SG5Z — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SG5Z, decoded by SO8OO in southeastern Poland. 62 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-29 and 2026-09-16.
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 62 FT8 messages attributed to SG5Z as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (97%), followed by 160 m (3%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (95%); the estimated median was +5 dB.
Overview
Bands
Last attributed message: 2026-09-16 17:36 UTC
Observed FT8 message patterns
- Attributed sample
- 62 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -3 to +10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 59.
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 SG5Z in decoded directed-looking exchanges:
Most frequent locator attributed to SG5Z
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
- JO89 · 52 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,106 km (approx.)
- Last such locator decoded
- 2026-09-16 17:36 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 | SG5Z S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 22:41 | 80m | +6 / -2 | RZ9O | -7 / -3 | 4 | Partial capture |
| 09-03 22:40 | 80m | - / - | EA3RO | -21 / - | 4 | Partial capture |
| 09-03 22:39 | 80m | +8 / - | VU2NKS | - / -12 | 2 | ✓ Closing fragment |
| 09-03 22:39 | 80m | +8 / -2 | UA3GX | +4 / +10 | 7 | ✓ Full exchange observed |
| 09-03 22:39 | 80m | - / - | UA4FKT | +13 / - | 2 | Partial capture |
| 09-03 22:36 | 80m | +4 / - | 9V1YC | -21 / -9 | 6 | ✓ Closing observed |
| 09-03 22:22 | 80m | +7 / +6 | RI1FJL | -8 / -9 | 15 | Partial capture |
| 09-03 22:00 | 80m | +3 / - | RI1FJL | - / - | 33 | Partial capture |
| 08-29 23:42 | 160m | -15 / - | LX7I | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 224030 +3 1851 SG5Z UA3GX KO92 224030 -19 1655 SG5Z EA3RO JN11 224045 +9 1851 UA3GX SG5Z +10 224100 +5 1851 SG5Z UA3GX R-02 224100 -20 1655 SG5Z EA3RO JN11 224115 +6 1851 UA3GX SG5Z RR73 224130 +5 1851 SG5Z UA3GX 73 224130 -5 1912 SG5Z RZ9O -02 224130 -22 1656 SG5Z EA3RO JN11 224145 +5 1032 YD1FRU SG5Z -14 224200 -9 1912 SG5Z RZ9O -02 224215 +5 1032 RZ9O SG5Z R-03 224230 -24 1656 SG5Z EA3RO JN11 224245 +8 1912 RZ9O SG5Z R-03 173615 -15 1186 RI1FJZ SG5Z JO89
UTC dB Audio Message 234230 -10 2035 LX7I SG5Z JO89 (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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