OZ5ACI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OZ5ACI, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-08-27.
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 34 FT8 messages attributed to OZ5ACI as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (85%), followed by 20 m (15%). Several six-hour UTC windows tied for the largest share (91%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.
Overview
Bands
Last attributed message: 2026-08-27 05:55 UTC
Observed FT8 message patterns
- Attributed sample
- 34 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -21 to -10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 2.
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 OZ5ACI 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 OZ5ACI
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
- JO66 · 29 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 934 km (approx.)
- Last such locator decoded
- 2026-08-27 05:55 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 | OZ5ACI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-27 05:58 | 40m | - / - | F5HNQ | -14 / - | 3 | Partial capture |
| 08-27 05:57 | 40m | - / - | F1IQH | -16 / - | 2 | Partial capture |
| 08-27 05:56 | 40m | - / - | DF6WE | -6 / - | 2 | Partial capture |
| 08-20 06:22 | 20m | -11 / - | ZL3DMH | - / - | 2 | Partial capture |
| 07-23 19:07 | 40m | -14 / - | ZL3DMH | - / - | 3 | Partial capture |
| 07-23 18:50 | 40m | -22 / - | ZL3DMH | - / - | 2 | Partial capture |
| 07-22 20:20 | 40m | -19 / - | UN8DSW | - / -4 | 3 | ✓ Closing fragment |
| 07-22 19:36 | 40m | -15 / - | ZL3DMH | - / - | 4 | Partial capture |
| 07-22 19:31 | 40m | -14 / - | ZL3DMH | - / - | 4 | Partial capture |
| 07-20 20:26 | 40m | -18 / - | ZL3DMH | - / -16 | 7 | Partial capture |
| 07-20 20:26 | 40m | - / - | RV3GZ | -10 / - | 2 | Partial capture |
| 07-20 20:25 | 40m | - / - | OZ9GA | -10 / - | 5 | Partial capture |
| 07-20 20:25 | 40m | - / - | HA7TM | 0 / - | 3 | Partial capture |
| 07-20 20:25 | 40m | - / - | SQ9CXH | -10 / - | 5 | Partial capture |
| 07-20 19:54 | 20m | -7 / - | ZF2OO | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 185145 -21 1537 ZL3DMH OZ5ACI JO66 (x4) 055545 -11 1239 CQ OZ5ACI JO66 055600 -3 1239 OZ5ACI SP7TF -09 055630 -6 2546 OZ5ACI DF6WE JO31 055700 -15 1239 OZ5ACI F1IQH JN27 055700 -6 2546 OZ5ACI DF6WE JO31 055730 -16 1239 OZ5ACI F1IQH JN27 055800 -14 1834 OZ5ACI F5HNQ IN98 (x2) 055830 -5 2736 OZ5ACI F1PBZ -09 055900 -14 1518 OZ5ACI RC3DN KO95 055900 -11 1833 OZ5ACI F5HNQ IN98
UTC dB Audio Message 195415 -10 2580 ZF2OO OZ5ACI JO66 (x3) 062030 -23 2120 OZ5ACI F5HNQ IN98 062245 -10 2422 ZL3DMH OZ5ACI JO66 (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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee