W2JMU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving W2JMU, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-08-28.
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 W2JMU 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 (83%), followed by 20 m (17%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-28 01:23 UTC
Observed FT8 message patterns
- Attributed sample
- 6 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -11 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 1.
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 W2JMU in decoded directed-looking exchanges:
Most frequent locator attributed to W2JMU
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
- FN21 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,033 km (approx.)
- Last such locator decoded
- 2026-08-28 01:22 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 | W2JMU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-28 01:21 | 40m | -9 / - | <...> | - / +4 | 3 | Partial capture |
| 08-28 01:15 | 40m | -12 / - | <...> | - / - | 2 | Partial capture |
| 08-27 02:34 | 40m | - / +2 | G6PWS | -5 / - | 9 | ✓ Closing fragment |
| 08-27 02:21 | 40m | - / -24 | RT6DU | -6 / - | 8 | Partial capture |
| 08-18 14:19 | 20m | - / - | R7DX | +8 / - | 3 | Partial capture |
| 07-03 15:50 | 20m | - / -13 | <...> | -12 / - | 2 | Partial capture |
| 06-25 02:50 | 60m | - / - | DL9KM | -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 023400 +5 2502 W2JMU RZ6L KN97 023400 -5 963 W2JMU G6PWS IO91 (x9) 011515 -11 468 <...> W2JMU FN21 (x5)
UTC dB Audio Message 154945 -11 1932 W2JMU TM13COL -13 155045 -12 1932 W2JMU <...> -13 (x2) 141930 -4 1209 W2JMU R7DX KN84 (x3)
UTC dB Audio Message 025030 -19 1266 W2JMU DL9KM JN68 (x2)
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