EA5FSJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EA5FSJ, decoded by SO8OO in southeastern Poland. 46 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-09-21 and 2026-10-06.
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 46 FT8 messages attributed to EA5FSJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 10 m (37%) and 80 m (4%). Several six-hour UTC windows tied for the largest share (52%), 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: 2026-10-06 05:51 UTC
Observed FT8 message patterns
- Attributed sample
- 46 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -23 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 18.
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 EA5FSJ 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 EA5FSJ
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
- IM98 · 24 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,203 km (approx.)
- Last such locator decoded
- 2026-10-06 05:40 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 | EA5FSJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-06 06:03 | 80m | - / - | DL1UDO | -5 / - | 4 | Partial capture |
| 10-06 05:49 | 80m | -23 / -6 | PA3CPS | -13 / - | 4 | ✓ Closing observed |
| 10-06 05:48 | 80m | - / -10 | GM6URC | -18 / - | 2 | Partial capture |
| 10-06 05:47 | 80m | - / -1 | G0BLB | -16 / - | 2 | Partial capture |
| 10-06 05:40 | 40m | - / - | G3TKT | -21 / - | 4 | Partial capture |
| 10-06 05:40 | 40m | - / - | IU1SCQ | -8 / - | 2 | Partial capture |
| 10-06 05:40 | 40m | - / - | DK1UJ | 0 / - | 2 | Partial capture |
| 10-06 05:33 | 40m | -11 / - | YO6LM | -8 / -18 | 2 | ✓ Closing observed |
| 10-06 05:27 | 40m | -11 / - | N0KWA | - / - | 8 | Partial capture |
| 10-03 12:58 | 10m | +4 / - | BH8WWP | - / -22 | 14 | Partial capture |
| 10-03 12:56 | 10m | +3 / - | VU2CPL | - / -10 | 3 | ✓ Closing fragment |
| 09-30 16:41 | 40m | -20 / - | LB8TG | - / - | 2 | Partial capture |
| 09-30 16:39 | 40m | - / - | IC8TEM | -7 / - | 11 | Partial capture |
| 09-30 16:35 | 40m | - / - | F8VNU | -6 / - | 2 | Partial capture |
| 09-30 16:30 | 40m | - / -12 | R3KAB | -13 / - | 2 | Partial capture |
| 09-27 07:06 | 40m | - / - | PE1NPS | -19 / - | 3 | Partial capture |
| 09-27 07:04 | 40m | - / -14 | DB8BT | -16 / - | 3 | ✓ Closing fragment |
| 09-27 07:01 | 40m | - / - | SP1MGM | -3 / - | 3 | Partial capture |
| 09-27 06:56 | 40m | - / - | SP1MGM | -4 / - | 5 | Partial capture |
| 09-27 06:48 | 40m | - / - | PE1NPS | -18 / - | 2 | Partial capture |
| 09-27 06:48 | 40m | - / - | SP1MGM | -1 / - | 3 | Partial capture |
| 09-27 05:59 | 80m | - / -5 | DL8WEM | -8 / - | 3 | ✓ Closing fragment |
| 09-27 05:59 | 80m | - / -11 | F1PBZ | -1 / - | 3 | Partial capture |
| 09-27 05:53 | 40m | - / +2 | F1PBZ | -9 / - | 3 | Partial capture |
| 09-25 05:52 | 40m | - / -20 | DJ0MAB | -9 / - | 11 | ✓ Closing fragment |
| 09-25 05:51 | 40m | - / - | F4BYA | +1 / - | 4 | Partial capture |
| 09-25 05:48 | 40m | - / - | SQ3MQD | -2 / - | 6 | Partial capture |
| 09-25 05:43 | 40m | - / -7 | F1PBZ | -3 / - | 4 | Partial capture |
| 09-25 05:43 | 40m | - / - | F4BYA | 0 / - | 3 | Partial capture |
| 09-25 05:40 | 40m | - / -14 | YO4NT | -4 / - | 2 | ✓ Closing fragment |
| 09-25 05:37 | 40m | -19 / - | KC2NJ | - / -13 | 2 | ✓ Closing fragment |
| 09-25 05:36 | 40m | - / -6 | IK4TVP | +3 / - | 6 | Partial capture |
| 09-21 16:27 | 40m | - / - | OE8PIT | +9 / - | 3 | Partial capture |
| 09-21 16:27 | 40m | - / -15 | G0RVY | -7 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 054745 -16 1879 EA5FSJ G0BLB IO81 054800 -20 1694 EA5FSJ GM6URC -10 054815 -15 1879 EA5FSJ G0BLB R-01 054830 -16 1694 EA5FSJ GM6URC -10 054915 -10 1419 EA5FSJ PA3CPS JO32 (x2) 055000 -23 1419 PA3CPS EA5FSJ RR73 055015 -13 1419 EA5FSJ PA3CPS 73 055100 -24 1419 GM6URC EA5FSJ 73 055215 -15 2411 EA5FSJ EA3AKY JN01 (x2) 060315 -9 1151 EA5FSJ DL1UDO JO31 (x4)
UTC dB Audio Message 053345 -11 1533 YO6LM EA5FSJ -18 053430 -8 2076 EA5FSJ YO6LM 73 053445 -11 1533 R8KAW/P EA5FSJ R-12 053615 -8 1533 CQ EA5FSJ IM98 (x3) 054000 -1 312 EA5FSJ DK1UJ JO31 054015 -16 1686 CQ EA5FSJ IM98 054030 -7 1998 EA5FSJ IU1SCQ JN44 054030 -23 1687 EA5FSJ G3TKT IO92 054030 +0 2882 EA5FSJ DK1UJ JO31 054100 -8 1998 EA5FSJ IU1SCQ JN44 054100 -23 1686 EA5FSJ G3TKT IO92 (x3)
UTC dB Audio Message 125700 +3 1257 VU2CPL EA5FSJ 73 125800 +3 1257 BH8WWP EA5FSJ IM98 (x14)
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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