IU5KYZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU5KYZ, decoded by SO8OO in southeastern Poland. 44 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-11.
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 44 FT8 messages attributed to IU5KYZ 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 -8 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 44 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -12 to -2 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 26.
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 IU5KYZ in decoded directed-looking exchanges:
Most frequent locator attributed to IU5KYZ
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 · 36 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-09-11 21:24 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 | IU5KYZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-11 21:22 | 40m | -8 / - | D44TWO | - / - | 2 | Partial capture |
| 09-11 21:21 | 40m | -7 / - | HZ1TT | - / - | 3 | Partial capture |
| 09-11 21:17 | 40m | -10 / - | EW8AAC | - / - | 2 | Partial capture |
| 09-11 21:13 | 40m | - / -16 | CT7AXN | -8 / - | 2 | ✓ Closing fragment |
| 09-11 20:58 | 40m | -4 / - | V51WH | - / - | 4 | Partial capture |
| 09-11 20:55 | 40m | -6 / - | DG6NI | - / - | 2 | Partial capture |
| 09-11 20:49 | 40m | -4 / - | HZ1TT | - / - | 10 | Partial capture |
| 09-11 20:44 | 40m | -5 / - | UR4QWW | - / -4 | 3 | ✓ Closing fragment |
| 09-11 19:58 | 40m | -10 / - | HZ1TT | - / - | 2 | Partial capture |
| 09-11 19:55 | 40m | -14 / - | UA3VVA | - / -13 | 3 | ✓ Closing fragment |
| 09-11 19:52 | 40m | -11 / - | EC3A | - / -6 | 2 | Partial capture |
| 09-11 19:50 | 40m | - / - | DK8HC | 0 / - | 5 | Partial capture |
| 09-11 19:50 | 40m | - / -9 | F1PBZ | -5 / - | 2 | Partial capture |
| 09-11 19:45 | 40m | +2 / - | R3KLE | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205830 -3 1746 V51WH IU5KYZ JN53 (x3) 210230 -4 1746 IU5TRG IU5KYZ JN53 211345 -7 1540 IU5KYZ CT7AXN -16 (x2) 211545 -13 1729 HZ1TT IU5KYZ JN53 211745 -10 1725 EW8AAC IU5KYZ JN53 (x2) 212115 -4 479 HZ1TT IU5KYZ JN53 212215 -4 479 D44TWO IU5KYZ JN53 (x2) 212315 -8 479 HZ1TT IU5KYZ JN53 (x2) 212415 -12 479 EW8AAC IU5KYZ JN53
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