 (x5) 210500 -5 1026 US0UB 7Z1BQ -12 (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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