KP4JRS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KP4JRS, decoded by SO8OO in southeastern Poland. 89 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-08-21.
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 89 FT8 messages attributed to KP4JRS as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 20 m (6%). Most decodes (100%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-08-21 03:23 UTC
Observed FT8 message patterns
- Attributed sample
- 89 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -9 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 79.
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 KP4JRS in decoded directed-looking exchanges:
Most frequent locator attributed to KP4JRS
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
- FK68 · 39 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,360 km (approx.)
- Last such locator decoded
- 2026-08-21 03:20 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 | KP4JRS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-26 20:25 | 40m | - / -23 | SM3LDP | -4 / - | 2 | Partial capture |
| 08-21 03:24 | 40m | - / - | US1VM | -7 / - | 6 | Partial capture |
| 08-21 03:18 | 40m | -4 / - | OJ0JR | - / - | 3 | Partial capture |
| 07-15 00:53 | 40m | - / -5 | SP2BRZ | -7 / - | 3 | ✓ Closing fragment |
| 07-15 00:50 | 40m | - / +1 | PA1PXL | -3 / - | 3 | ✓ Closing fragment |
| 07-15 00:48 | 40m | - / -10 | YO9PH | -18 / - | 5 | Partial capture |
| 07-07 02:46 | 20m | -20 / - | WM3PEN | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 005530 -10 2564 KP4JRS EA2DYB 73 005900 -8 2565 KP4JRS RN6MA -13 010600 -19 1934 KP4JRS YO9PH -12 031815 -3 2416 OJ0JR KP4JRS FK68 (x4) 032400 -8 2418 KP4JRS US1VM KN68 (x6) 202500 -4 811 KP4JRS SM3LDP -23 (x2)
UTC dB Audio Message 221715 -21 1965 EL2BG KP4JRS 73 221730 -18 1326 KP4JRS EA1FUB IN53 221815 -22 1964 TJ1GD/P KP4JRS FK68 222045 -21 1964 G8KHF KP4JRS FK68 024600 -22 2118 WM3PEN KP4JRS FK68 (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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