ON4PM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON4PM, decoded by SO8OO in southeastern Poland. 72 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-09 and 2026-07-17.
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 72 FT8 messages attributed to ON4PM as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (100%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -4 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 72 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -15 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 51.
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 ON4PM in decoded directed-looking exchanges:
Most frequent locator attributed to ON4PM
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 · 46 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,194 km (approx.)
- Last such locator decoded
- 2026-07-17 16:16 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 | ON4PM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-17 16:14 | 20m | -14 / - | C91RU | - / -12 | 6 | ✓ Closing fragment |
| 07-10 13:52 | 20m | -7 / - | YH7KS | - / - | 14 | Partial capture |
| 07-10 13:46 | 20m | -6 / - | YH3AO | - / -17 | 5 | Partial capture |
| 07-10 13:41 | 20m | 0 / - | YH3AO | - / - | 4 | Partial capture |
| 07-10 13:33 | 20m | -3 / -4 | YO4NT | -8 / -12 | 4 | Partial capture |
| 07-10 13:32 | 20m | +2 / - | BH8NSC | - / -10 | 2 | ✓ Closing fragment |
| 07-10 13:28 | 20m | 0 / - | YH2BG | - / -18 | 7 | ✓ Closing fragment |
| 07-10 13:22 | 20m | -1 / - | RU0LL | - / -24 | 4 | ✓ Closing fragment |
| 07-10 13:19 | 20m | +1 / - | YH8AW | - / -3 | 4 | ✓ Closing fragment |
| 07-10 13:14 | 20m | -3 / - | YH8RN | - / - | 5 | Partial capture |
| 07-10 13:11 | 20m | -2 / - | YH8AW | - / - | 6 | Partial capture |
| 07-10 13:05 | 20m | -5 / - | YH8RN | - / -8 | 9 | Partial capture |
| 07-09 19:32 | 20m | - / -10 | EA1IOK | 0 / - | 3 | ✓ Closing fragment |
| 07-09 18:49 | 20m | -12 / - | R9AL | - / -16 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 135545 -4 1068 YH7KS ON4PM JO20 (x9) 161415 -12 1122 C91RU ON4PM JO20 (x6)
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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