YU7OM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YU7OM, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-08-21.
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 YU7OM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was +8 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
- +8 dB
- Estimated 10th-90th percentile
- -7 to +12 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 21.
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 YU7OM in decoded directed-looking exchanges:
Most frequent locator attributed to YU7OM
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
- JN95 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 536 km (approx.)
- Last such locator decoded
- 2026-08-21 19:59 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 | YU7OM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-21 20:03 | 20m | +8 / +10 | F4HSB | +2 / -11 | 5 | ✓ Full exchange observed |
| 08-21 20:03 | 20m | +10 / - | JG1IPZ | - / -18 | 4 | ✓ Closing fragment |
| 08-21 20:00 | 20m | +10 / -5 | DL3MIB | +13 / 0 | 6 | ✓ Full exchange observed |
| 08-21 19:59 | 20m | +12 / - | C91RU | - / -18 | 3 | ✓ Closing fragment |
| 08-21 19:54 | 20m | +8 / - | UR5WAI | - / -9 | 3 | Partial capture |
| 08-21 19:51 | 20m | +6 / -20 | JE1FQV | -8 / -12 | 6 | ✓ Full exchange observed |
| 08-21 19:18 | 20m | -8 / - | EN35UKR | - / - | 2 | Partial capture |
| 07-10 19:26 | 20m | - / +5 | CN2DX | +2 / - | 2 | ✓ Closing fragment |
| 06-23 18:14 | 20m | - / - | IU5HIU | +4 / - | 2 | Partial capture |
| 06-23 18:06 | 20m | - / -1 | PD0HLA | -1 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200100 +12 1107 YU7OM DL3MIB JN57 200115 +9 384 DL3MIB YU7OM +00 200130 +13 1107 YU7OM DL3MIB R-05 200145 +11 384 DL3MIB YU7OM RR73 200200 +16 1107 YU7OM DL3MIB 73 200245 +7 384 SP6AXW YU7OM RR73 200315 +9 384 JG1IPZ YU7OM -18 200330 +4 1920 YU7OM F4HSB JN37 200345 +12 384 JG1IPZ YU7OM -18 (x3) 200515 +7 384 F4HSB YU7OM -11 200530 +2 1920 YU7OM F4HSB R+10 200545 +10 384 F4HSB YU7OM RR73 200600 -1 1920 YU7OM F4HSB 73
UTC dB Audio Message 204445 -24 1444 YU7OM OH2HGK RR73 204900 -22 1695 YU7OM DJ0MAB R-11 205730 -17 1795 YU7OM CN2DX -04 210430 +0 2492 YU7OM CE2SV -16 104830 -21 2067 YU7OM F4FSY -06 190830 -16 837 YU7OM F4EEJ RR73
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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