TK4LS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving TK4LS, decoded by SO8OO in southeastern Poland. 4 FT8 messages attributed to this token as transmitter, on 10m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-05.
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 4 FT8 messages attributed to TK4LS as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 10 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.
Overview
Observed FT8 message patterns
- Attributed sample
- 4 messages
- Active dates
- 1 UTC dates
- S/N summary
- Too few decodes
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
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).
Most frequent locator attributed to TK4LS
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
- JN42 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,282 km (approx.)
- Last such locator decoded
- 2026-07-05 08:11 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 | TK4LS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-21 08:48 | 20m | - / - | 9A4ZM | -2 / - | 3 | Partial capture |
| 07-05 08:14 | 10m | - / -11 | DO3SK | -3 / - | 8 | Partial capture |
| 07-05 08:12 | 10m | - / - | DN9BLN | -4 / - | 4 | Partial capture |
| 07-05 08:08 | 10m | -20 / - | RC9WC | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 084800 -2 480 TK4LS 9A4ZM JN86 (x3)
UTC dB Audio Message 080830 -18 1825 RC9WC TK4LS JN42 081130 -9 497 <...> TK4LS JN42 081245 -5 2796 TK4LS DN9BLN JO62 (x2) 081400 -8 497 <...> TK4LS R-03 081415 -2 2795 TK4LS DN9BLN JO62 081445 -4 642 TK4LS DO3SK R-11 (x2) 081545 -1 2795 TK4LS DN9BLN JO62 081615 -4 641 TK4LS DO3SK R-11 (x6)
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