IU7RAO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU7RAO, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-10-03.
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 IU7RAO as the transmitting token by decoded message structure across 1 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 -2 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 15 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -2 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 15.
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 IU7RAO in decoded directed-looking exchanges:
Most frequent locator attributed to IU7RAO
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
- JN71 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,075 km (approx.)
- Last such locator decoded
- 2026-10-03 18:43 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 | IU7RAO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-03 18:42 | 40m | +4 / - | 3D2USU | - / - | 3 | Partial capture |
| 10-03 17:49 | 40m | - / +9 | E70SZ | -4 / - | 2 | ✓ Closing fragment |
| 10-03 17:47 | 40m | -2 / - | F5OYA/P | - / -1 | 5 | ✓ Closing fragment |
| 10-03 17:45 | 40m | -5 / - | IU4PPL | - / -4 | 2 | ✓ Closing fragment |
| 10-03 17:43 | 40m | -6 / - | IW6CAE | -10 / +3 | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 174515 -2 2039 CQ IU7RAO 174545 -7 2039 IU4PPL IU7RAO -04 (x2) 174645 -4 2039 CQ IU7RAO (x2) 174745 -3 2039 F5OYA/P IU7RAO -01 (x3) 174930 -5 2039 IU7RAO E70SZ R+09 174945 -1 2039 F5OYA/P IU7RAO RR73 175000 -2 2039 IU7RAO E70SZ 73 175015 -2 2039 F5OYA/P IU7RAO 73 184215 +5 348 3D2USU IU7RAO JN71 (x3)
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