F4DWB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4DWB, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-08-28.
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 28 FT8 messages attributed to F4DWB as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (79%), followed by 40 m (14%) and 10 m (7%). Most decodes (79%) fell within the six-hour window 09:00-15:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was +2 dB.
Overview
Bands
Last attributed message: 2026-08-28 10:03 UTC
Observed FT8 message patterns
- Attributed sample
- 28 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- +2 dB
- Estimated 10th-90th percentile
- -11 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 24.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with F4DWB in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to F4DWB
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
- JN38 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,084 km (approx.)
- Last such locator decoded
- 2026-08-28 10:03 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 | F4DWB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-28 10:01 | 20m | 0 / - | RI1FJL | - / -15 | 3 | ✓ Closing fragment |
| 08-28 10:00 | 20m | - / - | OZ5AGJ | +8 / - | 2 | Partial capture |
| 08-28 10:00 | 20m | - / - | G8IXM | -7 / - | 2 | Partial capture |
| 08-28 09:57 | 20m | +6 / +1 | M7NFV | +8 / -7 | 6 | ✓ Full exchange observed |
| 08-24 16:53 | 40m | -11 / - | EG5DX | - / -4 | 3 | ✓ Closing fragment |
| 08-22 12:37 | 20m | +22 / - | BG8SVE | - / -14 | 2 | Partial capture |
| 07-18 14:43 | 20m | +1 / - | BG0AYW | - / -10 | 2 | Partial capture |
| 07-18 13:43 | 20m | +4 / - | VU2KPH | - / -15 | 2 | ✓ Closing fragment |
| 07-18 13:40 | 20m | +10 / - | BA8BLK | - / -11 | 2 | ✓ Closing fragment |
| 07-18 13:38 | 20m | +5 / - | EX8ABR | - / -17 | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 095700 +9 2423 M7NFV F4DWB -07 (x2) 095845 +7 356 F4DWB M7NFV R+01 095900 +5 2423 M7NFV F4DWB RR73 095915 +10 356 F4DWB M7NFV 73 095930 +4 2423 M7NFV F4DWB 73 100000 +7 2423 CQ F4DWB JN38 100015 -7 862 F4DWB G8IXM JO02 100045 +9 2423 F4DWB OZ5AGJ JO47 100045 -7 862 F4DWB G8IXM JO02 100115 +7 2423 F4DWB OZ5AGJ JO47 100145 +2 2423 RI1FJL F4DWB JN38 (x3) 100315 +2 2424 CQ F4DWB JN38
UTC dB Audio Message 165345 -11 1139 EG5DX F4DWB JN38 (x3) 170630 +1 1627 F4DWB UT5ZC -19 224045 -12 1981 ZZ2DX F4DWB JN38
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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