4X6KJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 4X6KJ, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-08 and 2026-07-31.
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 18 FT8 messages attributed to 4X6KJ 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 (100%). In this small sample, the estimated median decoder S/N was -22 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 18 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -22 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, 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 4X6KJ 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 4X6KJ
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 · 10 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,224 km (approx.)
- Last such locator decoded
- 2026-07-31 16:43 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 | 4X6KJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-09 09:01 | 20m | - / -11 | DL6RAR | -14 / - | 4 | Partial capture |
| 08-06 07:17 | 20m | - / - | DB7GE | -19 / - | 4 | Partial capture |
| 08-06 07:13 | 20m | - / -7 | R7OV | -20 / - | 4 | Partial capture |
| 08-06 07:07 | 20m | - / - | R7OV | -16 / - | 3 | Partial capture |
| 07-31 16:44 | 20m | - / -20 | DH1FA | -8 / - | 2 | Partial capture |
| 07-31 16:44 | 20m | - / -8 | R4HEA | -18 / - | 2 | Partial capture |
| 07-31 16:41 | 20m | -22 / -4 | IZ2OAR | -7 / - | 5 | ✓ Closing observed |
| 07-31 16:36 | 20m | - / -17 | MM0JTV | -23 / - | 2 | Partial capture |
| 07-19 19:00 | 20m | - / - | YO6QDY | -8 / - | 3 | Partial capture |
| 07-19 18:59 | 20m | - / - | DL1R | +2 / - | 6 | Partial capture |
| 07-19 18:56 | 20m | - / 0 | YO6PNM | -8 / - | 6 | ✓ Closing fragment |
| 07-19 18:41 | 20m | - / - | CR7BRV | +2 / - | 2 | Partial capture |
| 07-19 18:39 | 20m | - / - | F1PPH | -10 / - | 7 | Partial capture |
| 07-19 18:33 | 40m | - / -13 | LZ3HG | -18 / - | 2 | ✓ Closing fragment |
| 07-10 17:08 | 20m | - / - | EA1KBT | -12 / - | 2 | Partial capture |
| 07-10 17:08 | 20m | - / - | RA6OY | +5 / - | 4 | Partial capture |
| 07-10 08:57 | 20m | - / - | UR4QWW | -17 / - | 3 | Partial capture |
| 07-09 16:41 | 20m | -20 / - | PY7XC | - / - | 8 | Partial capture |
| 07-09 16:37 | 20m | - / -17 | PY7XC | -24 / - | 2 | Partial capture |
| 07-08 19:31 | 20m | - / - | EA7GHD | -22 / - | 8 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 070830 -18 1588 4X6KJ R7OV KN87 (x6) 071730 -21 2172 4X6KJ DB7GE JN39 (x4) 072100 +1 539 4X6KJ DL1EMV JO31 090130 -14 1690 4X6KJ DL6RAR -11 (x4)
UTC dB Audio Message 183330 -19 1469 4X6KJ LZ3HG -13 (x2)
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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