4X1PB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 4X1PB, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-23.
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 6 FT8 messages attributed to 4X1PB as the transmitting token by decoded message structure across 1 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
- 6 messages
- Active dates
- 1 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) 0, moderate (-15 to -9 dB) 5, 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. 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 4X1PB in decoded directed-looking exchanges:
Most frequent locator attributed to 4X1PB
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
- KM71 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,325 km (approx.)
- Last such locator decoded
- 2026-06-23 18:52 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 | 4X1PB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-09 12:55 | 20m | - / -21 | IZ8EYN | -2 / - | 2 | Partial capture |
| 07-09 12:53 | 20m | - / -3 | SV1CQN | -20 / - | 2 | ✓ Closing fragment |
| 06-29 07:36 | 10m | - / -9 | Z30WWA | -20 / - | 2 | ✓ Closing fragment |
| 06-23 18:55 | 20m | -10 / - | SP9MOA | - / -12 | 2 | ✓ Closing fragment |
| 06-23 18:54 | 20m | -12 / - | EA3IZF | -17 / - | 2 | ✓ Closing observed |
| 06-23 18:52 | 20m | -8 / - | JH5AVM | - / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 184930 -13 2504 5Z4VJ 4X1PB KM71 185200 -7 2513 JH5AVM 4X1PB KM71 (x2) 185430 -12 2519 EA3IZF 4X1PB RR73 185445 -17 1576 4X1PB EA3IZF 73 185500 -10 2520 SP9MOA 4X1PB -12 (x2) 125300 -18 1931 4X1PB SV1CQN -03 (x2) 125530 -2 865 4X1PB IZ8EYN -21 (x2)
UTC dB Audio Message 073630 -17 1772 4X1PB Z30WWA -09 (x2)
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