ES3RF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ES3RF, decoded by SO8OO in southeastern Poland. 40 FT8 messages attributed to this token as transmitter, on 160m, 80m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-28 and 2026-09-16.
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 40 FT8 messages attributed to ES3RF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (78%), followed by 80 m (20%) and 20 m (3%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-09-16 17:56 UTC
Observed FT8 message patterns
- Attributed sample
- 40 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -17 to -3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 11.
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 ES3RF 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 ES3RF
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
- KO29 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,083 km (approx.)
- Last such locator decoded
- 2026-09-16 17:56 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 | ES3RF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 17:56 | 160m | -15 / -19 | OZ6TL | -10 / - | 3 | ✓ Closing observed |
| 09-14 18:09 | 80m | -4 / - | IU1TEU | - / -8 | 2 | ✓ Closing fragment |
| 09-14 18:07 | 80m | -2 / -16 | UX5UO | +17 / -4 | 6 | ✓ Full exchange observed |
| 09-14 18:03 | 80m | -11 / 0 | RA2FU | 0 / 0 | 3 | Partial capture |
| 09-13 19:01 | 160m | - / - | YO2MTG | +3 / - | 4 | Partial capture |
| 09-13 18:58 | 160m | -11 / - | DK3UW | - / -20 | 4 | ✓ Closing fragment |
| 09-13 18:57 | 160m | -16 / - | YL2CA | -19 / - | 3 | ✓ Closing observed |
| 09-13 18:53 | 160m | -16 / - | DO3PKE | - / -26 | 5 | ✓ Closing fragment |
| 09-13 18:51 | 160m | -13 / -7 | SP9RPW | +11 / 0 | 6 | ✓ Full exchange observed |
| 09-13 18:51 | 160m | -10 / - | R2DRE | -20 / -6 | 3 | ✓ Closing observed |
| 09-13 18:49 | 160m | -12 / +7 | SP5GW | +5 / 0 | 5 | ✓ Full exchange observed |
| 09-13 18:48 | 160m | -12 / +5 | SP9ENV | -10 / -6 | 6 | ✓ Full exchange observed |
| 09-13 18:47 | 160m | - / -15 | R2DRE | -16 / - | 3 | Partial capture |
| 09-13 18:45 | 160m | - / -14 | DJ3JD | -13 / - | 4 | ✓ Closing fragment |
| 09-13 18:44 | 160m | -9 / -16 | OK1VKX | -3 / -14 | 13 | ✓ Full exchange observed |
| 09-13 18:42 | 160m | -9 / -4 | SQ9PBV | 0 / -7 | 6 | ✓ Full exchange observed |
| 09-13 18:40 | 160m | -9 / - | DJ3JD | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 185545 -16 1552 DO3PKE ES3RF 73 185715 -18 1552 YL2CA ES3RF KO29 185800 -19 1552 ES3RF YL2CA RR73 185815 -13 1552 YL2CA ES3RF 73 185845 -10 1552 DK3UW ES3RF KO29 (x4) 190100 +4 1704 ES3RF YO2MTG KN05 (x4) 175645 -15 2346 OZ6TL ES3RF KO29 175800 -11 1521 ES3RF OZ6TL -19 (x2)
UTC dB Audio Message 190215 -6 1960 9H4JX ES3RF KO29 180345 +0 1542 ES3RF RA2FU +00 180400 -11 1907 RA2FU ES3RF R+00 180415 +0 1542 ES3RF RA2FU RRR 180730 -2 1907 UX5UO ES3RF KO29 (x2) 180815 +12 1707 ES3RF UX5UO -16 180830 -2 1907 UX5UO ES3RF R-04 180845 +22 1707 ES3RF UX5UO RR73 180900 -3 1907 UX5UO ES3RF 73 180930 -3 1907 IU1TEU ES3RF -08 (x2)
UTC dB Audio Message 084245 -23 1595 ES3RF PB2A JO21
UTC dB Audio Message 070245 -24 1902 K0DKR ES3RF RR73
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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