YM3XUU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YM3XUU, decoded by SO8OO in southeastern Poland. 305 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-02 and 2026-10-03.
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 305 FT8 messages attributed to YM3XUU 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 (100%). In this small sample, the estimated median decoder S/N was -5 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 305 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -13 to +2 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 72, strong (≥ -8 dB) 211.
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 YM3XUU 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 YM3XUU
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
- KN40 · 72 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,190 km (approx.)
- Last such locator decoded
- 2026-10-03 07:54 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 | YM3XUU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-03 07:55 | 40m | - / - | DB2HA | -8 / - | 8 | Partial capture |
| 10-03 07:46 | 40m | -17 / - | DB2HA | -9 / - | 10 | Partial capture |
| 10-03 07:40 | 40m | - / - | SP9DAT | -24 / - | 6 | Partial capture |
| 10-03 05:00 | 40m | - / - | HB9ZHK | -12 / - | 2 | Partial capture |
| 10-03 04:57 | 40m | -9 / - | EN100NP | - / - | 7 | Partial capture |
| 10-03 04:57 | 40m | - / - | F4MXT/P | 0 / - | 8 | Partial capture |
| 10-03 04:54 | 40m | -9 / - | F3CJ | -14 / - | 7 | Partial capture |
| 10-03 04:53 | 40m | -6 / - | AB5VJ | - / - | 2 | Partial capture |
| 10-03 04:51 | 40m | -4 / - | F5PBG | -14 / - | 4 | Partial capture |
| 10-03 04:49 | 40m | -4 / - | 9A4ZM | - / - | 3 | Partial capture |
| 10-03 04:48 | 40m | -6 / -12 | DL1VED | -10 / - | 5 | ✓ Closing observed |
| 10-03 04:44 | 40m | -7 / - | F5PBG | -18 / - | 5 | Partial capture |
| 10-03 04:43 | 40m | -4 / - | NE5TX | - / - | 2 | Partial capture |
| 10-03 04:41 | 40m | -1 / -2 | OD5KU | -13 / - | 7 | ✓ Closing observed |
| 10-03 04:38 | 40m | -6 / - | N0YO | - / - | 4 | ✓ Closing fragment |
| 10-03 04:36 | 40m | -5 / - | IW9FRA | - / - | 3 | Partial capture |
| 10-03 04:34 | 40m | -11 / - | OD5KU | - / - | 2 | Partial capture |
| 10-03 04:31 | 40m | -7 / - | HA5PT | - / - | 3 | ✓ Closing fragment |
| 10-03 04:29 | 40m | -10 / - | K5RSB | - / - | 3 | Partial capture |
| 10-03 04:26 | 40m | -5 / -2 | RX6DX | 0 / - | 7 | Partial capture |
| 10-03 04:22 | 40m | -6 / -6 | R1BDX | -17 / - | 9 | ✓ Closing observed |
| 10-03 04:19 | 40m | -8 / - | K5RSB | - / - | 3 | Partial capture |
| 10-03 04:18 | 40m | -6 / - | KG4JOK | - / - | 2 | Partial capture |
| 10-03 04:15 | 40m | -6 / - | R3UDU | - / - | 3 | ✓ Closing fragment |
| 10-03 04:11 | 40m | -13 / - | US3EW | -14 / - | 5 | ✓ Closing observed |
| 10-03 04:10 | 40m | -12 / - | F3CJ | -12 / - | 4 | Partial capture |
| 10-03 04:09 | 40m | - / - | F4MXT/P | -2 / - | 6 | Partial capture |
| 10-03 04:07 | 40m | - / - | F5PBG | -16 / - | 2 | Partial capture |
| 10-03 04:04 | 40m | - / -2 | DL3MIB | +7 / - | 5 | Partial capture |
| 10-03 04:04 | 40m | -8 / - | PE1NPS | +6 / - | 6 | Partial capture |
| 10-03 04:02 | 40m | -7 / - | EA1IOK | - / - | 3 | Partial capture |
| 10-03 04:01 | 40m | -11 / - | PA3DZM | -9 / - | 6 | Partial capture |
| 10-03 03:58 | 40m | - / - | RD3FY | -6 / - | 3 | Partial capture |
| 10-03 03:58 | 40m | 0 / -13 | YO4NF | +4 / - | 7 | ✓ Closing observed |
| 10-03 03:56 | 40m | -2 / +5 | KI8JP | -8 / - | 5 | ✓ Full exchange observed |
| 10-03 03:55 | 40m | -6 / - | IZ8PPI | - / - | 2 | Partial capture |
| 10-03 03:53 | 40m | - / - | F5PBG | -8 / - | 2 | Partial capture |
| 10-03 03:50 | 40m | -12 / - | W1JHK | - / - | 3 | ✓ Closing fragment |
| 10-03 03:49 | 40m | -14 / - | F5PBG | -4 / - | 3 | Partial capture |
| 10-03 03:47 | 40m | -12 / - | PA3DZM | -10 / - | 6 | Partial capture |
| 10-03 03:44 | 40m | - / - | F4MXT/P | 0 / - | 12 | Partial capture |
| 10-03 03:43 | 40m | - / - | PE1NPS | +3 / - | 3 | Partial capture |
| 10-03 03:41 | 40m | -18 / - | F3CJ | -15 / - | 7 | Partial capture |
| 10-03 03:38 | 40m | -20 / - | UX1VT | +3 / - | 3 | Partial capture |
| 10-03 03:36 | 40m | -10 / -4 | RA3AJT | -5 / - | 7 | ✓ Full exchange observed |
| 10-03 03:34 | 40m | -16 / - | IU8RFW | -9 / - | 6 | Partial capture |
| 10-03 03:31 | 40m | -14 / - | R7MP | - / - | 3 | ✓ Closing fragment |
| 10-03 03:29 | 40m | -11 / +10 | UA3PAB | +4 / - | 3 | ✓ Closing observed |
| 10-03 03:29 | 40m | - / - | F3CJ | -16 / - | 4 | Partial capture |
| 10-03 03:24 | 40m | -11 / - | W4FO | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 074930 -15 1756 YM3XUU DB2HA JO52 (x2) 075015 -22 1404 CQ CQP YM3XUU KN40 (x5) 075500 -12 1642 YM3XUU DB2HA JO52 (x8)
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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