DB1RUL — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DB1RUL, decoded by SO8OO in southeastern Poland. 12 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-28 and 2026-09-30.
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 12 FT8 messages attributed to DB1RUL as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 40 m (33%) and 160 m (25%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-30 19:35 UTC
Observed FT8 message patterns
- Attributed sample
- 12 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -16 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 3.
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 DB1RUL in decoded directed-looking exchanges:
Most frequent locator attributed to DB1RUL
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
- JN49 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 920 km (approx.)
- Last such locator decoded
- 2026-09-30 19:34 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 | DB1RUL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-30 19:34 | 80m | -22 / - | DO1ARD | - / - | 2 | ✓ Closing fragment |
| 09-30 19:24 | 160m | -15 / - | DD4U | - / -11 | 3 | ✓ Closing fragment |
| 09-28 22:37 | 80m | -1 / +8 | DD4U | -2 / +7 | 4 | ✓ Full exchange observed |
| 09-28 10:32 | 40m | -17 / +6 | DD4U | -24 / -5 | 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 223745 +4 1696 DD4U DB1RUL JN49 223800 +0 1451 DB1RUL DD4U +08 223815 -6 1696 DD4U DB1RUL R+07 223830 -3 1451 DB1RUL DD4U RR73 223915 -3 1696 DJ0ABM DB1RUL RRR 193400 -20 1299 DO1ARD DB1RUL JN49 (x2)
UTC dB Audio Message 192415 -16 1299 DD4U DB1RUL JN49 (x3)
UTC dB Audio Message 103215 -19 2176 DD4U DB1RUL JN49 103230 -24 1837 DB1RUL DD4U +06 103245 -17 2177 DD4U DB1RUL R-05 (x2) 103445 -15 2176 DH1HF DB1RUL RRR
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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