IU5LRH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU5LRH, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-18.
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 19 FT8 messages attributed to IU5LRH as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 19 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -16 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 8, 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 IU5LRH in decoded directed-looking exchanges:
Most frequent locator attributed to IU5LRH
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
- JN53 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-07-18 22:02 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 | IU5LRH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-18 22:03 | 20m | -13 / - | M7SZB | - / -5 | 3 | ✓ Closing fragment |
| 07-18 21:53 | 20m | -18 / - | LU9BML | - / -9 | 4 | Partial capture |
| 07-18 21:51 | 20m | -18 / - | SP9VEY | - / +1 | 2 | ✓ Closing fragment |
| 07-18 21:48 | 20m | - / -12 | TA2ED | -14 / - | 2 | ✓ Closing fragment |
| 07-18 21:46 | 20m | - / +5 | DF8TN | -11 / - | 2 | Partial capture |
| 07-18 21:41 | 20m | - / - | DF8TN | -8 / - | 5 | Partial capture |
| 07-18 21:36 | 20m | -14 / -9 | DL2FX | -18 / - | 3 | ✓ Closing observed |
| 07-18 21:34 | 20m | - / -11 | SP6FCQ | -3 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 215130 -19 1294 SP9VEY IU5LRH +01 (x2) 215300 -18 1294 LU9BML IU5LRH -09 (x4) 215630 -16 1293 JF2HPA IU5LRH RR73 215800 -14 1293 CQ IU5LRH JN53 (x3) 220145 -11 2760 IU5LRH JF1UVJ PM95 220230 -16 1293 CQ IU5LRH JN53 220300 -13 1293 M7SZB IU5LRH R-05 (x3)
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