YO8SDC — 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 YO8SDC, decoded by SO8OO in southeastern Poland. 11 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-06 and 2026-11-05.
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 11 FT8 messages attributed to YO8SDC 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 (91%), followed by 80 m (9%). In this small sample, the estimated median decoder S/N was +6 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-11-05 18:42 UTC
Observed FT8 message patterns
- Attributed sample
- 11 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- +6 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 7.
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 YO8SDC in decoded directed-looking exchanges:
Most frequent locator attributed to YO8SDC
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 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 543 km (approx.)
- Last such locator decoded
- 2026-11-05 18:27 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 | YO8SDC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 18:24 | 40m | -21 / +4 | F4FSY | -12 / - | 3 | ✓ Closing observed |
| 11-05 18:22 | 40m | - / -5 | JA4DND | -10 / - | 2 | ✓ Closing fragment |
| 09-08 17:25 | 40m | +8 / - | EG1SDC | - / -22 | 4 | ✓ Closing fragment |
| 09-06 07:01 | 40m | +5 / - | SO100PKP | - / -14 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 070200 +7 1684 SO100PKP YO8SDC R-14 172515 +9 1842 EG1SDC YO8SDC KN36 (x4) 000430 -12 2248 YO8SDC EG42SDC -13 000530 -8 2248 YO8SDC R4CBF/P -20 182215 -10 832 YO8SDC JA4DND -05 (x2) 182400 -22 1720 YO4LUP YO8SDC RR73 182415 -10 1877 YO8SDC F4FSY +04 (x2) 182500 -21 1719 F4FSY YO8SDC 73 182730 -23 1719 VJ6X YO8SDC KN36 184215 -18 1719 BA8BLK YO8SDC RR73
UTC dB Audio Message 225345 +6 1717 EH1SDC YO8SDC KN36
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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