YO3JW — 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 YO3JW, decoded by SO8OO in southeastern Poland. 2,740 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 48 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.
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 2,740 FT8 messages attributed to YO3JW as the transmitting token by decoded message structure across 48 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 80 m (43%) and 160 m (6%). The busiest six-hour window was 15:00-21:00 UTC, containing 38% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (79%); the estimated median was -3 dB.
Overview
Bands
Last attributed message: 2026-11-05 07:36 UTC
Observed FT8 message patterns
- Attributed sample
- 2,740 messages
- Active dates
- 48 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -12 to +7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 132, moderate (-15 to -9 dB) 451, strong (≥ -8 dB) 2,157.
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 YO3JW 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 YO3JW
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
- KN35 · 1,419 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 628 km (approx.)
- Last such locator decoded
- 2026-11-05 07:36 UTC
Other locator fields attributed to this token: KN34 (579).
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 | YO3JW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 07:36 | 40m | - / -10 | PD40EUDXF | -2 / - | 2 | Partial capture |
| 11-05 07:35 | 40m | -6 / - | SP0YAGI | - / -2 | 4 | Partial capture |
| 11-05 07:32 | 40m | -6 / - | SP0YAGI | - / - | 2 | Partial capture |
| 11-04 17:21 | 80m | +2 / -13 | UX7UU | -4 / - | 6 | ✓ Full exchange observed |
| 11-04 17:19 | 80m | -6 / - | RU4CK/P | - / -13 | 2 | Partial capture |
| 11-03 05:49 | 80m | -2 / -2 | HA3TBL | -12 / -7 | 5 | ✓ Full exchange observed |
| 11-03 05:46 | 80m | 0 / - | LZ3QC | - / -10 | 3 | ✓ Closing fragment |
| 11-03 05:38 | 80m | +5 / -16 | DM2GG | -15 / -20 | 5 | ✓ Full exchange observed |
| 11-03 05:36 | 60m | - / - | PE1NMM | -8 / - | 4 | Partial capture |
| 11-03 05:33 | 80m | -2 / - | YO4CVV | - / -8 | 2 | ✓ Closing fragment |
| 11-03 05:21 | 80m | -4 / - | DL1HBG | - / -9 | 2 | Partial capture |
| 11-03 05:20 | 80m | -2 / -7 | DF3MC | +6 / -11 | 3 | ✓ Full exchange observed |
| 11-03 05:16 | 80m | -4 / -12 | DL5MRK | -4 / -18 | 8 | ✓ Full exchange observed |
| 11-03 05:14 | 80m | -6 / - | OM3ZAS | +10 / 0 | 3 | ✓ Closing observed |
| 11-03 05:02 | 80m | -4 / +1 | YO8RAW | -4 / +10 | 4 | ✓ Full exchange observed |
| 11-03 04:54 | 80m | - / -15 | MI0OBC | -10 / - | 2 | Partial capture |
| 11-03 04:52 | 80m | +5 / - | SV5AZK | - / -19 | 2 | ✓ Closing fragment |
| 11-03 04:52 | 80m | - / - | M9XPN | -16 / - | 2 | Partial capture |
| 11-03 04:50 | 80m | - / -6 | DO1ID | 0 / - | 6 | Partial capture |
| 11-03 04:48 | 80m | +2 / -3 | UR3AC | -14 / -6 | 5 | ✓ Full exchange observed |
| 11-03 04:47 | 80m | - / - | IZ5FSO | -10 / - | 2 | Partial capture |
| 11-03 04:40 | 80m | +5 / -2 | DL1VVQ | -5 / -15 | 2 | Partial capture |
| 11-03 04:36 | 80m | 0 / - | DL5MRK | -14 / -19 | 4 | Partial capture |
| 11-03 04:29 | 80m | +1 / - | SQ9EJ | - / -7 | 2 | ✓ Closing fragment |
| 11-03 04:27 | 80m | +2 / - | RZ3BP | 0 / - | 2 | ✓ Closing observed |
| 11-03 04:14 | 80m | - / - | IN3WZS | +8 / - | 4 | Partial capture |
| 11-03 04:05 | 80m | +4 / - | US5EAA | - / -2 | 2 | ✓ Closing fragment |
| 11-03 04:03 | 80m | +6 / -1 | YO4GIY | -7 / 0 | 5 | ✓ Full exchange observed |
| 11-03 03:57 | 80m | -2 / - | UA3WG | - / -16 | 3 | ✓ Closing fragment |
| 11-03 03:55 | 80m | +2 / 0 | YU0U | +2 / -2 | 5 | ✓ Full exchange observed |
| 11-03 03:46 | 80m | -1 / -17 | R1BMY | -20 / -14 | 7 | ✓ Full exchange observed |
| 11-03 03:43 | 80m | -4 / -6 | DO1ID | +5 / -17 | 4 | ✓ Full exchange observed |
| 11-03 03:39 | 80m | -8 / - | OK1TRA | -1 / -4 | 3 | ✓ Closing observed |
| 11-03 03:32 | 80m | +9 / - | SV5AZK | - / -24 | 3 | Partial capture |
| 11-03 03:28 | 80m | -1 / -15 | SP9WLC | +6 / +4 | 4 | ✓ Full exchange observed |
| 11-03 03:19 | 80m | +1 / - | ON8FAB | -11 / -16 | 2 | ✓ Closing observed |
| 11-03 03:11 | 80m | -1 / -2 | DM1EE | -2 / - | 5 | ✓ Closing observed |
| 11-03 03:06 | 80m | - / - | F5LMJ | -12 / - | 2 | Partial capture |
| 11-03 03:05 | 80m | -4 / -8 | RA4FEA | -13 / -7 | 3 | ✓ Full exchange observed |
| 11-03 03:02 | 80m | -4 / - | UT2UB | - / +1 | 2 | ✓ Closing fragment |
| 11-03 02:58 | 80m | -5 / -19 | UA9CK | -6 / -8 | 4 | ✓ Full exchange observed |
| 11-03 02:55 | 80m | 0 / -11 | R4HHN | -12 / -12 | 3 | ✓ Full exchange observed |
| 11-03 02:49 | 80m | +1 / -22 | RA4HG | -18 / - | 3 | ✓ Closing observed |
| 11-03 02:48 | 80m | - / - | M9XPN | -14 / - | 2 | Partial capture |
| 11-03 02:41 | 80m | - / - | UA9CK | -13 / - | 3 | Partial capture |
| 11-03 02:37 | 80m | +8 / 0 | ON8WR | -8 / -17 | 7 | ✓ Full exchange observed |
| 11-03 02:31 | 80m | +10 / -7 | F5PBG | -6 / -16 | 4 | ✓ Full exchange observed |
| 11-03 02:27 | 80m | +7 / -9 | SP1EG | +2 / - | 3 | ✓ Closing observed |
| 11-03 02:21 | 80m | +1 / -10 | F5PBG | -5 / -14 | 9 | ✓ Full exchange observed |
| 11-03 02:19 | 80m | +9 / -5 | DO1OAS | -5 / -19 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 075430 +2 1014 6W/IK2HKT YO3JW KN35 (x5) 075700 +6 1014 <PC40EUDXF> YO3JW KN35 (x2) 073215 -6 1055 SP0YAGI YO3JW KN35 (x5) 073630 -3 2658 YO3JW PD40EUDXF -10 073645 -4 1055 SP0YAGI YO3JW R-02 073700 -1 2658 YO3JW PD40EUDXF -10
UTC dB Audio Message 060130 +2 774 CQ YO3JW KN35 061030 -3 773 E75FM YO3JW RR73 061100 -1 774 CQ YO3JW KN35 (x5) 171930 -10 1017 RU4CK/P YO3JW KN35 (x2) 172115 -6 1989 YO3JW UX7UU KO50 (x2) 172200 +3 1017 UX7UU YO3JW +13 172215 -5 1989 YO3JW UX7UU R-13 172230 +1 1017 UX7UU YO3JW RR73 172245 -2 1989 YO3JW UX7UU 73
UTC dB Audio Message 190145 -15 2482 YO3JW DL9JD JN47 190145 -6 2095 YO3JW DK2NG R+01 190215 -13 2483 YO3JW DL9JD JN47 190230 -9 1431 DG4BZ YO3JW -18 190300 -5 1431 CQ YO3JW KN35 (x2) 190345 -2 540 YO3JW DG4BZ R-06 (x5) 053615 -6 804 YO3JW PE1NMM JO32 (x4)
UTC dB Audio Message 201500 -3 1388 CQ YO3JW KN35 (x15)
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
No CW receptions recorded for this callsign in the last 30 days.
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