ON4FI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON4FI, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 60m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-09.
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 27 FT8 messages attributed to ON4FI as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (100%). In this small sample, the estimated median decoder S/N was 0 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 27 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- 0 dB
- Estimated 10th-90th percentile
- -5 to +2 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 27.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with ON4FI in decoded directed-looking exchanges:
Most frequent locator attributed to ON4FI
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 · 19 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,194 km (approx.)
- Last such locator decoded
- 2026-09-09 21:27 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 | ON4FI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-09 21:30 | 60m | 0 / - | SP5JMA | - / +1 | 2 | ✓ Closing fragment |
| 09-09 21:26 | 60m | 0 / - | 4X1YA | -7 / - | 3 | ✓ Closing observed |
| 09-09 21:22 | 60m | +2 / - | 4X5EF | - / - | 4 | Partial capture |
| 09-09 21:17 | 60m | 0 / - | 4X5EF | - / - | 7 | Partial capture |
| 09-09 21:05 | 60m | -3 / - | VU2NKS | - / - | 5 | Partial capture |
| 09-09 21:03 | 60m | -2 / -1 | EA1IOK | -11 / +3 | 5 | ✓ Full exchange observed |
| 09-09 21:02 | 60m | -3 / +9 | DL1SRS | -8 / - | 4 | ✓ Full exchange observed |
| 09-09 21:01 | 60m | -1 / - | 4U1A | - / 0 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 211745 -2 1097 4X5EF ON4FI JO20 (x10) 212630 -1 2358 4X1YA ON4FI JO20 (x2) 212845 -7 1432 ON4FI 4X1YA RR73 213030 +0 2359 SP5JMA ON4FI +01 (x2)
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