MM0JJU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving MM0JJU, decoded by SO8OO in southeastern Poland. 307 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-08-19.
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 307 FT8 messages attributed to MM0JJU as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 80 m (3%). Several six-hour UTC windows tied for the largest share (91%), 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
Bands
Last attributed message: 2026-08-19 19:59 UTC
Observed FT8 message patterns
- Attributed sample
- 307 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -16 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 118, strong (≥ -8 dB) 149.
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 MM0JJU in decoded directed-looking exchanges:
Most frequent locator attributed to MM0JJU
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
- IO75 · 193 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,894 km (approx.)
- Last such locator decoded
- 2026-08-19 19:52 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 | MM0JJU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-20 05:27 | 20m | - / -16 | 9A5E | -14 / - | 2 | Partial capture |
| 08-20 05:22 | 20m | - / -20 | UT5MD | +4 / - | 5 | Partial capture |
| 08-20 05:14 | 20m | - / -18 | UT5MD | -12 / - | 3 | Partial capture |
| 08-20 04:06 | 20m | - / -10 | RA6MQ | +6 / - | 2 | ✓ Closing fragment |
| 08-19 19:59 | 20m | -6 / - | R4HHN | - / -24 | 2 | Partial capture |
| 08-19 19:54 | 20m | - / -7 | CT1END/P | -18 / - | 3 | ✓ Closing fragment |
| 08-19 19:48 | 20m | -15 / - | IK4LZH | - / +2 | 2 | ✓ Closing fragment |
| 08-19 19:47 | 20m | - / -9 | UT5MD | -8 / - | 5 | ✓ Closing fragment |
| 08-19 19:41 | 20m | -14 / -20 | CT1BFP | -16 / - | 13 | ✓ Closing observed |
| 08-19 19:37 | 20m | -12 / - | IU3MDI | -20 / - | 2 | ✓ Closing observed |
| 08-19 19:33 | 20m | - / - | IK1RQX | -5 / - | 3 | Partial capture |
| 08-19 19:29 | 20m | -14 / -13 | CN8NS | -11 / - | 4 | ✓ Closing observed |
| 08-19 19:27 | 20m | -16 / - | EA5ISM | - / -10 | 2 | Partial capture |
| 08-19 19:18 | 20m | -17 / - | IU3VHR | - / +8 | 2 | ✓ Closing fragment |
| 08-19 19:12 | 20m | - / - | IU4UFT | -15 / - | 10 | Partial capture |
| 08-19 18:57 | 20m | -11 / - | YL2KF | - / - | 2 | Partial capture |
| 08-19 18:54 | 20m | -9 / - | <...> | - / -12 | 5 | Partial capture |
| 08-19 18:48 | 20m | -7 / - | HA7NB | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202430 -4 590 MM0JJU OZ7CL -11
UTC dB Audio Message 195615 -17 1225 MM0JJU CT1END/P RR73 195900 -6 1027 R4HHN MM0JJU -24 (x2) 040630 +6 2057 MM0JJU RA6MQ -10 (x2) 051445 -7 2019 MM0JJU UT5MD -18 (x8) 052700 -14 856 MM0JJU 9A5E -16 (x2)
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