MI7USM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving MI7USM, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-22.
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 26 FT8 messages attributed to MI7USM as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (62%), 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
Observed FT8 message patterns
- Attributed sample
- 26 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -14 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 13.
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 MI7USM in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to MI7USM
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
- IO64 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,010 km (approx.)
- Last such locator decoded
- 2026-06-15 07:27 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 | MI7USM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 22:47 | 20m | - / -13 | 5Z4VJ | -8 / - | 3 | Partial capture |
| 08-27 21:09 | 20m | - / -20 | YV5WL | 0 / - | 2 | Partial capture |
| 08-20 08:32 | 20m | -7 / - | <...> | - / -20 | 7 | Partial capture |
| 08-15 14:24 | 20m | - / -20 | S51MB | +4 / - | 2 | Partial capture |
| 07-28 17:33 | 20m | - / -10 | CN2DX | -6 / - | 2 | ✓ Closing fragment |
| 07-27 22:46 | 20m | -14 / - | WA4FU | -19 / +1 | 3 | ✓ Closing observed |
| 07-27 22:14 | 40m | - / -12 | DH5BM | -2 / - | 2 | Partial capture |
| 07-24 16:26 | 20m | - / -6 | F1PBZ | -6 / - | 2 | ✓ Closing fragment |
| 07-04 19:54 | 20m | - / - | IZ0MIT | -5 / - | 2 | Partial capture |
| 06-27 16:47 | 10m | - / -6 | DN9TL | -16 / - | 2 | Partial capture |
| 06-23 07:09 | 20m | - / -7 | <...> | -2 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 083300 -3 2833 <...> MI7USM -20 (x5) 090530 -14 2817 LA3SP MI7USM -16 194630 +8 2218 MI7USM F4NBB R-13 194730 -9 2876 MI7USM ON1JP -15 194900 -9 956 MI7USM G8IXM -05 224000 -12 1085 MI7USM WY4I EL95 210930 -1 2201 MI7USM YV5WL R-20 (x2) 224745 -9 1969 MI7USM 5Z4VJ KI88 (x3)
UTC dB Audio Message 221400 +1 2785 MI7USM DH5BM JO41 (x2)
UTC dB Audio Message 164730 -16 1106 MI7USM DN9TL JO30 (x2) 164830 -22 1953 MI7USM DK7ZT -10
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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