DK4LK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DK4LK, decoded by SO8OO in southeastern Poland. 44 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-08-20.
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 44 FT8 messages attributed to DK4LK as the transmitting token by decoded message structure across 2 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 +5 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 44 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -5 to +10 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 40.
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 DK4LK in decoded directed-looking exchanges:
Most frequent locator attributed to DK4LK
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
- JN58 · 26 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 799 km (approx.)
- Last such locator decoded
- 2026-08-20 19:32 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 | DK4LK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-20 19:23 | 20m | +4 / -13 | D2IM | -4 / +2 | 21 | ✓ Full exchange observed |
| 08-20 19:21 | 20m | +5 / - | BG7BVI | - / -14 | 3 | ✓ Closing fragment |
| 08-20 19:19 | 20m | +8 / - | 7Z1GC | - / -1 | 3 | ✓ Closing fragment |
| 08-20 19:17 | 20m | 0 / - | <...> | - / -25 | 3 | Partial capture |
| 08-20 19:13 | 20m | +6 / - | 9A3TGY | - / +7 | 5 | ✓ Closing fragment |
| 08-20 19:10 | 20m | +4 / - | UR3HC | - / -1 | 3 | ✓ Closing fragment |
| 08-20 19:02 | 20m | +6 / -8 | BA3NZ | -20 / 0 | 4 | ✓ Full exchange observed |
| 08-20 18:59 | 20m | +4 / - | XU7O | - / +8 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192745 +10 2105 D2IM DK4LK JN58 (x9) 193230 -4 2377 DK4LK D2IM -13 193245 -1 2104 D2IM DK4LK R+02 (x2) 194415 -3 932 DK4LK MM0TBH RR73 202245 -10 1421 DK4LK PD4RJ -17 202415 -7 422 DK4LK DK7ZT +16
UTC dB Audio Message 190400 -19 2258 DK4LK <...> -01 192415 -21 1989 DK4LK DK8EE JO41
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