4X1KS — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving 4X1KS, decoded by SO8OO in southeastern Poland. 29 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-10-13.
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 29 FT8 messages attributed to 4X1KS as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 80 m (7%). Several six-hour UTC windows tied for the largest share (66%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-13 02:56 UTC
Observed FT8 message patterns
- Attributed sample
- 29 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -19 to -3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 11.
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 4X1KS 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 4X1KS
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 · 26 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,325 km (approx.)
- Last such locator decoded
- 2026-10-11 03:35 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 | 4X1KS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-19 03:56 | 40m | - / -7 | F4DIA | -10 / - | 2 | ✓ Closing fragment |
| 10-16 03:42 | 80m | - / - | EA3HMM | -2 / - | 4 | Partial capture |
| 10-16 03:42 | 80m | - / - | LZ2VQ | -9 / - | 3 | Partial capture |
| 10-16 03:36 | 40m | - / -11 | YL2EA | -14 / - | 3 | ✓ Closing fragment |
| 10-16 03:35 | 40m | - / - | UA3PHB | -21 / - | 2 | Partial capture |
| 10-16 03:34 | 40m | - / - | UT2AU | +1 / - | 5 | Partial capture |
| 10-16 03:33 | 40m | - / -15 | F5NBU | -5 / - | 4 | ✓ Closing fragment |
| 10-16 03:29 | 40m | - / -2 | UT7UJ | -9 / - | 2 | Partial capture |
| 10-13 03:05 | 80m | - / -16 | OK1HEH | +3 / - | 5 | Partial capture |
| 10-13 03:01 | 80m | - / -9 | UR3HC | +2 / - | 2 | Partial capture |
| 10-13 02:59 | 80m | - / -13 | DO5OT | +4 / - | 13 | Partial capture |
| 10-13 02:57 | 80m | - / - | DL1STG | +17 / - | 2 | Partial capture |
| 10-13 02:57 | 80m | - / - | DL9KM | 0 / - | 7 | Partial capture |
| 10-13 02:56 | 80m | -19 / -8 | CT7AUT | -7 / - | 2 | ✓ Closing observed |
| 10-11 04:00 | 40m | - / -9 | EA3EDU | -12 / - | 3 | ✓ Closing fragment |
| 10-11 03:59 | 40m | - / -13 | DK8HC/P | -10 / - | 3 | Partial capture |
| 10-11 03:59 | 40m | - / - | S52D | -20 / - | 2 | Partial capture |
| 10-11 03:47 | 80m | - / -18 | YO7CFD | +6 / - | 6 | ✓ Closing fragment |
| 10-11 03:46 | 80m | - / -16 | LZ2VQ | -10 / - | 3 | Partial capture |
| 10-11 03:43 | 80m | - / -20 | UX7QV | -22 / - | 2 | Partial capture |
| 10-11 03:43 | 80m | - / -18 | YO7CFD | +22 / - | 2 | Partial capture |
| 10-11 03:39 | 80m | - / -20 | YO7CFD | +10 / - | 2 | Partial capture |
| 10-11 03:38 | 80m | - / -15 | F1PBZ | -5 / - | 3 | Partial capture |
| 10-11 03:38 | 80m | - / -10 | SP5EXA | -14 / - | 5 | ✓ Closing fragment |
| 10-11 03:35 | 80m | - / -15 | LZ2VQ | -16 / - | 2 | Partial capture |
| 10-11 03:33 | 80m | - / -12 | CT7AUT | -6 / - | 4 | Partial capture |
| 09-30 22:56 | 40m | - / -1 | SV3AUW | -10 / - | 2 | ✓ Closing fragment |
| 08-24 04:11 | 20m | -11 / - | KD9PK | - / - | 7 | Partial capture |
| 08-24 04:09 | 20m | -8 / - | KE2UK | - / - | 4 | Partial capture |
| 08-24 04:08 | 20m | -5 / - | AD9GE | - / - | 2 | Partial capture |
| 08-24 04:07 | 20m | -6 / - | WD0BGZ | - / - | 2 | Partial capture |
| 08-23 03:34 | 20m | -2 / - | N3LAG | - / - | 2 | Partial capture |
| 08-22 19:03 | 20m | - / - | PD1ADA | -11 / - | 2 | Partial capture |
| 08-22 18:56 | 20m | - / - | ON8BB | -10 / - | 3 | Partial capture |
| 08-22 18:51 | 20m | - / -1 | DL6NAC | -16 / - | 2 | Partial capture |
| 08-22 18:37 | 20m | -17 / - | PD5MVH | - / - | 2 | Partial capture |
| 08-22 18:28 | 20m | -4 / - | BG2GWN | - / -6 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 030530 +5 1429 4X1KS DO5OT JO62 030600 -3 1427 4X1KS UR3HC RR73 030600 +3 1744 4X1KS OK1HEH -16 (x4) 034130 -10 1374 4X1KS IT9BYL RR73 034200 -11 1482 4X1KS LZ2VQ KN23 034200 -5 439 4X1KS EA3HMM JN00 034230 -8 1482 4X1KS LZ2VQ KN23 034230 +0 439 4X1KS EA3HMM JN00 034300 -7 1482 4X1KS LZ2VQ KN23 034300 +0 439 4X1KS EA3HMM JN00 (x2) 040330 -16 2278 4X1KS SV1EKI KM18
UTC dB Audio Message 033330 -7 1516 4X1KS F5NBU JN28 (x2) 033430 -3 1045 4X1KS UT2AU KO61 033430 -3 1516 4X1KS F5NBU 73 033500 +3 1045 4X1KS UT2AU KO61 (x2) 033530 -19 1970 4X1KS UA3PHB KO83 033600 -16 1766 4X1KS YL2EA KO26 033600 +2 747 4X1KS UT2AU KO61 033630 -23 1971 4X1KS UA3PHB KO83 033700 +0 833 4X1KS UT2AU KO61 033730 -13 1698 4X1KS YL2EA R-11 (x2) 035630 -8 1610 4X1KS F4DIA -07 (x2)
UTC dB Audio Message 040730 -7 1492 WD0BGZ 4X1KS KM71 (x2) 040830 -4 853 AD9GE 4X1KS KM71 (x2) 040930 -11 780 KE2UK 4X1KS KM71 (x4) 041130 -10 2321 KD9PK 4X1KS KM71 (x7)
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.
CW
CW history is temporarily unavailable.
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