EA5GMM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EA5GMM, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-15.
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 27 FT8 messages attributed to EA5GMM as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (7%). 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 weak S/N range (81%); the estimated median was -20 dB.
Overview
Bands
Last attributed message: 2026-08-15 19:37 UTC
Observed FT8 message patterns
- Attributed sample
- 27 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -20 dB
- Estimated 10th-90th percentile
- -24 to -11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 1.
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 EA5GMM 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 EA5GMM
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
- IM97 · 17 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,280 km (approx.)
- Last such locator decoded
- 2026-08-15 19:30 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 | EA5GMM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 19:11 | 80m | - / - | HA3IC | +3 / - | 2 | Partial capture |
| 08-15 19:33 | 20m | -21 / -6 | ON1JP | -8 / -24 | 6 | Partial capture |
| 08-15 19:03 | 20m | -14 / - | JH5AVM | - / -2 | 7 | ✓ Closing fragment |
| 07-25 18:51 | 20m | -19 / - | BV2NF | - / - | 4 | Partial capture |
| 07-17 10:31 | 20m | - / -9 | ON1JP | -24 / - | 2 | Partial capture |
| 07-11 20:06 | 40m | -22 / - | YH2AZ | - / - | 2 | Partial capture |
| 07-07 18:53 | 20m | -23 / - | BH5UUN | - / -20 | 3 | Partial capture |
| 07-07 18:50 | 20m | -24 / - | BH5UUN | - / - | 2 | Partial capture |
| 07-04 20:20 | 20m | - / -12 | II0WWA | -5 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200645 -22 1633 YH2AZ EA5GMM IM97 (x2) 174100 -16 1764 EA5GMM EG1PDA RR73
UTC dB Audio Message 191100 +0 1610 EA5GMM HA3IC JN86 (x2) 191200 +9 1033 EA5GMM DL3MIB JN57
UTC dB Audio Message 152400 -12 2488 EA5GMM F1PBZ -15
UTC dB Audio Message 190700 -24 1672 EA9ACF EA5GMM IM97 190300 -13 1672 JH5AVM EA5GMM IM97 (x7) 193000 -21 1674 4X5EF EA5GMM IM97 193345 -10 1504 EA5GMM ON1JP -06 193500 -22 1673 ON1JP EA5GMM R-24 193515 -7 1505 EA5GMM ON1JP -06 193530 -19 1673 ON1JP EA5GMM R-24 (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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