YO8DFF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YO8DFF, decoded by SO8OO in southeastern Poland. 48 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-17.
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 48 FT8 messages attributed to YO8DFF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (69%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +5 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 48 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -13 to +13 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 43.
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 YO8DFF 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 YO8DFF
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
- KN36 · 25 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 543 km (approx.)
- Last such locator decoded
- 2026-09-17 17:42 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 | YO8DFF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-17 17:47 | 40m | +4 / -7 | UR9QQ | -1 / -4 | 8 | ✓ Full exchange observed |
| 09-17 17:45 | 40m | +2 / - | RN3YN | -8 / -11 | 3 | Partial capture |
| 09-17 17:44 | 40m | - / +3 | OE8PIT | +6 / - | 6 | Partial capture |
| 09-17 17:41 | 40m | -18 / - | I0XNH | - / - | 2 | Partial capture |
| 09-17 17:37 | 40m | -14 / - | I0XNH | - / - | 3 | Partial capture |
| 09-16 07:18 | 40m | +2 / - | SP5EXA | -14 / - | 5 | ✓ Full exchange observed |
| 09-16 07:07 | 40m | +10 / -11 | UA4FKT | -16 / -13 | 5 | ✓ Full exchange observed |
| 09-16 07:06 | 40m | +6 / -2 | R3KJF | -7 / +8 | 5 | ✓ Full exchange observed |
| 09-16 07:04 | 40m | +5 / - | IU8RFW | -19 / -6 | 4 | ✓ Closing observed |
| 09-16 07:02 | 40m | +6 / 0 | SP2JEL | -20 / -2 | 4 | ✓ Full exchange observed |
| 09-16 07:01 | 40m | +6 / - | SP2HHX | - / - | 3 | Partial capture |
| 09-08 19:29 | 40m | - / -18 | CN8NS | -4 / - | 3 | Partial capture |
| 09-08 19:29 | 40m | - / -6 | G8OO | 0 / - | 6 | ✓ Closing fragment |
| 09-08 19:26 | 40m | -6 / - | SQ9CXC | -19 / - | 2 | ✓ Closing observed |
| 09-08 16:48 | 40m | +10 / - | BG2GWN | - / - | 10 | Partial capture |
| 08-30 17:47 | 40m | +4 / -1 | M9OOS | -5 / -4 | 5 | ✓ Full exchange observed |
| 08-30 17:44 | 40m | +1 / - | SQ9BDB | -9 / -2 | 7 | ✓ Closing observed |
| 08-30 17:41 | 40m | +5 / -4 | OZ7CL | -3 / -3 | 6 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 174500 +8 341 YO8DFF OE8PIT JN66 174530 -11 749 YO8DFF RN3YN KO73 174530 +9 341 YO8DFF OE8PIT R+03 (x3) 174700 -7 1065 YO8DFF UR9QQ KN77 174700 -5 749 YO8DFF RN3YN KO73 174730 +1 1065 YO8DFF UR9QQ KN77 174745 +2 1090 RN3YN YO8DFF -11 174815 +7 1090 UR9QQ YO8DFF -04 (x3) 174930 +5 1065 YO8DFF UR9QQ R-07 174945 +2 1090 UR9QQ YO8DFF RR73 175000 -2 1065 YO8DFF UR9QQ 73
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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