SP7Y — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP7Y, decoded by SO8OO in southeastern Poland. 81 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-09-09.
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 81 FT8 messages attributed to SP7Y as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (90%), followed by 160 m (5%) and 40 m (5%). Most decodes (100%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was +7 dB.
Overview
Bands
Last attributed message: 2026-09-09 18:55 UTC
Observed FT8 message patterns
- Attributed sample
- 81 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- +7 dB
- Estimated 10th-90th percentile
- -10 to +14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 68.
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 SP7Y 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 SP7Y
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
- JO90 · 65 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 208 km (approx.)
- Last such locator decoded
- 2026-09-09 18:55 UTC
Other locator fields attributed to this token: KO11 (2).
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 | SP7Y S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-09 18:54 | 80m | +16 / - | 5Z4VJ | - / - | 3 | Partial capture |
| 09-07 19:58 | 40m | +6 / - | TN8GD | - / - | 4 | Partial capture |
| 09-02 20:33 | 80m | +14 / -13 | 5Z4VJ | -11 / -10 | 7 | ✓ Full exchange observed |
| 09-01 17:21 | 80m | +2 / - | P29YY | - / -17 | 9 | ✓ Closing fragment |
| 09-01 17:11 | 80m | +7 / - | P29YY | - / -19 | 13 | Partial capture |
| 09-01 17:07 | 80m | -8 / - | 9V1YC | - / - | 2 | Partial capture |
| 09-01 17:05 | 80m | -6 / - | P29YY | - / -13 | 4 | Partial capture |
| 08-29 22:55 | 160m | +14 / - | RI1FJL | - / -17 | 4 | Partial capture |
| 08-27 19:34 | 80m | +11 / - | RI1FJL | - / -14 | 23 | Partial capture |
| 08-26 20:22 | 80m | -9 / - | RI1FJL | - / - | 14 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172315 +2 1750 P29YY SP7Y JO90 (x5) 203315 +16 2359 5Z4VJ SP7Y JO90 (x3) 203430 -11 2358 SP7Y 5Z4VJ -13 203445 +11 2359 5Z4VJ SP7Y R-10 203500 -11 2359 SP7Y 5Z4VJ RR73 203515 +13 2359 5Z4VJ SP7Y 73 (x4)
UTC dB Audio Message 195815 +5 1200 TN8GD SP7Y JO90 (x4)
UTC dB Audio Message 225545 +15 1095 RI1FJL SP7Y KO11 (x4)
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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