YO4DW — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving YO4DW, decoded by SO8OO in southeastern Poland. 1,479 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 37 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-30.
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 1,479 FT8 messages attributed to YO4DW as the transmitting token by decoded message structure across 37 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (47%), followed by 40 m (38%) and 80 m (14%). Most decodes (72%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -6.2 dB.
Overview
Bands
Last attributed message: 2026-10-30 20:55 UTC
Observed FT8 message patterns
- Attributed sample
- 1,479 messages
- Active dates
- 37 UTC dates
- Estimated median S/N
- -6.2 dB
- Estimated 10th-90th percentile
- -15.7 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 149, moderate (-15 to -9 dB) 449, strong (≥ -8 dB) 881.
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 YO4DW 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 YO4DW
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
- KN34 · 568 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 721 km (approx.)
- Last such locator decoded
- 2026-10-30 20:54 UTC
Other locator fields attributed to this token: KN44 (338).
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 | YO4DW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 20:54 | 80m | -8 / - | DL9KM | +2 / -15 | 9 | Partial capture |
| 10-30 20:50 | 80m | -6 / - | MD0CCE | - / - | 2 | Partial capture |
| 10-30 20:45 | 80m | 0 / - | JA5FDJ | - / - | 7 | Partial capture |
| 10-30 20:43 | 80m | 0 / - | MD0CCE | - / - | 2 | Partial capture |
| 10-29 19:59 | 80m | - / +1 | UR5BIO | -7 / - | 3 | ✓ Closing fragment |
| 10-29 19:56 | 80m | -5 / - | UY5BQ | -9 / -3 | 2 | ✓ Closing observed |
| 10-29 19:54 | 80m | -5 / - | R3ZBY | - / -11 | 2 | ✓ Closing fragment |
| 10-29 19:52 | 80m | -7 / - | EB5R | - / -18 | 3 | ✓ Closing fragment |
| 10-29 19:50 | 80m | -5 / - | SP6KDM | - / -10 | 3 | Partial capture |
| 10-29 19:48 | 80m | -10 / -10 | SP4WJ | -19 / -12 | 4 | ✓ Full exchange observed |
| 10-29 19:45 | 80m | -9 / - | JJ3JHP | - / - | 2 | Partial capture |
| 10-29 19:44 | 80m | -8 / - | DD8BA | +11 / -10 | 3 | ✓ Closing observed |
| 10-29 19:40 | 80m | -10 / - | DO5PY | - / -18 | 2 | ✓ Closing fragment |
| 10-29 19:34 | 80m | - / -6 | US5WDP | +8 / - | 3 | ✓ Closing fragment |
| 10-29 19:22 | 80m | -9 / -6 | LY1DY | +2 / - | 4 | ✓ Closing observed |
| 10-29 19:11 | 80m | - / -17 | DO9DML | -5 / - | 2 | Partial capture |
| 10-29 19:04 | 80m | - / -10 | RA2FU | -2 / - | 4 | ✓ Closing fragment |
| 10-29 19:04 | 80m | - / -13 | IZ4EFV | -2 / - | 3 | ✓ Closing fragment |
| 10-29 19:00 | 80m | -12 / -6 | DL3MCW | +12 / -2 | 3 | Partial capture |
| 10-29 18:58 | 80m | -5 / - | TC2TR | - / -12 | 3 | ✓ Closing fragment |
| 10-29 18:27 | 40m | -13 / - | ZL1VAH | - / - | 2 | Partial capture |
| 10-28 18:35 | 80m | -6 / -11 | HF5A | +5 / -10 | 5 | ✓ Full exchange observed |
| 10-28 18:35 | 80m | -4 / - | RN3YN | -13 / -16 | 6 | ✓ Closing observed |
| 10-28 18:32 | 80m | -7 / - | JA7JPZ | - / -18 | 3 | Partial capture |
| 10-28 18:13 | 40m | -14 / - | 7P8GE | - / -19 | 2 | ✓ Closing fragment |
| 10-28 15:41 | 40m | -5 / - | UT/WE9G | - / -15 | 3 | Partial capture |
| 10-27 21:58 | 80m | -4 / -18 | EI4JFB | -7 / -19 | 4 | Partial capture |
| 10-27 21:53 | 80m | -6 / - | A92AE | - / - | 2 | Partial capture |
| 10-25 14:45 | 40m | -8 / - | OK3BR | -2 / -10 | 6 | Partial capture |
| 10-25 14:44 | 40m | +1 / - | RX9WM | - / -20 | 2 | ✓ Closing fragment |
| 10-25 14:40 | 40m | -8 / +2 | IU3JOY | -8 / -9 | 5 | ✓ Full exchange observed |
| 10-23 15:10 | 40m | -1 / - | BH8PYF | - / - | 3 | Partial capture |
| 10-23 15:05 | 40m | +2 / - | OK1DTC | +10 / -2 | 5 | ✓ Full exchange observed |
| 10-23 15:01 | 40m | -5 / - | IZ2WYA | -4 / -15 | 3 | ✓ Closing observed |
| 10-23 14:59 | 40m | 0 / -5 | R4FCK | -13 / -11 | 6 | ✓ Full exchange observed |
| 10-23 14:55 | 40m | -2 / -3 | RT3K | -10 / -2 | 3 | ✓ Full exchange observed |
| 10-23 14:52 | 40m | -2 / - | RT8T | - / -17 | 2 | ✓ Closing fragment |
| 10-23 14:51 | 40m | +2 / - | TK4QP | - / - | 2 | Partial capture |
| 10-23 14:49 | 40m | -8 / - | DG6CHI | - / -14 | 2 | ✓ Closing fragment |
| 10-23 14:47 | 40m | -1 / -6 | R7LC | -4 / 0 | 9 | ✓ Full exchange observed |
| 10-23 14:43 | 40m | 0 / - | R9OON | - / -17 | 2 | ✓ Closing fragment |
| 10-23 14:43 | 40m | +1 / -15 | F4GUK | -7 / -22 | 7 | ✓ Full exchange observed |
| 10-23 14:42 | 40m | -1 / - | RA4CPA | - / -9 | 2 | ✓ Closing fragment |
| 10-17 10:06 | 10m | - / -7 | CT7AUT | -20 / - | 2 | Partial capture |
| 10-17 10:05 | 10m | - / -15 | CT2KCK | -6 / - | 4 | ✓ Closing fragment |
| 10-15 16:50 | 40m | - / - | IZ5FZO | -9 / - | 2 | Partial capture |
| 10-15 16:46 | 40m | -6 / -9 | OE5ABL | -14 / -19 | 6 | Partial capture |
| 10-15 16:41 | 40m | 0 / - | BD8FWI | - / -20 | 2 | ✓ Closing fragment |
| 10-15 16:37 | 40m | -2 / - | R4PFY | - / -15 | 2 | ✓ Closing fragment |
| 10-15 16:34 | 40m | -6 / - | SP9PSB | - / -15 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205015 -7 946 CQ YO4DW KN34 a1 205045 -5 946 MD0CCE YO4DW KN34 (x2) 205315 -5 946 CQ YO4DW KN34 (x3) 205430 -3 1577 YO4DW DL9KM JN68 205445 -9 946 DL9KM YO4DW -15 205500 +2 1577 YO4DW DL9KM JN68 (x2) 205545 -6 946 DL9KM YO4DW -15 205600 +4 1577 YO4DW DL9KM JN68 (x4)
UTC dB Audio Message 144515 -2 674 YO4DW OK3BR JN69 144530 -6 1626 OK3BR YO4DW -10 (x2) 144615 +1 674 YO4DW OK3BR R+11 (x3) 154115 -7 2299 UT/WE9G YO4DW KN34 (x2) 154200 +3 1914 YO4DW YO1BRANCUSI -16 154215 -6 2299 UT/WE9G YO4DW R-15 154315 +0 2298 CQ YO4DW KN34 181345 -13 2750 7P8GE YO4DW R-19 (x2) 182700 -12 1281 ZL1VAH YO4DW KN34 (x2)
UTC dB Audio Message 105915 -5 2538 YO4DW F1PBZ -02 (x2) 100930 -22 1702 YO4DW EX7CQ +17 (x2) 134330 -19 2154 YO4DW CN8NS -12 (x2) 100545 +0 2293 YO4DW CT2KCK IM59 (x2) 100645 -19 1510 YO4DW CT7AUT IM67 100645 -7 2294 YO4DW CT2KCK R-15 (x2) 100845 -22 1510 YO4DW CT7AUT R-07 103130 -16 2291 YO4DW EA5/PU2LSI -17 112645 -11 2490 YO4DW CT2GQA IM58
UTC dB Audio Message 022000 -10 773 YO4DW WO4SFA FM05 022015 -1 730 YO4DW WV2B -04 (x2) 022145 +4 934 YO4DW W6NWS -04 (x2) 022545 -12 602 YO4DW W1AW/2 -09 131130 -10 826 YO4DW PA2AMJ -15 (x3) 131330 -18 825 YO4DW F1IQH R-12 (x2) 131530 -8 824 YO4DW PA2AMJ -16 (x4)
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.
CW
3 CW reception events in the last 30 days.
- 80m: 3 events; last heard 2026-10-31 20:32 UTC
Latest CW receptions
| UTC | Band | kHz | S/N · 500 Hz | WPM | Listen |
|---|---|---|---|---|---|
| 2026-10-31 20:32:11 | 80m | 3533.002 | 19 dB | 32.2 | WebSDR ↗ |
| 2026-10-31 20:30:32 | 80m | 3533.001 | 16.8 dB | 31.9 | WebSDR ↗ |
| 2026-10-31 20:29:23 | 80m | 3533.002 | 12.3 dB | 31.7 | WebSDR ↗ |
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