KI5ZYU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KI5ZYU, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-27.
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 13 FT8 messages attributed to KI5ZYU 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 -17 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 13 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -17 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) 2, 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 KI5ZYU in decoded directed-looking exchanges:
Most frequent locator attributed to KI5ZYU
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
- EM51 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,692 km (approx.)
- Last such locator decoded
- 2026-07-27 02:57 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 | KI5ZYU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 04:55 | 80m | - / - | EA1B | -7 / - | 3 | Partial capture |
| 09-10 05:05 | 40m | - / - | IZ2QPP | -16 / - | 4 | Partial capture |
| 09-10 05:02 | 40m | - / -18 | YO6LM | -9 / - | 3 | ✓ Closing fragment |
| 09-10 05:01 | 40m | - / -13 | ON4AOI | +8 / - | 2 | ✓ Closing fragment |
| 09-10 04:20 | 80m | - / +2 | KE4EB | -20 / - | 3 | ✓ Closing fragment |
| 07-27 02:57 | 20m | -15 / - | Z33F | - / -11 | 3 | ✓ Closing fragment |
| 07-27 02:50 | 20m | -18 / - | RD3FY | - / -5 | 2 | ✓ Closing fragment |
| 07-27 02:47 | 20m | -17 / - | EP5TJS | - / -6 | 4 | Partial capture |
| 07-27 02:28 | 20m | -18 / - | EX8ABR | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 042015 -24 1233 KI5ZYU KE4EB FM17 (x3) 045545 -5 2123 KI5ZYU EA1B IN83 (x3)
UTC dB Audio Message 050145 +11 1534 KI5ZYU ON4AOI -13 (x2) 050245 -8 2535 KI5ZYU YO6LM KN25 (x3) 050545 -16 1477 KI5ZYU IZ2QPP JN46 (x4)
UTC dB Audio Message 022845 -18 1405 EX8ABR KI5ZYU EM51 (x3) 024745 -18 1405 EP5TJS KI5ZYU EM51 (x4) 025045 -17 1405 RD3FY KI5ZYU -05 (x2) 025215 -19 1405 N8PFK KI5ZYU RR73 025730 -14 1405 Z33F KI5ZYU EM51 (x3)
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