UB3MAS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UB3MAS, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-07-31.
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 30 FT8 messages attributed to UB3MAS as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (20%). Several six-hour UTC windows tied for the largest share (93%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-07-31 14:31 UTC
Observed FT8 message patterns
- Attributed sample
- 30 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -10 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 23.
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 UB3MAS in decoded directed-looking exchanges:
Most frequent locator attributed to UB3MAS
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
- KO96 · 18 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,353 km (approx.)
- Last such locator decoded
- 2026-07-31 14:31 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 | UB3MAS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-19 14:42 | 20m | - / -8 | OK1WCF | -1 / - | 2 | ✓ Closing fragment |
| 07-19 14:38 | 20m | - / -10 | F1PBZ | -2 / - | 2 | Partial capture |
| 07-19 14:38 | 20m | - / -8 | R4FDW | -10 / - | 2 | Partial capture |
| 06-26 12:51 | 20m | - / - | F5IXN | -9 / - | 4 | Partial capture |
| 06-20 03:26 | 40m | -9 / -4 | SP1EG | -4 / - | 3 | ✓ Closing observed |
| 06-20 03:25 | 40m | -11 / -13 | PE1NPS | -8 / - | 3 | ✓ Closing observed |
| 06-20 03:19 | 40m | - / -9 | F4FLF | -2 / - | 2 | Partial capture |
| 06-20 03:19 | 40m | - / -6 | SP1EG | -14 / - | 2 | Partial capture |
| 06-18 12:26 | 20m | -10 / - | 4S6ARW | - / - | 2 | Partial capture |
| 06-18 12:21 | 20m | -8 / - | 4S6ARW | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 122245 -8 2513 4S6ARW UB3MAS KO96 (x3) 125100 -10 1270 UB3MAS F5IXN JN23 (x4) 143815 -4 2777 UB3MAS F1PBZ -10 143815 -9 1326 UB3MAS R4FDW -08 143845 +0 2777 UB3MAS F1PBZ -10 143845 -11 1326 UB3MAS R4FDW -08 144215 +1 1220 UB3MAS OK1WCF R-08 (x2) 064700 +8 2623 UB3MAS F5HNQ IN98 143145 +1 2553 R0ADN UB3MAS KO96
UTC dB Audio Message 031900 -13 1480 UB3MAS SP1EG -06 031900 -5 2522 UB3MAS F4FLF JN18 031930 -15 1480 UB3MAS SP1EG -15 031930 +2 2521 UB3MAS F4FLF R-09 032530 -5 2595 UB3MAS PE1NPS R-13 032545 -11 2519 PE1NPS UB3MAS RR73 032600 -10 2595 UB3MAS PE1NPS 73 032600 -5 1481 UB3MAS SP1EG -04 (x2) 032645 -9 2520 SP1EG UB3MAS 73
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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