EU7SV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EU7SV, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-13 and 2026-09-19.
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 35 FT8 messages attributed to EU7SV as the transmitting token by decoded message structure across 3 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 (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (94%); the estimated median was +7 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 35 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- +7 dB
- Estimated 10th-90th percentile
- +1 to +12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 33.
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 EU7SV 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 EU7SV
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
- KO43 · 20 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 635 km (approx.)
- Last such locator decoded
- 2026-09-19 19:03 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 | EU7SV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 04:12 | 40m | - / -14 | RZ6L | +2 / - | 2 | ✓ Closing fragment |
| 09-20 04:07 | 40m | - / -4 | PD7LJ | +5 / - | 3 | ✓ Closing fragment |
| 09-20 04:02 | 40m | - / -3 | UA3GDJ | -4 / - | 2 | Partial capture |
| 09-20 03:59 | 40m | - / -6 | R7YZ | -2 / - | 3 | Partial capture |
| 09-20 03:55 | 40m | - / -1 | R4FDD | +3 / - | 2 | ✓ Closing fragment |
| 09-20 03:48 | 40m | - / +4 | DL8TV | +8 / - | 3 | ✓ Closing fragment |
| 09-20 03:41 | 40m | - / - | UA9SY | -20 / - | 2 | ✓ Closing fragment |
| 09-20 03:36 | 40m | - / - | KA6AKH | -16 / - | 3 | Partial capture |
| 09-20 03:36 | 40m | - / 0 | ON1DGN | -4 / - | 2 | ✓ Closing fragment |
| 09-19 19:03 | 40m | +6 / - | JN1XNI | - / - | 2 | Partial capture |
| 09-19 19:01 | 40m | +9 / - | BG4UCZ | - / - | 3 | Partial capture |
| 09-19 19:00 | 40m | +5 / - | RD4AAK | - / -4 | 2 | ✓ Closing fragment |
| 09-19 18:59 | 40m | +10 / - | EA7UW | -24 / - | 2 | ✓ Closing observed |
| 09-19 18:58 | 40m | +7 / - | JH5LCN | - / -19 | 3 | ✓ Closing fragment |
| 09-19 18:56 | 40m | +8 / - | EA7UW | - / -22 | 2 | Partial capture |
| 09-19 18:55 | 40m | - / -7 | ON1DGN | -5 / - | 2 | Partial capture |
| 09-19 18:50 | 40m | +5 / - | JH5LCN | - / - | 4 | Partial capture |
| 09-19 03:59 | 40m | - / -12 | NP3RK | -9 / - | 5 | ✓ Closing fragment |
| 09-19 03:57 | 40m | - / -8 | TA2EE | -7 / - | 5 | ✓ Closing fragment |
| 09-19 03:57 | 40m | - / -11 | HK3YL | -21 / - | 2 | Partial capture |
| 09-19 03:49 | 40m | - / +5 | UA4FKT | +2 / - | 3 | ✓ Closing fragment |
| 09-14 19:58 | 40m | -4 / - | IZ8PPI | - / -12 | 2 | ✓ Closing fragment |
| 09-14 19:56 | 40m | +13 / - | TN8GD | - / -17 | 4 | ✓ Closing fragment |
| 09-13 20:46 | 40m | - / - | R7GA | -6 / - | 5 | Partial capture |
| 09-13 19:13 | 40m | +5 / - | 8Z1IT | - / - | 2 | Partial capture |
| 09-13 18:13 | 40m | +7 / -4 | HG8LXL | -13 / - | 2 | ✓ Closing observed |
| 09-13 18:09 | 40m | +10 / +6 | RD7O | -1 / -14 | 5 | ✓ Full exchange observed |
| 09-13 18:09 | 40m | - / - | RX3ASQ | -12 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 034815 +7 1853 EU7SV DL8TV JN49 (x3) 035515 +3 2796 EU7SV R4FDD -01 (x2) 035945 -4 1205 EU7SV R7YZ LN04 (x3) 040215 +0 1329 EU7SV UA3GDJ KO92 (x2) 040715 +7 2794 EU7SV PD7LJ JO21 (x3) 041200 -3 2244 EU7SV RZ6L R-14 (x2)
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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