OH5COI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OH5COI, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-31 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 10 FT8 messages attributed to OH5COI as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 80 m (20%). In this small sample, the estimated median decoder S/N was -14 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-16 19:32 UTC
Observed FT8 message patterns
- Attributed sample
- 10 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -14 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 6, 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 OH5COI in decoded directed-looking exchanges:
Most frequent locator attributed to OH5COI
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
- KP30 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,219 km (approx.)
- Last such locator decoded
- 2026-09-16 19:32 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 | OH5COI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-31 17:07 | 20m | - / - | OM2ZZ | -12 / - | 6 | Partial capture |
| 08-31 13:19 | 20m | - / -20 | G0LUH | -10 / - | 2 | Partial capture |
| 08-31 11:13 | 20m | -11 / - | BG0FQU | - / - | 3 | Partial capture |
| 08-31 10:53 | 20m | - / +1 | RA4FEQ | +2 / - | 2 | Partial capture |
| 08-31 10:51 | 20m | -16 / -14 | OK3MB | -8 / -6 | 4 | ✓ Full exchange observed |
| 08-31 10:40 | 20m | -12 / -19 | M9LCB | -12 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192145 -18 935 RI1FJZ OH5COI KP30 193245 -24 935 M8FQT OH5COI KP30
UTC dB Audio Message 105245 -14 1004 OK3MB OH5COI 73 105300 +4 765 OH5COI RA4FEQ +01 (x2) 111345 -13 1004 BG0FQU OH5COI KP30 (x3) 131930 -12 1492 OH5COI G0LUH -20 (x2) 170345 -2 433 OH5COI DK5ED -07 170715 -11 3044 OH5COI OM2ZZ JN88 (x6)
UTC dB Audio Message 172345 -15 1553 OH5COI OZ7DR RR73
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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