DF1AI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF1AI, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-22 and 2026-09-10.
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 21 FT8 messages attributed to DF1AI 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 (90%), followed by 40 m (10%). In this small sample, the estimated median decoder S/N was -4 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-10 17:43 UTC
Observed FT8 message patterns
- Attributed sample
- 21 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -16 to +3 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 14.
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 DF1AI in decoded directed-looking exchanges:
Most frequent locator attributed to DF1AI
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
- JN67 · 16 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 699 km (approx.)
- Last such locator decoded
- 2026-09-10 17:43 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 | DF1AI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-10 17:43 | 40m | +3 / - | RL2F | - / -2 | 2 | Partial capture |
| 08-28 18:33 | 20m | -7 / - | BH4THI | - / -12 | 3 | Partial capture |
| 08-26 04:17 | 20m | - / - | R6LKG | +9 / - | 5 | Partial capture |
| 08-23 04:07 | 20m | - / -5 | UN0GY | -3 / - | 4 | ✓ Closing fragment |
| 07-22 05:39 | 20m | -7 / - | ZL4TT | - / - | 7 | Partial capture |
| 07-22 05:33 | 20m | -1 / - | VK5WU | - / - | 4 | Partial capture |
| 07-22 05:31 | 20m | -4 / - | NU1T | - / -7 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 174300 +3 1735 RL2F DF1AI JN67 (x2)
UTC dB Audio Message 054300 -18 2132 ZL4TT DF1AI JN67 054600 -17 1725 CQ DF1AI JN67 054630 -13 1725 SP6AMK DF1AI R-10 040730 -1 2662 DF1AI UN0GY -05 (x4) 041730 -4 317 DF1AI R6LKG LN07 (x5) 183300 -14 1896 BH4THI DF1AI JN67 (x3)
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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