K4MS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving K4MS, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-09-22.
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 18 FT8 messages attributed to K4MS as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 80 m (44%). In this small sample, the estimated median decoder S/N was -10 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-22 01:50 UTC
Observed FT8 message patterns
- Attributed sample
- 18 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -10 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 9.
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 K4MS in decoded directed-looking exchanges:
Most frequent locator attributed to K4MS
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
- EM93 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,042 km (approx.)
- Last such locator decoded
- 2026-09-22 01:50 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 | K4MS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-22 01:38 | 80m | - / - | EW8CW | +1 / - | 4 | Partial capture |
| 09-22 01:37 | 80m | - / - | 9A5E | +9 / - | 5 | Partial capture |
| 09-22 01:37 | 80m | -18 / -15 | F1PBZ | +16 / -17 | 4 | ✓ Full exchange observed |
| 09-22 01:28 | 80m | - / - | EA1IOK | -16 / - | 2 | Partial capture |
| 09-16 01:11 | 80m | -23 / -9 | HB9CXZ | +10 / -12 | 5 | ✓ Full exchange observed |
| 09-16 01:10 | 80m | - / - | DL4GCJ | +11 / - | 3 | Partial capture |
| 09-16 01:08 | 80m | -24 / - | 8R1TM | - / - | 4 | ✓ Closing fragment |
| 08-22 02:13 | 40m | -1 / - | 8Z1IT | - / -20 | 10 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 012830 -18 590 K4MS EA1IOK IN62 013745 +15 2705 K4MS F1PBZ -15 013745 +10 2132 K4MS 9A5E JN75 013800 -18 1986 F1PBZ K4MS R-17 013815 +17 2705 K4MS F1PBZ RR73 013815 +11 2132 K4MS 9A5E JN75 013830 -18 1986 F1PBZ K4MS 73 013845 -2 1070 K4MS EW8CW KO52 013845 +5 2132 K4MS 9A5E JN75 013915 +0 1070 K4MS EW8CW KO52 013915 +12 2132 K4MS 9A5E JN75 013945 +2 1070 K4MS EW8CW KO52 013945 +6 2132 K4MS 9A5E JN75 014045 +4 1570 K4MS EW8CW KO52 015015 -24 1965 LZ1EV K4MS EM93
UTC dB Audio Message 021330 -10 2237 8Z1IT K4MS EM93 (x10)
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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