SV4RRK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SV4RRK, decoded by SO8OO in southeastern Poland. 660 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-06-14.
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 660 FT8 messages attributed to SV4RRK as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (42%), followed by 10 m (24%) and 80 m (22%). Most decodes (58%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.
Overview
Bands
Last attributed message: 2026-06-14 18:18 UTC
Observed FT8 message patterns
- Attributed sample
- 660 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -19 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 183, moderate (-15 to -9 dB) 324, strong (≥ -8 dB) 153.
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 SV4RRK 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 SV4RRK
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
- KM09 · 469 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,162 km (approx.)
- Last such locator decoded
- 2026-06-14 18:18 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 | SV4RRK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 06-14 18:16 | 20m | -13 / - | EP2AES | - / - | 5 | Partial capture |
| 06-13 19:15 | 40m | -13 / - | DS5USH | - / -17 | 16 | ✓ Closing fragment |
| 06-13 19:09 | 40m | -12 / -11 | IU0ODL | -3 / -8 | 5 | ✓ Full exchange observed |
| 06-13 19:06 | 40m | -15 / -13 | LX1RFJ | -10 / - | 3 | ✓ Closing observed |
| 06-13 19:00 | 40m | -13 / -15 | LB6LK | -9 / -13 | 4 | ✓ Full exchange observed |
| 06-13 18:50 | 60m | -13 / +4 | 4L7T | -8 / -13 | 6 | ✓ Full exchange observed |
| 06-13 16:53 | 10m | -12 / - | PS8CW | - / - | 2 | Partial capture |
| 06-13 11:57 | 10m | -17 / - | EW2ZC | - / - | 3 | Partial capture |
| 06-13 11:52 | 10m | -10 / - | AP2TN | - / - | 2 | Partial capture |
| 06-13 11:43 | 10m | -16 / - | AP2TN | - / - | 7 | Partial capture |
| 06-13 11:40 | 10m | -11 / -8 | 7Q3CM | -4 / -5 | 7 | ✓ Full exchange observed |
| 06-13 10:24 | 10m | -12 / -9 | 7Q3CM | -14 / - | 7 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 181630 -12 2045 EP2AES SV4RRK KM09 (x5)
UTC dB Audio Message 191545 -16 1913 DS5USH SV4RRK KM09 (x15)
UTC dB Audio Message 185015 -14 1909 4L7T SV4RRK KM09 (x2) 185100 -9 2488 SV4RRK 4L7T +04 185115 -13 1908 4L7T SV4RRK R-13 185130 -8 2487 SV4RRK 4L7T RR73 185145 -13 1908 4L7T SV4RRK 73
UTC dB Audio Message 114345 -13 1949 AP2TN SV4RRK KM09 (x8) 115745 -11 1950 EW2ZC SV4RRK KM09 (x3) 165300 -12 1949 PS8CW SV4RRK KM09 (x3) 182630 -21 1951 F4HTA SV4RRK R-20
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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