DF4PY — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF4PY, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-04.
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 47 FT8 messages attributed to DF4PY 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 -9 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 47 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -22 to -6 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 22.
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 DF4PY in decoded directed-looking exchanges:
Most frequent locator attributed to DF4PY
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
- 2026-09-04 14:54 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 | DF4PY S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-04 15:12 | 40m | -6 / -14 | <...> | -9 / -19 | 9 | Partial capture |
| 09-04 15:09 | 40m | -14 / -14 | <...> | -10 / - | 3 | Partial capture |
| 09-04 15:05 | 40m | -10 / - | <...> | - / - | 3 | Partial capture |
| 09-04 15:04 | 40m | - / -10 | DK7ZT | -6 / - | 2 | Partial capture |
| 09-04 14:58 | 40m | -7 / -8 | DK7ZT | -6 / - | 4 | ✓ Closing observed |
| 09-04 14:48 | 40m | -8 / - | G0BLB | - / - | 2 | ✓ Closing fragment |
| 09-04 14:44 | 40m | -6 / -1 | DL6UM | +2 / - | 5 | ✓ Closing observed |
| 09-04 14:44 | 40m | -7 / - | S51PV | -7 / -13 | 5 | Partial capture |
| 09-04 14:29 | 40m | -7 / - | DL9KM | -2 / +7 | 11 | Partial capture |
| 09-04 14:28 | 40m | -8 / - | DK6MR | -18 / -15 | 3 | ✓ Closing observed |
| 09-04 14:27 | 40m | -7 / - | F6FHZ | - / -1 | 3 | ✓ Closing fragment |
| 09-04 14:21 | 40m | -20 / - | DK5FN | - / -2 | 2 | ✓ Closing fragment |
| 09-04 14:18 | 40m | - / +4 | DK7ZT | -13 / - | 4 | Partial capture |
| 09-04 14:17 | 40m | -22 / - | G7TVI | - / -9 | 2 | ✓ Closing fragment |
| 09-04 14:11 | 40m | -20 / - | PA2HD | - / -3 | 9 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 150630 -8 758 <...> DF4PY (x2) 150745 -4 623 DF4PY DL80NRW -14 150915 -13 623 DF4PY <...> -14 151000 -14 758 <...> DF4PY 151015 -8 623 DF4PY <...> -14 (x4) 151430 -6 759 <...> DF4PY R-19 (x6)
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