YU7DES — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YU7DES, decoded by SO8OO in southeastern Poland. 410 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-23.
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 410 FT8 messages attributed to YU7DES 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%), followed by 40 m (0%). Most decodes (97%) fell within the six-hour window 11:00-17:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-08-23 14:26 UTC
Observed FT8 message patterns
- Attributed sample
- 410 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -16 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 101, strong (≥ -8 dB) 266.
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 YU7DES 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 YU7DES
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
- JN96 · 185 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 435 km (approx.)
- Last such locator decoded
- 2026-08-23 14:26 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 | YU7DES S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 16:10 | 20m | - / -12 | M0ABG | -4 / - | 2 | ✓ Closing fragment |
| 08-30 15:55 | 20m | - / -21 | A41ZZ | -10 / - | 2 | ✓ Closing fragment |
| 08-30 15:50 | 20m | - / -1 | EA5JLN | +16 / - | 2 | ✓ Closing fragment |
| 08-30 15:32 | 20m | - / -3 | EA3DM | -8 / - | 2 | ✓ Closing fragment |
| 08-30 15:25 | 20m | - / -4 | F4HTA | -14 / - | 2 | ✓ Closing fragment |
| 08-30 15:22 | 20m | - / -3 | G3EFG | +12 / - | 2 | Partial capture |
| 08-30 15:09 | 20m | - / -8 | DJ0VOG | +2 / - | 2 | ✓ Closing fragment |
| 08-30 15:03 | 20m | - / -11 | JA8CJY | -6 / - | 2 | ✓ Closing fragment |
| 08-30 14:57 | 20m | - / -11 | M9DJN | -4 / - | 2 | ✓ Closing fragment |
| 08-30 14:48 | 20m | - / -14 | RU4B | +6 / - | 2 | ✓ Closing fragment |
| 08-30 14:44 | 20m | - / -16 | RW9MZ | -16 / - | 4 | ✓ Closing fragment |
| 08-30 14:34 | 20m | - / -13 | G7FTN | +2 / - | 2 | ✓ Closing fragment |
| 08-30 14:27 | 20m | - / -13 | M0SSV | -1 / - | 3 | Partial capture |
| 08-30 14:13 | 20m | - / - | IU8WRA | -4 / - | 2 | Partial capture |
| 08-30 14:07 | 20m | - / +6 | HB9HNU | 0 / - | 2 | ✓ Closing fragment |
| 08-30 13:59 | 20m | - / -2 | F4IEW | -10 / - | 2 | ✓ Closing fragment |
| 08-30 13:18 | 20m | - / -12 | ON3CCM | 0 / - | 2 | ✓ Closing fragment |
| 08-30 13:13 | 20m | - / - | F5SFT | -4 / - | 2 | ✓ Closing fragment |
| 08-30 13:03 | 20m | - / -14 | OH/SM5MRW | -7 / - | 3 | Partial capture |
| 08-30 12:50 | 20m | - / +1 | F4HTA | +17 / - | 2 | ✓ Closing fragment |
| 08-30 12:47 | 20m | - / +1 | ON4AVV | +8 / - | 2 | ✓ Closing fragment |
| 08-30 12:45 | 20m | - / -4 | OZ7FOC | -10 / - | 4 | ✓ Closing fragment |
| 08-30 12:41 | 20m | - / -5 | M0JPU | -10 / - | 2 | ✓ Closing fragment |
| 08-30 12:32 | 20m | - / -13 | UB8CPH | -13 / - | 4 | Partial capture |
| 08-30 12:21 | 20m | - / -22 | DC2TL | -14 / - | 2 | ✓ Closing fragment |
| 08-30 12:12 | 20m | - / +2 | RV3DTN | +12 / - | 2 | ✓ Closing fragment |
| 08-30 12:02 | 20m | - / -7 | M8KKH | -2 / - | 2 | ✓ Closing fragment |
| 08-30 11:58 | 20m | - / -7 | UI6O | -6 / - | 2 | Partial capture |
| 08-30 11:54 | 20m | - / - | M0BOB | -10 / - | 3 | ✓ Closing fragment |
| 08-30 11:52 | 20m | - / +4 | RM6OS | -4 / - | 2 | ✓ Closing fragment |
| 08-30 11:39 | 20m | - / -12 | EC3A | +1 / - | 3 | ✓ Closing fragment |
| 08-30 11:33 | 20m | - / -12 | RN3PD | -2 / - | 2 | ✓ Closing fragment |
| 08-30 11:31 | 20m | - / - | IK4LZH | +18 / - | 2 | ✓ Closing fragment |
| 08-30 11:28 | 20m | - / -19 | AA3B | -4 / - | 2 | ✓ Closing fragment |
| 08-23 16:28 | 20m | - / -17 | M0LHJ | -5 / - | 3 | ✓ Closing fragment |
| 08-23 16:22 | 20m | - / -6 | F1THK | +4 / - | 2 | ✓ Closing fragment |
| 08-23 15:58 | 20m | - / -15 | R8CGT | -16 / - | 3 | ✓ Closing fragment |
| 08-23 15:51 | 20m | - / -7 | 9H4CM | -12 / - | 4 | ✓ Closing fragment |
| 08-23 15:49 | 20m | - / -9 | EC3A | +8 / - | 2 | ✓ Closing fragment |
| 08-23 15:27 | 20m | - / -4 | 9A6NTK | -4 / - | 2 | ✓ Closing fragment |
| 08-23 15:21 | 20m | - / -11 | JA7IC | -7 / - | 2 | ✓ Closing fragment |
| 08-23 15:13 | 20m | - / -3 | GU0UVH | -6 / - | 2 | Partial capture |
| 08-23 15:02 | 20m | - / -4 | OH7FQH | -5 / - | 3 | Partial capture |
| 08-23 14:35 | 20m | - / +5 | SV9MBL | +9 / - | 4 | Partial capture |
| 08-23 14:25 | 20m | - / -23 | LZ7DX | -5 / - | 2 | Partial capture |
| 08-23 14:22 | 20m | +1 / - | EA8ACW | - / - | 3 | Partial capture |
| 08-23 14:20 | 20m | -1 / - | RC6OD | +2 / - | 4 | ✓ Closing observed |
| 08-23 14:19 | 20m | -6 / - | M0XDC | - / -2 | 2 | Partial capture |
| 08-23 14:17 | 20m | - / -12 | OE9GWV | -5 / - | 3 | ✓ Closing fragment |
| 08-23 14:16 | 20m | -4 / - | LB8TG | - / +1 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 150345 -7 2832 YU7DES JA8CJY RR73 150930 +5 2785 YU7DES DJ0VOG -08 (x2) 152245 +11 906 YU7DES G3EFG -03 (x2) 152515 -15 624 YU7DES F4HTA -04 (x2) 153230 -11 1876 YU7DES EA3DM -03 (x2) 155045 +19 2655 YU7DES EA5JLN -01 (x2) 155530 -7 991 YU7DES A41ZZ -21 (x2) 161030 -5 1719 YU7DES M0ABG -12 (x2)
UTC dB Audio Message 133600 -12 1208 YU7DES SP9CXN -03 (x2) 134430 -20 1999 YU7DES DL4JTH JO60 134630 -13 1999 YU7DES OE3DXA -09 (x2) 135700 -16 1492 YU7DES HG8LXL KN06 (x3)
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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