ON7EMS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON7EMS, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-08-25.
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 22 FT8 messages attributed to ON7EMS as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -6 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 22 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -17 to 0 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 16.
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 ON7EMS in decoded directed-looking exchanges:
Most frequent locator attributed to ON7EMS
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
- JO20 · 17 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,194 km (approx.)
- Last such locator decoded
- 2026-08-25 20:28 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 | ON7EMS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-25 20:27 | 20m | -8 / - | ON5GQ | - / - | 3 | Partial capture |
| 08-25 20:24 | 20m | -12 / - | MI0JZZ | - / - | 5 | Partial capture |
| 08-25 20:21 | 20m | -5 / - | CT7AQP | - / -22 | 4 | ✓ Closing fragment |
| 08-25 19:12 | 20m | -2 / - | OZ2BX | - / - | 4 | Partial capture |
| 08-25 19:09 | 20m | -3 / - | DL7GAL | - / - | 3 | Partial capture |
| 08-25 19:07 | 20m | -2 / - | CT1FIU | - / - | 2 | Partial capture |
| 08-22 20:48 | 20m | -24 / -16 | M0LAD | -6 / -10 | 4 | Partial capture |
| 08-22 20:39 | 20m | - / -11 | EB3JT | +3 / - | 4 | ✓ Closing fragment |
| 08-22 20:38 | 20m | - / -12 | EA4D | -1 / - | 2 | Partial capture |
| 08-18 18:39 | 40m | - / -11 | 9A4ZM | 0 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 191315 -5 1943 OZ2BX ON7EMS JO20 (x3) 202100 -4 1323 CT7AQP ON7EMS R-22 (x4) 202430 -6 1323 MI0JZZ ON7EMS JO20 (x5) 202730 -7 1322 ON5GQ ON7EMS JO20 (x3)
UTC dB Audio Message 183900 +0 2631 ON7EMS 9A4ZM JN86 (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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