ON4AVV — 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 ON4AVV, decoded by SO8OO in southeastern Poland. 152 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-23 and 2026-11-01.
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 152 FT8 messages attributed to ON4AVV as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (13%) and 80 m (7%). Most decodes (87%) fell within the six-hour window 08:00-14:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +2 dB.
Overview
Bands
Last attributed message: 2026-11-01 10:40 UTC
Observed FT8 message patterns
- Attributed sample
- 152 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- +2 dB
- Estimated 10th-90th percentile
- -9 to +10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 135.
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 ON4AVV 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 ON4AVV
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
- JO11 · 62 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,331 km (approx.)
- Last such locator decoded
- 2026-10-31 09:20 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 | ON4AVV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-01 10:40 | 40m | -16 / - | HA1BF | -13 / -5 | 2 | ✓ Closing observed |
| 11-01 10:38 | 40m | -17 / +9 | DK7ZT | -16 / - | 3 | ✓ Closing observed |
| 11-01 10:36 | 40m | - / -20 | LY3PW | 0 / - | 4 | Partial capture |
| 10-31 09:22 | 40m | -14 / -4 | DL6ZOG | -6 / -9 | 5 | Partial capture |
| 10-31 09:20 | 40m | -16 / - | SQ9ZAY | +6 / - | 2 | ✓ Closing observed |
| 10-31 09:09 | 40m | - / -6 | PA7ZZ | -14 / - | 2 | ✓ Closing fragment |
| 10-31 09:04 | 40m | - / - | PA7ZZ | -16 / - | 5 | Partial capture |
| 10-31 09:03 | 40m | -15 / -10 | DL9KM | -6 / -5 | 4 | Partial capture |
| 10-29 16:34 | 40m | - / -12 | IU3QYU | -9 / - | 2 | Partial capture |
| 10-25 09:42 | 40m | - / -6 | SP1ZMO | -8 / - | 5 | Partial capture |
| 10-25 09:36 | 40m | - / - | DJ1TU | -12 / - | 4 | Partial capture |
| 10-25 09:36 | 40m | - / +6 | DK9NP | -8 / - | 2 | Partial capture |
| 10-25 09:36 | 40m | - / - | SP1ZMO | -12 / - | 4 | Partial capture |
| 10-25 09:34 | 40m | - / - | DH2NJS | -14 / - | 3 | Partial capture |
| 10-25 09:32 | 40m | - / +2 | DL8WEM | +2 / - | 2 | ✓ Closing fragment |
| 10-25 09:28 | 40m | - / -7 | IK4JPP | -13 / - | 5 | ✓ Closing fragment |
| 10-25 09:11 | 40m | - / -2 | DL6ZOG | -10 / - | 6 | ✓ Closing fragment |
| 10-17 11:26 | 40m | - / - | DG9SEH | -12 / - | 2 | Partial capture |
| 10-17 11:25 | 40m | - / -1 | DJ0MAB | -13 / - | 2 | ✓ Closing fragment |
| 10-17 11:18 | 40m | - / - | DJ0MAB | -16 / - | 2 | Partial capture |
| 10-17 11:18 | 40m | - / -11 | DK7ZT | -6 / - | 3 | Partial capture |
| 10-17 11:07 | 40m | - / +8 | DK7ZT | -10 / - | 2 | Partial capture |
| 10-17 11:07 | 40m | - / +7 | PD0IFI | -7 / - | 4 | Partial capture |
| 09-13 12:15 | 40m | - / - | HG8LXL | -1 / - | 3 | Partial capture |
| 08-30 23:17 | 20m | - / - | SP1ZMO | -3 / - | 4 | Partial capture |
| 08-30 13:44 | 20m | +6 / - | VO1IV | - / - | 6 | Partial capture |
| 08-30 13:32 | 20m | +2 / - | OE8PIT | - / -8 | 4 | Partial capture |
| 08-30 13:29 | 20m | +3 / - | LA1SNA | - / -11 | 7 | Partial capture |
| 08-30 13:25 | 20m | -3 / - | UA3NFG | - / -2 | 7 | Partial capture |
| 08-30 13:19 | 20m | 0 / - | S57CT | - / +9 | 5 | ✓ Closing fragment |
| 08-30 13:15 | 20m | - / - | OE9GWV | +2 / - | 5 | Partial capture |
| 08-30 13:14 | 20m | -1 / - | SP3IPA | - / -25 | 2 | ✓ Closing fragment |
| 08-30 13:08 | 20m | -1 / - | US2YW | - / - | 7 | ✓ Closing fragment |
| 08-30 12:52 | 20m | +4 / -10 | IQ4JO | +2 / - | 5 | ✓ Full exchange observed |
| 08-30 12:48 | 20m | +10 / - | 4O4DB | - / +8 | 3 | ✓ Closing fragment |
| 08-30 12:47 | 20m | +8 / - | YU7DES | - / +1 | 2 | ✓ Closing fragment |
| 08-30 12:45 | 20m | +6 / - | IN3LHF | - / +8 | 3 | Partial capture |
| 08-30 12:42 | 20m | +5 / - | 9A4ZM | - / -3 | 2 | ✓ Closing fragment |
| 08-30 12:40 | 20m | +6 / - | SP6AXW | - / -16 | 2 | ✓ Closing fragment |
| 08-30 12:40 | 20m | +8 / -12 | OH3OJ | -10 / -7 | 4 | ✓ Full exchange observed |
| 08-30 12:39 | 20m | +8 / - | UT7UJ | - / +5 | 2 | ✓ Closing fragment |
| 08-30 12:33 | 20m | +6 / - | IQ4JO | -1 / -1 | 7 | Partial capture |
| 08-30 12:24 | 20m | -7 / - | UT7UJ | - / +4 | 2 | Partial capture |
| 08-30 12:21 | 20m | +2 / - | 9A4ZM | - / +3 | 5 | Partial capture |
| 08-30 12:20 | 20m | +12 / - | OE8RPK | - / -11 | 2 | ✓ Closing fragment |
| 08-30 09:07 | 20m | +3 / -9 | DF8TN | -7 / - | 14 | Partial capture |
| 08-30 09:07 | 20m | - / - | DH5BM | -4 / - | 3 | Partial capture |
| 08-30 09:06 | 20m | - / - | F4BYA | +13 / - | 3 | Partial capture |
| 08-23 08:22 | 20m | 0 / - | G4JEB | - / -13 | 8 | Partial capture |
| 08-23 08:19 | 20m | -2 / - | EA1IOK | -12 / - | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 092130 -13 939 ON1DGN ON4AVV R-06 092230 -14 939 DL6ZOG ON4AVV -09 092245 -10 2038 ON4AVV DL6ZOG R-04 (x4) 103630 +2 1059 ON4AVV LY3PW -20 (x4) 103830 -17 1907 ON4AVV DK7ZT +09 (x2) 103915 -17 938 DK7ZT ON4AVV 73 104045 -16 937 HA1BF ON4AVV R-05 104100 -13 1390 ON4AVV HA1BF RR73
UTC dB Audio Message 133215 +8 954 LA1SNA ON4AVV -11 133245 +4 954 OE8PIT ON4AVV -08 (x4) 134445 +9 953 VO1IV ON4AVV JO11 (x6) 231730 -5 1579 ON4AVV SP1ZMO JO73 (x4)
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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