4X5GR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 4X5GR, decoded by SO8OO in southeastern Poland. 16 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-07-15.
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 16 FT8 messages attributed to 4X5GR as the transmitting token by decoded message structure across 3 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 -10 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 16 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -10 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 6.
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 4X5GR in decoded directed-looking exchanges:
Most frequent locator attributed to 4X5GR
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
- KM72 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,224 km (approx.)
- Last such locator decoded
- 2026-07-15 14:23 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 | 4X5GR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-09 10:01 | 20m | - / - | OE/DJ1MV | -19 / - | 4 | Partial capture |
| 08-09 10:01 | 20m | - / - | ON8BB | -16 / - | 3 | Partial capture |
| 08-09 09:58 | 20m | - / - | IZ3EAW | -17 / - | 2 | Partial capture |
| 08-09 09:57 | 20m | - / - | ON8BB | -15 / - | 2 | Partial capture |
| 08-09 09:55 | 20m | - / -14 | 9A4ZM | -5 / - | 3 | ✓ Closing fragment |
| 07-15 14:22 | 20m | -13 / - | DG6IDA | - / -3 | 5 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 095415 -19 2170 4X5GR F1HFP -13 095545 +1 2167 4X5GR 9A4ZM JN86 (x3) 095715 -17 2140 4X5GR ON8BB JO21 (x2) 095815 -19 2170 4X5GR IZ3EAW JN55 (x2) 100100 -16 2140 4X5GR ON8BB JO21 100100 -19 1979 <4X5GR> OE/DJ1MV 100130 -15 2140 4X5GR ON8BB JO21 100130 -19 1979 4X5GR OE/DJ1MV (x3) 100330 -16 2140 4X5GR ON8BB JO21
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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