VK4XU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving VK4XU, 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 2026-08-23.
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 VK4XU 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 -18 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
- -18 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.
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 VK4XU in decoded directed-looking exchanges:
Most frequent locator attributed to VK4XU
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
- QG62
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 15,216 km (approx.)
- Last such locator decoded
- 2026-08-23 04:41 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 | VK4XU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-29 23:08 | 20m | - / -22 | EA8ACW | -1 / - | 4 | ✓ Closing fragment |
| 08-29 23:04 | 20m | - / - | EA8CDG | -14 / - | 6 | Partial capture |
| 08-29 22:49 | 20m | - / - | EA8ACW | -14 / - | 8 | Partial capture |
| 08-23 04:43 | 20m | -18 / - | I8EJC | - / +3 | 2 | ✓ Closing fragment |
| 08-23 04:41 | 20m | -18 / -17 | 5Z4VJ | -12 / +1 | 5 | Partial capture |
| 08-02 05:38 | 20m | - / - | DK9ZQ | -11 / - | 3 | Partial capture |
| 08-02 05:30 | 20m | - / -17 | DL2MIJ | -10 / - | 2 | ✓ Closing fragment |
| 08-02 05:26 | 20m | - / -18 | YO4NT | -6 / - | 2 | ✓ Closing fragment |
| 08-02 05:23 | 20m | - / -16 | IT9CCB | -4 / - | 5 | ✓ Closing fragment |
| 08-02 05:22 | 20m | - / -16 | YO4NT | -16 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 225030 -14 2358 VK4XU EA8ACW IL28 (x5) 230430 -17 1468 VK4XU EA8CDG IL18 (x6) 230830 -8 2358 VK4XU EA8ACW IL28 (x4)
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