K5RK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving K5RK, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 80m, 60m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-09-21.
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 68 FT8 messages attributed to K5RK as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (91%), followed by 20 m (7%) and 60 m (1%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.
Overview
Bands
Last attributed message: 2026-09-21 00:54 UTC
Observed FT8 message patterns
- Attributed sample
- 68 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -24 to -12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 39, moderate (-15 to -9 dB) 29, 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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with K5RK 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 K5RK
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
- EL29 · 60 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 9,213 km (approx.)
- Last such locator decoded
- 2026-09-21 00:54 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 | K5RK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 00:49 | 80m | -18 / - | RI1FJZ | - / -23 | 7 | Partial capture |
| 09-21 00:38 | 80m | -18 / - | RI1FJZ | - / - | 10 | Partial capture |
| 09-05 01:24 | 80m | -16 / - | RI1FJL | - / - | 4 | Partial capture |
| 09-05 01:16 | 80m | -18 / - | RI1FJL | - / - | 2 | Partial capture |
| 09-05 00:42 | 80m | -17 / - | RI1FJL | - / - | 2 | Partial capture |
| 09-04 01:25 | 80m | -15 / - | RI1FJL | - / - | 2 | Partial capture |
| 09-04 01:06 | 80m | -16 / - | RI1FJL | - / - | 3 | Partial capture |
| 09-04 00:51 | 80m | - / - | PE0JBE | 0 / - | 3 | Partial capture |
| 09-03 00:48 | 80m | - / - | PE0JBE | -5 / - | 3 | Partial capture |
| 09-02 01:46 | 80m | -20 / - | RI1FJL | - / - | 4 | Partial capture |
| 09-02 01:28 | 80m | -14 / - | RI1FJL | - / - | 4 | Partial capture |
| 09-02 01:12 | 80m | -18 / - | RI1FJL | - / - | 12 | Partial capture |
| 09-02 00:56 | 80m | -12 / - | RI1FJL | - / - | 7 | Partial capture |
| 08-06 23:33 | 20m | - / - | SP6AXW | -15 / - | 3 | Partial capture |
| 08-06 23:29 | 20m | -18 / - | 7X5CY | - / -23 | 5 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 003915 -22 429 RI1FJZ K5RK EL29 (x15)
UTC dB Audio Message 232945 -16 2154 7X5CY K5RK EL29 (x4) 233300 -15 2261 K5RK SP6AXW JO80 233345 -17 2154 7X5CY K5RK 73 233400 -13 2262 K5RK SP6AXW JO80 (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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