ON7CA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON7CA, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-09-12.
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 6 FT8 messages attributed to ON7CA as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (83%), followed by 40 m (17%). In this small sample, the estimated median decoder S/N was -23 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-12 16:07 UTC
Observed FT8 message patterns
- Attributed sample
- 6 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -23 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 3, 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 ON7CA in decoded directed-looking exchanges:
Most frequent locator attributed to ON7CA
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
- JO20 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,194 km (approx.)
- Last such locator decoded
- 2026-07-16 10:18 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 | ON7CA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-12 16:04 | 40m | - / -1 | DL6EBV | -9 / - | 3 | ✓ Closing fragment |
| 09-12 16:00 | 40m | - / - | DJ0MAB | -2 / - | 3 | Partial capture |
| 09-12 15:58 | 40m | - / -5 | DL8BBK | -15 / - | 3 | Partial capture |
| 07-16 10:16 | 20m | - / - | DL3MIB | -4 / - | 7 | Partial capture |
| 07-11 15:24 | 20m | - / - | EA5JYL | -18 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 155800 -14 236 ON7CA DL8BBK -05 (x3) 160030 -10 1539 ON7CA DJ0MAB JN49 (x2) 160130 -21 1086 ON7CA M8UKQ -09 160130 +0 1539 ON7CA DJ0MAB JN49 160415 -8 794 ON7CA DL6EBV -01 (x3) 160700 -13 1540 G4SPE ON7CA 73 160745 -1 1536 ON7CA 9A4ZM JN86
UTC dB Audio Message 152415 -19 1096 ON7CA EA5JYL IM98 (x2) 101300 -23 1575 RN1TV ON7CA JO20 101430 -23 1575 EA5KDD ON7CA JO20 101615 -10 1107 ON7CA DL3MIB JN57 (x4) 101800 -23 1576 CR7BRV ON7CA JO20 101815 -6 1107 ON7CA DL3MIB JN57 (x3)
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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