DF4IAF — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving DF4IAF, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-05 and 2026-08-10.
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 38 FT8 messages attributed to DF4IAF as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 38 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -19 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 13.
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 DF4IAF in decoded directed-looking exchanges:
Most frequent locator attributed to DF4IAF
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
- JN49 · 25 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 920 km (approx.)
- Last such locator decoded
- 2026-08-10 21:28 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 | DF4IAF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-10 21:33 | 20m | -17 / - | HA1BF | - / +10 | 2 | ✓ Closing fragment |
| 08-10 21:26 | 20m | -19 / - | JH5AVM | - / -7 | 7 | ✓ Closing fragment |
| 08-10 21:18 | 20m | -13 / - | K9STL | - / -4 | 4 | ✓ Closing fragment |
| 08-10 21:15 | 20m | -2 / - | VE3ARF | - / - | 2 | Partial capture |
| 08-10 21:12 | 20m | -15 / -10 | F5NNN | -17 / -13 | 4 | ✓ Full exchange observed |
| 08-10 21:10 | 20m | -17 / - | JE2UFF | - / -6 | 3 | ✓ Closing fragment |
| 08-09 11:35 | 20m | -7 / - | <...> | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 211500 -3 444 VE3ARF DF4IAF JN49 (x2) 211830 -8 444 K9STL DF4IAF JN49 (x4) 212615 -19 2069 JH5AVM DF4IAF JN49 (x7) 213345 -17 1497 HA1BF DF4IAF R+10 (x2)
CW
No CW receptions recorded for this callsign in the last 30 days.
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