F4JNW — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4JNW, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-09-08.
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 28 FT8 messages attributed to F4JNW as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 10 m (21%) and 80 m (14%). Several six-hour UTC windows tied for the largest share (79%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-09-08 04:58 UTC
Observed FT8 message patterns
- Attributed sample
- 28 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -24 to -6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 8.
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 F4JNW in decoded directed-looking exchanges:
Most frequent locator attributed to F4JNW
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
- JN18 · 14 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,370 km (approx.)
- Last such locator decoded
- 2026-09-08 04:52 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 | F4JNW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-08 04:57 | 80m | -24 / -15 | DK7ZT | +7 / -9 | 2 | Partial capture |
| 09-08 04:54 | 80m | - / -14 | DO8JB | -3 / - | 3 | ✓ Closing fragment |
| 09-08 04:51 | 80m | -21 / - | W1VT | - / -15 | 3 | Partial capture |
| 09-08 04:44 | 40m | -18 / - | 5N0YEN | - / - | 6 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 045130 -24 968 W1VT F4JNW JN18 (x3) 045415 -6 969 F4JNW DO8JB JO32 (x3) 045715 +7 1115 F4JNW DK7ZT -15 045800 -24 968 DK7ZT F4JNW R-09
UTC dB Audio Message 044430 -22 1296 5N0YEN F4JNW JN18 (x6)
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