DN9RV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DN9RV, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 10m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-07.
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 18 FT8 messages attributed to DN9RV as the transmitting token by decoded message structure across 1 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 -21 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 18 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -21 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.
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 DN9RV in decoded directed-looking exchanges:
Most frequent locator attributed to DN9RV
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 · 17 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,054 km (approx.)
- Last such locator decoded
- 2026-08-07 09:46 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 | DN9RV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-11 18:06 | 10m | - / -13 | IZ7UIU | -12 / - | 2 | ✓ Closing fragment |
| 08-07 09:33 | 10m | -20 / - | D2UY | - / - | 2 | Partial capture |
| 08-07 09:07 | 10m | - / - | DN9GLA | -7 / - | 2 | ✓ Closing fragment |
| 08-07 09:03 | 10m | - / - | DN9GLA | -10 / - | 3 | Partial capture |
| 08-07 08:52 | 10m | - / -19 | RU7A | 0 / - | 2 | Partial capture |
| 08-07 08:48 | 10m | - / -4 | LZ1JZ | -9 / - | 3 | ✓ Closing fragment |
| 08-02 19:28 | 10m | - / -14 | EA8UP | -24 / - | 3 | ✓ Closing fragment |
| 07-21 06:31 | 10m | - / - | F4NLW/P | -10 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 092815 -16 1099 SQ5JRC DN9RV 73 092915 -22 1099 CQ DN9RV JO31 (x3) 093345 -21 1100 D2UY DN9RV JO31 (x2) 093615 -21 1100 SQ5JRC DN9RV JO31 094045 -24 1700 CQ DN9RV JO31 (x5) 104600 -20 1226 DN9RV LZ2HA -25 180630 -12 1337 DN9RV IZ7UIU -13 (x2)
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