N3CB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving N3CB, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-08-30.
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 21 FT8 messages attributed to N3CB 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 (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 21 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -11 to -5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 10.
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 N3CB in decoded directed-looking exchanges:
Most frequent locator attributed to N3CB
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
- FN20 · 9 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,111 km (approx.)
- Last such locator decoded
- 2026-08-30 23:05 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 | N3CB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-27 22:34 | 20m | -8 / - | DL9KM | - / -10 | 2 | Partial capture |
| 08-27 22:30 | 20m | -11 / - | IZ0GRR | - / -1 | 3 | ✓ Closing fragment |
| 08-27 22:29 | 20m | - / -13 | HB9TIH | -6 / - | 3 | ✓ Closing fragment |
| 08-27 22:28 | 20m | - / - | DL5MKR | -14 / - | 3 | Partial capture |
| 08-26 21:47 | 20m | -8 / - | UT2PC | - / -5 | 4 | ✓ Closing fragment |
| 08-26 21:45 | 20m | -7 / +4 | 9K2YM | +9 / +6 | 6 | ✓ Full exchange observed |
| 08-26 21:40 | 20m | - / -4 | PA0ARR | -20 / - | 2 | ✓ Closing fragment |
| 08-26 21:39 | 20m | - / - | HB9JNM | +1 / - | 6 | Partial capture |
| 08-26 21:39 | 20m | - / - | MI7RDK | +2 / - | 2 | Partial capture |
| 08-26 21:38 | 20m | -5 / -5 | S57BTI | -8 / -18 | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 222900 -10 1904 N3CB HB9TIH JN36 222900 -19 1627 N3CB DL5MKR JO60 222930 -7 1905 N3CB HB9TIH R-13 (x2) 223045 -10 2614 IZ0GRR N3CB RR73 223115 -14 2613 CQ N3CB FN20 a1 223130 +4 678 N3CB F1PBZ -16 223145 -12 2612 IZ0GRR N3CB -01 (x2) 223415 -9 2610 DL9KM N3CB -10 (x2) 225600 -10 2553 4X1UF N3CB 73 230045 -9 2660 <...> N3CB FN20 (x2) 230545 -11 2659 EA3SD N3CB FN20
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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