DB3OA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DB3OA, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-30.
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 17 FT8 messages attributed to DB3OA as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (53%), followed by 20 m (29%) and 40 m (18%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-30 10:28 UTC
Observed FT8 message patterns
- Attributed sample
- 17 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -7 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 9.
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 DB3OA in decoded directed-looking exchanges:
Most frequent locator attributed to DB3OA
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
- JO42 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 934 km (approx.)
- Last such locator decoded
- 2026-08-30 10:25 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 | DB3OA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 10:28 | 20m | -5 / - | LZ1DIO | - / -5 | 2 | ✓ Closing fragment |
| 08-30 10:25 | 20m | -6 / - | SQ8GMW | - / - | 2 | Partial capture |
| 08-29 19:08 | 20m | - / -7 | EA8UP | +15 / - | 3 | ✓ Closing fragment |
| 08-29 18:59 | 20m | - / -16 | HB10GBT | -11 / - | 8 | Partial capture |
| 08-29 18:55 | 80m | -6 / -9 | LZ2VQ | +1 / -2 | 4 | ✓ Full exchange observed |
| 08-29 18:54 | 80m | -6 / - | OE1PHS | -13 / -9 | 4 | ✓ Closing observed |
| 08-29 18:49 | 80m | - / - | DO9BAU | +2 / - | 8 | Partial capture |
| 08-29 18:49 | 80m | -7 / - | UA4FKT | +9 / +1 | 5 | Partial capture |
| 08-29 18:49 | 80m | 0 / - | DO1THG | - / - | 2 | ✓ Closing fragment |
| 08-29 11:59 | 40m | -11 / - | ON6SAT | - / -12 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 185900 -15 1714 DB3OA HB10GBT -16 (x8) 190845 +14 408 DB3OA EA8UP -07 (x3) 102500 -10 511 SQ8GMW DB3OA JO42 (x2) 102800 -7 1031 LZ1DIO DB3OA R-05 (x2)
UTC dB Audio Message 185115 +1 2402 DB3OA DO9BAU JO62 185130 -2 1702 UA4FKT DB3OA +01 185145 +6 2402 DB3OA DO9BAU JO62 (x2) 185230 -12 1701 UA4FKT DB3OA +01 185245 +7 2402 DB3OA DO9BAU JO62 (x2) 185415 -9 1146 OE1PHS DB3OA JO42 (x2) 185500 -13 1147 DB3OA OE1PHS RRR 185515 -5 1146 OE1PHS DB3OA 73 185530 +5 1146 DB3OA LZ2VQ KN23 185545 -6 1146 LZ2VQ DB3OA -02 185600 +4 1146 DB3OA LZ2VQ R-09 (x2)
UTC dB Audio Message 114615 -18 1017 WA4FU DB3OA JO42 115915 -10 646 ON6SAT DB3OA JO42 (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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