RK0SWA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RK0SWA, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-31.
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 10 FT8 messages attributed to RK0SWA 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
- 10 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) 7, moderate (-15 to -9 dB) 3, 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 RK0SWA in decoded directed-looking exchanges:
Most frequent locator attributed to RK0SWA
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
- OO22 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 5,470 km (approx.)
- Last such locator decoded
- 2026-08-31 03:55 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 | RK0SWA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-31 04:07 | 20m | - / - | RK4CH | -2 / - | 9 | Partial capture |
| 08-31 04:02 | 20m | - / -8 | RA4HG | -6 / - | 21 | Partial capture |
| 08-31 04:00 | 20m | -15 / - | EX8ABQ | -16 / - | 3 | ✓ Closing observed |
| 08-31 04:00 | 20m | - / - | RU4AJ | +7 / - | 4 | ✓ Closing fragment |
| 08-31 03:57 | 20m | -18 / -25 | RK6J | +1 / -20 | 7 | ✓ Full exchange observed |
| 08-31 03:55 | 20m | -16 / - | UA9QFF | - / -15 | 3 | ✓ Closing fragment |
| 08-31 03:53 | 20m | -20 / - | R1AI | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 040900 -9 2064 RK0SWA RK4CH LO32 040900 -16 1980 RK0SWA RA4HG -08 040930 -9 2064 RK0SWA RK4CH LO32 040930 -10 1980 RK0SWA RA4HG -09 041000 -4 2064 RK0SWA RK4CH LO32 041000 -13 1980 RK0SWA RA4HG -09 041030 -1 2064 RK0SWA RK4CH LO32 (x2) 041100 -11 1979 RK0SWA RA4HG -09 (x2) 041230 -20 2066 RK0SWA RV9CD MO06 041330 -7 2111 RK0SWA RA4HG -10 (x4)
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