ON4KVI — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving ON4KVI, decoded by SO8OO in southeastern Poland. 280 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 28 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-10-16.
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 280 FT8 messages attributed to ON4KVI as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (83%), followed by 10 m (17%). Most decodes (58%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-10-16 20:42 UTC
Observed FT8 message patterns
- Attributed sample
- 280 messages
- Active dates
- 28 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -13 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 103, strong (≥ -8 dB) 165.
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 ON4KVI 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 ON4KVI
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
- JO20 · 193 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,194 km (approx.)
- Last such locator decoded
- 2026-10-16 20:42 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 | ON4KVI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 20:09 | 40m | - / -8 | EX7CQ | +8 / - | 2 | ✓ Closing fragment |
| 10-21 12:17 | 10m | - / -18 | <...> | -3 / - | 2 | Partial capture |
| 10-17 04:33 | 40m | - / -10 | SV8ZI | -14 / - | 2 | Partial capture |
| 10-16 20:09 | 40m | +4 / - | TA3BJK | - / - | 2 | Partial capture |
| 10-16 20:01 | 40m | -3 / - | F1ONW | - / - | 2 | Partial capture |
| 10-16 19:59 | 40m | +1 / - | LY7T | - / +2 | 3 | ✓ Closing fragment |
| 10-16 19:56 | 40m | -2 / - | G0XLX | - / -17 | 4 | ✓ Closing fragment |
| 10-16 19:52 | 40m | 0 / - | TA3F | - / - | 5 | Partial capture |
| 10-16 19:48 | 40m | 0 / -10 | EI8GS | -2 / +2 | 7 | ✓ Full exchange observed |
| 10-16 19:43 | 40m | 0 / -20 | SV1SSL | +4 / -9 | 7 | ✓ Full exchange observed |
| 10-16 19:40 | 40m | -4 / - | SM6ONT | - / 0 | 3 | Partial capture |
| 10-16 19:38 | 40m | -3 / -6 | UN0GY | -10 / -5 | 5 | ✓ Full exchange observed |
| 10-16 19:32 | 40m | 0 / - | EB1EXS | - / - | 5 | Partial capture |
| 10-16 19:28 | 40m | -2 / -9 | 9A7BB | -19 / - | 6 | Partial capture |
| 10-16 18:53 | 40m | -6 / - | OZ7CRS | - / -6 | 4 | Partial capture |
| 10-16 18:22 | 40m | -10 / - | EU4U | - / +2 | 4 | Partial capture |
| 10-16 17:52 | 40m | -8 / -7 | UA1ACO | 0 / -7 | 4 | ✓ Full exchange observed |
| 10-13 18:40 | 40m | - / -9 | G8KHF | -12 / - | 2 | ✓ Closing fragment |
| 10-13 18:37 | 40m | -9 / - | SQ1MNC | -10 / +1 | 3 | ✓ Closing observed |
| 10-13 18:36 | 40m | - / - | G3RCW | -20 / - | 2 | Partial capture |
| 10-13 18:36 | 40m | - / -14 | IZ6BYS | -10 / - | 2 | Partial capture |
| 10-13 18:33 | 40m | -10 / - | YL3FW | - / -6 | 2 | Partial capture |
| 10-13 15:05 | 40m | - / - | OE8DSK | -6 / - | 3 | Partial capture |
| 10-13 14:55 | 40m | - / - | DK8MT | -19 / - | 3 | Partial capture |
| 10-13 14:28 | 40m | - / -18 | ON7YC | -13 / - | 3 | Partial capture |
| 10-13 14:22 | 40m | - / - | HB9ELE | +10 / - | 2 | ✓ Closing fragment |
| 10-13 14:01 | 40m | - / -13 | G0RVY | -11 / - | 2 | ✓ Closing fragment |
| 10-13 12:47 | 40m | - / -14 | SP2ADI | +4 / - | 15 | Partial capture |
| 10-12 19:49 | 40m | 0 / - | UN3P | - / - | 5 | Partial capture |
| 10-12 19:41 | 40m | -3 / - | LA8MGA | - / -4 | 9 | Partial capture |
| 10-12 19:37 | 40m | -8 / -15 | SV2AEL | -14 / -7 | 4 | ✓ Full exchange observed |
| 10-12 19:20 | 40m | -3 / - | SA3LEN | - / -1 | 3 | ✓ Closing fragment |
| 10-12 19:15 | 40m | -2 / +4 | SA3LEN | -3 / - | 4 | ✓ Closing observed |
| 10-12 19:08 | 40m | -6 / - | SM4GOJ | - / -15 | 5 | Partial capture |
| 10-09 22:05 | 40m | -9 / - | SV2FNT | - / - | 3 | Partial capture |
| 10-09 21:31 | 40m | -11 / +2 | SM6KTO | -17 / -1 | 5 | ✓ Full exchange observed |
| 10-09 21:29 | 40m | -10 / - | YO3AEP | - / +1 | 2 | ✓ Closing fragment |
| 10-02 14:05 | 40m | -11 / - | II5GG | -8 / -2 | 2 | ✓ Closing observed |
| 10-02 14:01 | 40m | -10 / - | G7FTN | - / - | 2 | Partial capture |
| 10-01 10:41 | 40m | - / - | IK2ZJR | -12 / - | 12 | Partial capture |
| 10-01 09:31 | 40m | -15 / -13 | SP4BB | -1 / -12 | 6 | ✓ Full exchange observed |
| 09-28 11:35 | 40m | - / -5 | 9A3MRN | -11 / - | 3 | ✓ Closing fragment |
| 09-21 13:20 | 40m | -9 / -10 | HA1BF | 0 / - | 3 | ✓ Closing observed |
| 09-14 20:26 | 40m | -9 / - | G0WTZ | - / -9 | 5 | ✓ Closing fragment |
| 09-14 13:19 | 40m | -11 / -2 | OT4R | -20 / - | 2 | Partial capture |
| 09-13 19:28 | 40m | -2 / - | F4MTU | +5 / - | 3 | ✓ Closing observed |
| 09-12 19:32 | 40m | -9 / - | CN8NS | - / - | 13 | Partial capture |
| 09-12 19:27 | 40m | -9 / - | CN8NS | - / - | 4 | Partial capture |
| 09-12 19:22 | 40m | -8 / - | CN8NS | - / - | 5 | Partial capture |
| 09-12 19:17 | 40m | -11 / - | CN8NS | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 195930 +1 669 LY7T ON4KVI R+02 (x2) 200130 -3 669 F1ONW ON4KVI JO20 (x2) 200915 +5 668 TA3BJK ON4KVI JO20 (x2) 201445 -5 668 VK7AC ON4KVI JO20 203400 -18 669 PY2BS ON4KVI JO20 (x2) 212830 +0 1950 ON4KVI 5B4AMM RR73 043345 -14 711 ON4KVI SV8ZI -10 (x2) 200930 +3 496 ON4KVI EX7CQ -08 (x2) 202915 -9 1047 ON4KVI LZ2PAJ RR73
UTC dB Audio Message 171400 -12 467 CS7AVD ON4KVI JO20 (x3) 093745 -8 465 HG5OGI ON4KVI JO20 (x2) 094100 -10 466 OH6FSO ON4KVI 73 094345 -10 466 EA5QS ON4KVI JO20 094715 -11 466 EX7CQ ON4KVI JO20 (x2) 145045 -10 631 OK1UOZ ON4KVI R-01 (x2) 103530 -2 862 ON4KVI TL8GD -03 121730 -3 2869 ON4KVI <...> -18 (x2) 121830 -2 2869 ON4KVI RR73; LZ2EV <...> -10
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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