IU5RDK — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving IU5RDK, decoded by SO8OO in southeastern Poland. 14 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-10-29.
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 14 FT8 messages attributed to IU5RDK as the transmitting token by decoded message structure across 4 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 -13 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 14 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -13 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) 10, strong (≥ -8 dB) 3.
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 IU5RDK in decoded directed-looking exchanges:
Most frequent locator attributed to IU5RDK
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 · 14 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-10-29 05:26 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 | IU5RDK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-29 05:23 | 40m | -14 / - | 6W/IK2HKT | - / - | 5 | Partial capture |
| 10-29 05:20 | 40m | -12 / - | F1LPT/P | - / - | 2 | Partial capture |
| 10-29 05:19 | 40m | -14 / - | YU65AEC | - / - | 2 | Partial capture |
| 10-14 20:34 | 80m | - / -13 | HA1BF | +8 / - | 2 | ✓ Closing fragment |
| 09-30 02:09 | 40m | 0 / - | W1HQL | - / - | 3 | Partial capture |
| 09-02 21:31 | 60m | - / - | F5RAV | -8 / - | 4 | Partial capture |
| 09-02 21:30 | 60m | - / -13 | DL6ZAJ | -1 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192715 -15 592 EG5DX IU5RDK JN53 035630 -9 594 K0PT IU5RDK JN53 020915 +1 595 W1HQL IU5RDK JN53 (x3) 042100 +4 540 IU5RDK RR73; RZ3BP <...> +00 051945 -14 594 YU65AEC IU5RDK JN53 (x2) 052045 -9 595 F1LPT/P IU5RDK JN53 (x2) 052345 -14 595 <6W/IK2HKT> IU5RDK JN53 (x5)
UTC dB Audio Message 203400 +11 1121 IU5RDK HA1BF -13 (x2)
UTC dB Audio Message 213000 +0 1108 IU5RDK DL6ZAJ JO40 (x2) 213100 -6 1830 IU5RDK F5RAV JN09 213100 +0 1108 IU5RDK DL6ZAJ 73 213130 -9 1830 IU5RDK F5RAV JN09 (x3)
UTC dB Audio Message 193500 -5 525 IU5RDK RI1FJL -19
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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