IU1FNJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU1FNJ, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-27 and 2026-09-29.
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 15 FT8 messages attributed to IU1FNJ 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 (100%). In this small sample, the estimated median decoder S/N was -13 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 15 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -13 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 1.
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 IU1FNJ in decoded directed-looking exchanges:
Most frequent locator attributed to IU1FNJ
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
- JN44 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,137 km (approx.)
- Last such locator decoded
- 2026-09-29 19:42 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 | IU1FNJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-28 13:18 | 40m | - / -1 | DK7ZT | -15 / - | 3 | Partial capture |
| 09-28 13:17 | 40m | -20 / -3 | DG3YEV | 0 / +9 | 4 | ✓ Full exchange observed |
| 09-27 21:19 | 40m | -14 / - | TA7MMI | - / - | 3 | Partial capture |
| 09-27 21:16 | 40m | -12 / - | EA1IOK | - / -5 | 2 | ✓ Closing fragment |
| 09-27 21:12 | 40m | -14 / -9 | M6XZD | -6 / -10 | 5 | ✓ Full exchange observed |
| 09-27 21:11 | 40m | - / - | I1RJP | +14 / - | 2 | Partial capture |
| 09-27 21:09 | 40m | -12 / -16 | DB4JW/QRP | 0 / -5 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 211345 -17 846 M6XZD IU1FNJ 73 211615 -12 1431 EA1IOK IU1FNJ -05 (x2) 211900 -14 2030 TA7MMI IU1FNJ JN44 (x3) 212330 -10 241 4X1UF IU1FNJ JN44 131745 +0 2117 IU1FNJ DG3YEV -03 131800 -20 2117 DG3YEV IU1FNJ R+09 131815 -1 2117 IU1FNJ DG3YEV RR73 131830 -20 2117 DG3YEV IU1FNJ 73 131845 -13 1907 IU1FNJ DK7ZT -01 (x3) 194230 -4 1093 M1DBW IU1FNJ JN44
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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