N4KM — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving N4KM, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-08-24.
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 28 FT8 messages attributed to N4KM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (79%), followed by 20 m (21%). In this small sample, the estimated median decoder S/N was -20 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-24 22:08 UTC
Observed FT8 message patterns
- Attributed sample
- 28 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -20 dB
- Estimated 10th-90th percentile
- -21 to -16 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 2, 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 N4KM in decoded directed-looking exchanges:
Most frequent locator attributed to N4KM
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
- EL98 · 24 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,464 km (approx.)
- Last such locator decoded
- 2026-08-24 22:08 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 | N4KM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-24 22:08 | 20m | - / -16 | CE3RKW | -16 / - | 2 | Partial capture |
| 08-24 21:59 | 20m | -16 / -9 | DL1R | -10 / -7 | 3 | ✓ Full exchange observed |
| 08-24 21:43 | 20m | - / -11 | IQ4JO | +10 / - | 6 | ✓ Closing fragment |
| 08-24 21:30 | 20m | - / - | DL1UDO | -20 / - | 2 | Partial capture |
| 08-24 21:23 | 20m | - / -8 | DK9ZQ | -6 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 214415 +12 2331 N4KM IQ4JO R-11 (x5) 214830 -18 3082 CQ N4KM EL98 a1 215815 -10 3082 N4KM EA8BYO -18 215830 -15 3082 CQ N4KM EL98 215930 -16 3082 DL1R N4KM -07 220015 -14 2658 N4KM DL1R R-09 (x2) 220515 -16 691 N4KM EA4DM -18 220800 -15 3082 CQ N4KM EL98 a1 220815 -14 1578 N4KM CE3RKW -16 (x2)
CW
No CW receptions recorded for this callsign in the last 30 days.
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