EA4GKM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EA4GKM, decoded by SO8OO in southeastern Poland. 71 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-03.
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 71 FT8 messages attributed to EA4GKM as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (70%), followed by 40 m (23%) and 80 m (7%). Most decodes (97%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was 0 dB.
Overview
Bands
Last attributed message: 2026-09-03 23:56 UTC
Observed FT8 message patterns
- Attributed sample
- 71 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- 0 dB
- Estimated 10th-90th percentile
- -12 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 55.
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 EA4GKM in decoded directed-looking exchanges:
Most frequent locator attributed to EA4GKM
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
- IN80 · 31 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,193 km (approx.)
- Last such locator decoded
- 2026-09-03 23:53 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 | EA4GKM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 23:55 | 80m | -15 / - | UA4FKT | +7 / -11 | 3 | Partial capture |
| 09-03 23:54 | 80m | -17 / -7 | ON1BH | -11 / -14 | 7 | ✓ Full exchange observed |
| 09-03 23:43 | 40m | -10 / - | KY2J | - / - | 2 | Partial capture |
| 09-03 23:41 | 40m | -5 / -9 | PE1NPS | +3 / - | 4 | ✓ Closing observed |
| 09-03 23:37 | 40m | - / -10 | WO2X | -10 / - | 2 | ✓ Closing fragment |
| 09-03 23:35 | 40m | -4 / - | W4DXR | - / - | 2 | Partial capture |
| 07-24 18:20 | 20m | -6 / - | 9J2FI | - / -19 | 3 | ✓ Closing fragment |
| 07-23 10:56 | 20m | - / - | F4HSB | -20 / - | 5 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 235300 -22 1502 EA3RO EA4GKM IN80 235415 -14 1852 EA4GKM ON1BH -07 235445 +9 1502 EA4GKM YO4NF -05 235445 -9 1852 EA4GKM ON1BH -07 235500 -18 1851 ON1BH EA4GKM R-14 235515 +6 1502 EA4GKM UA4FKT LO23 235515 -11 1852 EA4GKM ON1BH RR73 235530 -15 1851 ON1BH EA4GKM R-21 235545 +8 1502 EA4GKM UA4FKT LO23 235545 -10 1852 EA4GKM ON1BH RR73 235600 -17 1852 ON1BH EA4GKM 73 235630 -15 1502 UA4FKT EA4GKM -11
UTC dB Audio Message 233530 -5 920 W4DXR EA4GKM IN80 (x2) 233715 -11 1766 EA4GKM WO2X -10 (x2) 233930 -8 1523 KY2J EA4GKM R-26 234145 +5 2512 EA4GKM PE1NPS JO22 (x2) 234230 -5 2511 PE1NPS EA4GKM RR73 234245 +4 2512 EA4GKM PE1NPS 73 234345 -9 1521 KY2J EA4GKM IN80 (x2)
UTC dB Audio Message 105645 -24 1733 EA4GKM F4HSB JN37 (x5) 181800 -11 521 EA4GKM 7Z1BM -16 182015 -5 2824 9J2FI EA4GKM IN80 (x3)
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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