W3DF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving W3DF, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-06.
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 15 FT8 messages attributed to W3DF as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 15 messages
- Active dates
- 1 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) 5, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 10.
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 W3DF in decoded directed-looking exchanges:
Most frequent locator attributed to W3DF
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
- FM19 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,310 km (approx.)
- Last such locator decoded
- 2026-09-06 03:10 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 | W3DF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-12 04:13 | 40m | - / -16 | DL8WEM | -1 / - | 4 | ✓ Closing fragment |
| 09-12 04:10 | 40m | - / -10 | SV2KD | 0 / - | 2 | ✓ Closing fragment |
| 09-12 04:03 | 40m | - / - | EA5IT | -1 / - | 2 | Partial capture |
| 09-12 03:56 | 40m | - / -11 | TA3NK | -12 / - | 14 | ✓ Closing fragment |
| 09-12 03:54 | 40m | - / -11 | R7DX | +8 / - | 3 | ✓ Closing fragment |
| 09-06 03:08 | 40m | -20 / - | Z62NS | - / - | 5 | Partial capture |
| 09-06 03:04 | 40m | -6 / -2 | F5PBG | +9 / -1 | 5 | ✓ Full exchange observed |
| 09-06 03:02 | 40m | -8 / - | DL8HXP | - / -6 | 2 | ✓ Closing fragment |
| 09-06 03:00 | 40m | -8 / - | CX2SA | - / -8 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 035930 -14 234 W3DF TA3NK KM39 (x7) 040300 -2 2518 W3DF EA5IT IM99 (x2) 041000 +0 244 W3DF SV2KD -10 (x2) 041330 -2 240 W3DF DL8WEM JN48 (x4)
UTC dB Audio Message 144600 -12 551 W3DF PD1DTH R-21
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