IV3JAP — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IV3JAP, decoded by SO8OO in southeastern Poland. 9 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-19.
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 9 FT8 messages attributed to IV3JAP 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 -12 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 9 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -12 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 2.
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 IV3JAP in decoded directed-looking exchanges:
Most frequent locator attributed to IV3JAP
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
- JN65 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 821 km (approx.)
- Last such locator decoded
- 2026-06-07 19:08 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 | IV3JAP S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 13:49 | 40m | - / - | DL9KM | -6 / - | 5 | Partial capture |
| 09-20 13:48 | 40m | - / -4 | HA8AP | -14 / - | 3 | ✓ Closing fragment |
| 09-19 15:03 | 40m | -14 / -16 | DJ0MAB | -6 / -1 | 5 | ✓ Full exchange observed |
| 09-19 15:03 | 40m | - / - | PE1NPS | -18 / - | 3 | Partial capture |
| 09-19 15:02 | 40m | -10 / - | IU4PPL | - / +1 | 2 | ✓ Closing fragment |
| 09-19 15:00 | 40m | -14 / - | DJ0MAB | - / -5 | 2 | Partial capture |
| 09-19 15:00 | 40m | - / - | 9A4ZM | -5 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 150400 -20 1791 IV3JAP PE1NPS JO22 150400 -2 1292 IV3JAP DJ0MAB JN49 150415 -13 1291 DJ0MAB IV3JAP -01 150430 -16 1791 IV3JAP PE1NPS JO22 150430 -4 1292 IV3JAP DJ0MAB R-16 (x2) 134830 -14 1940 IV3JAP HA8AP -04 (x2) 134900 -8 1708 IV3JAP DL9KM JN68 134930 -16 1940 IV3JAP HA8AP RR73 134930 -5 1708 IV3JAP DL9KM JN68 (x2) 135000 -1 1931 IV3JAP 9A4ZM JN86 135030 -5 1708 IV3JAP DL9KM JN68 (x2)
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