K4MWB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving K4MWB, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 80m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-08-26.
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 22 FT8 messages attributed to K4MWB as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 22 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -12 to -1 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 15.
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 K4MWB in decoded directed-looking exchanges:
Most frequent locator attributed to K4MWB
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
- FM05 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,754 km (approx.)
- Last such locator decoded
- 2026-08-26 00:47 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 | K4MWB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-15 23:46 | 80m | - / -2 | EA8AJ | -13 / - | 2 | ✓ Closing fragment |
| 09-10 00:39 | 60m | - / -16 | PA4A | -1 / - | 3 | Partial capture |
| 08-31 00:40 | 80m | - / -15 | GM6URC | -4 / - | 5 | ✓ Closing fragment |
| 08-26 00:48 | 80m | - / -5 | PI4DX | +9 / - | 2 | ✓ Closing fragment |
| 08-26 00:46 | 80m | -20 / - | CX1T | - / - | 2 | Partial capture |
| 08-26 00:11 | 80m | - / - | SP1TJ | +12 / - | 3 | Partial capture |
| 08-26 00:06 | 80m | - / -14 | OH2MA | +10 / - | 7 | ✓ Closing fragment |
| 08-16 00:06 | 80m | - / - | UT7UA | +17 / - | 7 | Partial capture |
| 08-16 00:05 | 80m | - / -8 | HB9EFK | +16 / - | 2 | ✓ Closing fragment |
| 08-16 00:05 | 80m | - / - | OH3JP | +2 / - | 7 | Partial capture |
| 08-15 23:31 | 60m | - / -13 | PI4DX | 0 / - | 2 | ✓ Closing fragment |
| 08-14 00:15 | 80m | - / - | EA5HM | -8 / - | 3 | Partial capture |
| 08-14 00:15 | 80m | - / - | EA2EES | -17 / - | 2 | Partial capture |
| 08-14 00:14 | 80m | - / -14 | 9A5E | +14 / - | 3 | ✓ Closing fragment |
| 08-14 00:12 | 80m | - / - | DO5HB | +3 / - | 2 | Partial capture |
| 08-14 00:11 | 80m | - / -20 | LZ2VQ | +2 / - | 3 | Partial capture |
| 08-13 00:38 | 80m | -10 / - | KR4EOD | - / +4 | 2 | ✓ Closing fragment |
| 08-13 00:37 | 80m | -4 / - | N9ZJ | -17 / -6 | 3 | ✓ Closing observed |
| 08-13 00:35 | 80m | - / - | F8NHF | +2 / - | 8 | Partial capture |
| 08-13 00:35 | 80m | -7 / +1 | PI4DX | +4 / - | 3 | ✓ Closing observed |
| 08-13 00:33 | 80m | -7 / - | <...> | - / -16 | 2 | Partial capture |
| 08-13 00:30 | 80m | - / - | HB9MZI | -10 / - | 3 | Partial capture |
| 08-13 00:30 | 80m | - / - | LB0TH | -4 / - | 3 | Partial capture |
| 08-13 00:29 | 80m | - / - | DO5HB | -4 / - | 10 | Partial capture |
| 08-13 00:28 | 80m | - / - | DO8JB | +8 / - | 13 | Partial capture |
| 08-13 00:28 | 80m | -2 / - | K4BQP/4 | -22 / -16 | 6 | ✓ Closing observed |
| 08-13 00:27 | 80m | - / - | IK2TPX | +2 / - | 3 | Partial capture |
| 08-13 00:27 | 80m | -2 / -11 | SP1MGM | +11 / -16 | 5 | ✓ Full exchange observed |
| 08-13 00:24 | 80m | -8 / - | PI4DX | - / -3 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 001130 +12 783 K4MWB SP1TJ JO74 (x2) 004630 -21 1783 CX1T K4MWB FM05 (x2) 004800 +9 2253 K4MWB PI4DX -05 (x2) 003830 +1 2129 K4MWB MW0CRI -10 004015 -2 1316 K4MWB GM6URC IO75 004045 +5 1219 K4MWB LZ2VQ KN23 004045 -6 1316 K4MWB GM6URC IO75 (x4) 234630 -12 1600 K4MWB EA8AJ -02 (x2)
UTC dB Audio Message 233130 -2 1602 K4MWB PI4DX -13 (x2) 003030 -10 1332 K4MWB F5RMK -19 003930 -2 1842 K4MWB PA4A -16 (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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