IU7QBU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU7QBU, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-01 and 2026-10-02.
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 20 FT8 messages attributed to IU7QBU as the transmitting token by decoded message structure across 2 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 -14 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 20 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -16 to -11 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 0.
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 IU7QBU in decoded directed-looking exchanges:
Most frequent locator attributed to IU7QBU
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
- JN80 · 17 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,114 km (approx.)
- Last such locator decoded
- 2026-10-02 07:08 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 | IU7QBU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-02 07:08 | 40m | -14 / +3 | IQ0AAX | -14 / - | 4 | ✓ Closing observed |
| 10-02 06:41 | 40m | - / - | IU8RFW | -10 / - | 4 | Partial capture |
| 10-02 06:38 | 40m | -12 / +5 | IQ0AAX | -12 / - | 4 | ✓ Closing observed |
| 10-02 06:37 | 40m | - / - | ON4KEB | -5 / - | 5 | Partial capture |
| 10-02 06:34 | 40m | -13 / - | IQ0YA | - / -7 | 5 | ✓ Closing fragment |
| 10-01 14:28 | 40m | -14 / - | IQ0YA | - / - | 8 | Partial capture |
| 10-01 12:03 | 40m | -16 / - | IQ2AAH | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 063845 -11 926 IQ0AAX IU7QBU JN80 063900 -6 926 IU7QBU ON4KEB JO20 (x2) 064015 -14 926 IQ0AAX IU7QBU JN80 064030 -12 877 IU7QBU IQ0AAX +05 (x2) 064130 -6 438 IU7QBU IU8RFW JN70 (x4) 070845 -14 926 IQ0AAX IU7QBU JN80 070900 -14 877 IU7QBU IQ0AAX +03 (x2) 070945 -14 926 IQ0AAX IU7QBU 73 071030 -5 513 IU7QBU G0JEI -20
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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