IU7SNW — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU7SNW, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-08-21.
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 IU7SNW as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). In this small sample, the estimated median decoder S/N was -1 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
- -1 dB
- Estimated 10th-90th percentile
- -7 to +4 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 20.
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 IU7SNW in decoded directed-looking exchanges:
Most frequent locator attributed to IU7SNW
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
- JM99 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,181 km (approx.)
- Last such locator decoded
- 2026-08-21 08:14 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 | IU7SNW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-21 08:18 | 10m | 0 / - | DL3NGN | - / -11 | 4 | Partial capture |
| 08-21 08:17 | 10m | 0 / - | DN9AD | - / -14 | 2 | ✓ Closing fragment |
| 08-21 08:16 | 10m | +3 / - | OK2XCG | - / -8 | 3 | ✓ Closing fragment |
| 08-21 08:15 | 10m | +4 / - | DG2SAT | - / -8 | 2 | ✓ Closing fragment |
| 08-21 08:06 | 10m | -4 / - | HS0ZOY | - / - | 5 | Partial capture |
| 07-22 18:29 | 20m | - / - | EA2BHE | 0 / - | 2 | Partial capture |
| 07-22 18:26 | 40m | - / -8 | IQ4JO | +3 / - | 3 | ✓ Closing fragment |
| 07-22 18:22 | 40m | - / -7 | DH0GBC | -19 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 080745 -2 401 HS0ZOY IU7SNW JM99 (x3) 081445 +4 403 CQ IU7SNW JM99 081515 +4 403 DG2SAT IU7SNW -08 (x2) 081615 +3 403 OK2XCG IU7SNW -08 (x3) 081745 +0 403 DN9AD IU7SNW -14 (x2) 081845 +4 403 DL3NGN IU7SNW -11 (x4)
UTC dB Audio Message 182930 +4 375 IU7SNW EA2BHE IN83 (x2)
UTC dB Audio Message 182230 -18 1334 IU7SNW DH0GBC -07 (x3) 182600 +5 2805 IU7SNW IQ4JO JN63 (x3)
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