RK0SC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RK0SC, decoded by SO8OO in southeastern Poland. 585 FT8 messages attributed to this token as transmitter, on 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-07-29.
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 585 FT8 messages attributed to RK0SC as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). The busiest six-hour window was 22:00-04:00 UTC, containing 50% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.8 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 585 messages
- Active dates
- 15 UTC dates
- Estimated median S/N
- -10.8 dB
- Estimated 10th-90th percentile
- -16 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 86, moderate (-15 to -9 dB) 306, strong (≥ -8 dB) 193.
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 RK0SC 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 RK0SC
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
- OO26 · 440 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 5,242 km (approx.)
- Last such locator decoded
- 2026-07-29 21:24 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 | RK0SC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 20:49 | 80m | - / -24 | UA1CEI | +12 / - | 3 | ✓ Closing fragment |
| 09-19 20:47 | 80m | - / - | S57BTI | -5 / - | 2 | Partial capture |
| 09-19 20:44 | 80m | - / - | RA3YDA | 0 / - | 2 | Partial capture |
| 09-19 20:43 | 80m | - / -19 | RM5F | -6 / - | 2 | ✓ Closing fragment |
| 09-19 20:38 | 80m | - / -18 | DK3UA | +9 / - | 6 | ✓ Closing fragment |
| 09-19 20:27 | 80m | - / -19 | R2HM | +10 / - | 4 | ✓ Closing fragment |
| 09-19 20:21 | 80m | - / -23 | UC6D | +10 / - | 2 | ✓ Closing fragment |
| 09-19 20:05 | 80m | - / -20 | I1RJP | +13 / - | 3 | ✓ Closing fragment |
| 09-19 19:58 | 80m | - / - | DD6WF | +10 / - | 2 | Partial capture |
| 09-19 19:58 | 80m | - / - | I1RJP | +2 / - | 8 | Partial capture |
| 09-19 19:51 | 80m | - / - | UA4UAR | -4 / - | 5 | Partial capture |
| 09-19 19:45 | 80m | - / - | UA1CEI | +12 / - | 2 | Partial capture |
| 09-19 19:35 | 80m | - / - | UA1CEI | +9 / - | 9 | Partial capture |
| 09-19 18:42 | 80m | - / -12 | R2EC | -2 / - | 9 | ✓ Closing fragment |
| 09-19 18:14 | 80m | - / -20 | ON4IQ | +9 / - | 2 | ✓ Closing fragment |
| 09-19 18:05 | 80m | - / -23 | R4RJ | -10 / - | 3 | ✓ Closing fragment |
| 09-19 17:54 | 80m | - / -25 | R7CD | +10 / - | 2 | ✓ Closing fragment |
| 09-19 17:52 | 80m | - / - | DK1BN | +3 / - | 7 | Partial capture |
| 09-19 17:48 | 80m | - / - | IZ1BII | -5 / - | 7 | Partial capture |
| 09-19 16:31 | 80m | - / -21 | R6ZEJ | -3 / - | 5 | Partial capture |
| 09-19 16:31 | 80m | - / - | RM5F | -10 / - | 2 | Partial capture |
| 09-19 16:27 | 80m | - / - | RM5F | -1 / - | 2 | Partial capture |
| 09-19 16:22 | 80m | - / -13 | RN3TT | -12 / - | 2 | ✓ Closing fragment |
| 09-19 16:17 | 80m | - / -10 | RW3LL | +15 / - | 3 | ✓ Closing fragment |
| 09-19 16:11 | 80m | - / -15 | OH2ZZ | -5 / - | 3 | ✓ Closing fragment |
| 09-19 16:09 | 80m | - / -20 | EU7A | 0 / - | 4 | ✓ Closing fragment |
| 09-19 15:55 | 80m | - / -19 | RC3D | +10 / - | 2 | ✓ Closing fragment |
| 09-19 15:53 | 80m | - / -18 | RC1TF | -3 / - | 2 | Partial capture |
| 09-19 15:53 | 80m | - / -15 | UA3EDQ | +7 / - | 3 | ✓ Closing fragment |
| 09-19 15:47 | 80m | - / -21 | RK4PR | -19 / - | 2 | ✓ Closing fragment |
| 09-19 15:32 | 80m | - / -7 | R7LV | +9 / - | 3 | ✓ Closing fragment |
| 09-19 15:27 | 80m | - / - | UA1OIZ | -7 / - | 2 | Partial capture |
| 09-19 15:22 | 80m | - / -9 | RA7T | +2 / - | 3 | ✓ Closing fragment |
| 09-19 15:22 | 80m | - / - | YO9IJP | +2 / - | 10 | Partial capture |
| 09-19 14:20 | 80m | - / -4 | RA3DA | -11 / - | 3 | ✓ Closing fragment |
| 09-19 14:18 | 80m | - / - | RY3D | -12 / - | 2 | ✓ Closing fragment |
| 09-17 14:10 | 40m | - / -14 | RK6MC | -1 / - | 2 | ✓ Closing fragment |
| 09-16 22:26 | 80m | - / -13 | RA3WY | -7 / - | 3 | ✓ Closing fragment |
| 09-16 22:20 | 80m | - / -21 | R4FV | 0 / - | 3 | ✓ Closing fragment |
| 09-16 22:03 | 80m | - / - | RO2X | +4 / - | 2 | ✓ Closing fragment |
| 09-16 21:46 | 80m | - / -26 | RA3RDN | -3 / - | 3 | ✓ Closing fragment |
| 09-16 21:42 | 80m | - / - | R5DT | +4 / - | 2 | Partial capture |
| 09-16 21:37 | 80m | - / - | PSE30M | +17 / - | 2 | Partial capture |
| 09-16 21:34 | 80m | - / -18 | IZ0COC | +9 / - | 3 | ✓ Closing fragment |
| 09-16 21:30 | 80m | - / -19 | IK0HBN | +11 / - | 5 | ✓ Closing fragment |
| 09-16 21:27 | 80m | - / - | UB3ANV | -10 / - | 2 | Partial capture |
| 09-16 20:52 | 80m | - / -16 | UA6JQ | -5 / - | 2 | ✓ Closing fragment |
| 09-14 22:13 | 80m | - / -17 | R7KQ | +11 / - | 3 | ✓ Closing fragment |
| 09-14 22:12 | 80m | - / -19 | RA7KW | +18 / - | 2 | ✓ Closing fragment |
| 09-14 22:10 | 80m | - / -21 | RU6K | +11 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 203815 +9 2550 RK0SC DK3UA JO64 (x6) 204345 -8 1641 RK0SC RM5F R-19 (x2) 204415 +2 2789 RK0SC RA3YDA KO62 (x2) 204715 -5 1047 RK0SC S57BTI JN75 (x2) 204915 +9 2791 RK0SC UA1CEI KP50 (x3)
UTC dB Audio Message 144130 +4 930 RK0SC RA3AJT -12 (x2) 135830 -15 722 RK0SC R3ZCE KO80 140345 -13 1685 RK0SC R1943OD -13 143615 -16 935 RK0SC RK4PR RR73 144930 -4 2212 RK0SC RA3DFQ -15 (x3) 145100 -5 2212 RK0SC TNX 73 145115 -8 851 RK0SC RW3PI -16 (x2) 004545 -24 2036 RK0SC RO6G -17 141045 -2 1041 RK0SC RK6MC -14 (x2) 141915 -16 735 RK0SC R4CQ LO31
UTC dB Audio Message 222245 -10 769 RK0SC DL1EDR JO41 (x4) 223215 -13 769 RK0SC PA3ANZ JO22 (x4) 233815 -15 2543 RK0SC RA3DA KO95 (x5) 004545 -9 768 RK0SC DG5PW JO30 (x2)
UTC dB Audio Message 094715 +9 721 RK0SC S59MA JN76 (x15)
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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