IZ4OSH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IZ4OSH, decoded by SO8OO in southeastern Poland. 60 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-07 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 60 FT8 messages attributed to IZ4OSH as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (52%), followed by 20 m (48%). The busiest six-hour window was 06:00-12:00 UTC, containing 45% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-08-21 08:58 UTC
Observed FT8 message patterns
- Attributed sample
- 60 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -18 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 38.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with IZ4OSH in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to IZ4OSH
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
- JN54 · 40 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-08-21 08:58 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 | IZ4OSH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-21 08:57 | 20m | -18 / - | VK6DU | - / - | 2 | Partial capture |
| 08-20 14:51 | 20m | -2 / - | BA3NZ | - / -15 | 4 | ✓ Closing fragment |
| 08-18 11:40 | 20m | -10 / - | JH2KVP | - / - | 2 | Partial capture |
| 08-06 17:12 | 20m | - / -8 | TA2ED | -20 / - | 2 | ✓ Closing fragment |
| 07-30 09:56 | 10m | -8 / - | YE1AJE | - / - | 2 | Partial capture |
| 07-11 08:49 | 20m | -6 / - | <...> | - / 0 | 4 | Partial capture |
| 07-08 09:26 | 20m | - / - | ON4KBU | -13 / - | 5 | Partial capture |
| 07-06 05:39 | 20m | - / - | UY5AX | -17 / - | 7 | Partial capture |
| 07-02 15:00 | 10m | -10 / - | 8A1WWA | - / -14 | 4 | ✓ Closing fragment |
| 06-30 23:11 | 20m | - / 0 | SV5BYP | -16 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 085045 -6 1696 <...> IZ4OSH JN54 (x4) 171230 -21 1788 IZ4OSH TA2ED -08 (x2) 114000 -12 1146 JH2KVP IZ4OSH JN54 (x2) 145115 -7 2228 BA3NZ IZ4OSH JN54 (x4) 161100 -7 1210 CQ IZ4OSH JN54 085730 -19 1946 VK6DU IZ4OSH JN54 (x2)
UTC dB Audio Message 200100 -17 2442 IZ4OSH G4DBW JO01 224400 -20 2137 ZL4LV IZ4OSH JN54 150045 -10 2139 8A1WWA IZ4OSH JN54 (x4) 072430 -11 1714 JM3UGA IZ4OSH JN54 095630 -8 2148 YE1AJE IZ4OSH JN54 (x2)
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.
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