DO7RU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DO7RU, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-27 and 2026-06-28.
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 20 FT8 messages attributed to DO7RU as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). In this small sample, the estimated median decoder S/N was -4 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 20 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -8 to -1 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 20.
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 DO7RU in decoded directed-looking exchanges:
Most frequent locator attributed to DO7RU
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
- JO31 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,054 km (approx.)
- Last such locator decoded
- 2026-06-28 19:12 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 | DO7RU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-19 20:14 | 10m | - / - | PT9PA | -20 / - | 2 | ✓ Closing fragment |
| 06-28 19:12 | 10m | 0 / +4 | ER3CT | -2 / -14 | 5 | ✓ Full exchange observed |
| 06-27 11:11 | 10m | -3 / - | F6BHK | - / -17 | 5 | ✓ Closing fragment |
| 06-27 10:57 | 10m | -7 / - | UA4FKT | - / -12 | 3 | Partial capture |
| 06-27 10:54 | 10m | -6 / - | GJ0KYZ | - / - | 2 | Partial capture |
| 06-27 10:52 | 10m | -5 / - | OH6CXP | - / 0 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 110415 -10 2709 DO7RU IQ4JO JN63 110430 -5 1473 CQ DO7RU JO31 110630 -6 1472 UT8SQ DO7RU -01 111100 -4 1472 F6BHK DO7RU -17 (x5) 191215 +1 1886 ER3CT DO7RU JO31 191230 -4 1885 DO7RU ER3CT +04 191245 +2 1886 ER3CT DO7RU R-14 191300 +1 1887 DO7RU ER3CT RR73 191315 -3 1886 ER3CT DO7RU 73 201400 -20 1376 DO7RU PT9PA RR73 (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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