YO3KWJ — 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 YO3KWJ, decoded by SO8OO in southeastern Poland. 1,030 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-10-07 and 2026-10-13.
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 1,030 FT8 messages attributed to YO3KWJ as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (68%), followed by 80 m (32%). Most decodes (68%) fell within the six-hour window 01:00-07:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +0.1 dB.
Overview
Bands
Last attributed message: 2026-10-13 16:56 UTC
Observed FT8 message patterns
- Attributed sample
- 1,030 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- +0.1 dB
- Estimated 10th-90th percentile
- -8.7 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 926.
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 YO3KWJ 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 YO3KWJ
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 · 569 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 721 km (approx.)
- Last such locator decoded
- 2026-10-13 16:54 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 | YO3KWJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-13 16:54 | 80m | -10 / -19 | F5PZT | -9 / -15 | 8 | Partial capture |
| 10-13 16:54 | 80m | -6 / -2 | SP9AWP | -6 / -8 | 5 | ✓ Full exchange observed |
| 10-13 16:52 | 80m | -12 / - | UA6MO | - / -14 | 2 | ✓ Closing fragment |
| 10-13 16:48 | 80m | -14 / -3 | DK0RMR | -2 / -11 | 6 | ✓ Full exchange observed |
| 10-13 16:46 | 80m | -9 / -14 | SP3IPA | +5 / -2 | 4 | ✓ Full exchange observed |
| 10-13 16:43 | 80m | -2 / +5 | UT4WT | -7 / +3 | 5 | ✓ Full exchange observed |
| 10-13 16:36 | 80m | +4 / -14 | RK4PR | -15 / -5 | 3 | ✓ Full exchange observed |
| 10-13 16:33 | 80m | +2 / -3 | OZ9FF | -12 / - | 3 | ✓ Closing observed |
| 10-13 16:33 | 80m | +2 / - | SP7IIX | -15 / -6 | 4 | ✓ Full exchange observed |
| 10-13 16:21 | 80m | 0 / -21 | RD7P | -4 / +5 | 5 | ✓ Full exchange observed |
| 10-13 16:16 | 80m | - / -15 | IQ4JO | +1 / - | 3 | ✓ Closing fragment |
| 10-13 16:09 | 80m | - / -7 | UT1EF | -6 / - | 11 | ✓ Closing fragment |
| 10-09 00:54 | 40m | - / - | G0YCE | -11 / - | 4 | Partial capture |
| 10-08 23:47 | 40m | - / -15 | W4AQL | -19 / - | 2 | ✓ Closing fragment |
| 10-08 23:46 | 40m | - / - | M6UCD | -20 / - | 2 | Partial capture |
| 10-08 19:22 | 40m | - / +4 | DL7ROB | -1 / - | 3 | Partial capture |
| 10-08 19:19 | 40m | - / - | DB5ST | -11 / - | 2 | ✓ Closing fragment |
| 10-08 19:18 | 40m | - / - | DL6RS | +5 / - | 3 | Partial capture |
| 10-08 19:16 | 40m | - / -1 | PD2MAC | -8 / - | 4 | ✓ Closing fragment |
| 10-08 18:59 | 40m | - / -3 | R3LDK | +1 / - | 3 | ✓ Closing fragment |
| 10-08 18:55 | 40m | - / +6 | S57FF | +3 / - | 3 | ✓ Closing fragment |
| 10-08 17:11 | 40m | - / -24 | LZ936BA | +2 / - | 3 | Partial capture |
| 10-08 16:47 | 40m | - / -20 | LZ936BA | +9 / - | 3 | Partial capture |
| 10-08 16:45 | 40m | +2 / -12 | G0RVY | 0 / -13 | 4 | ✓ Full exchange observed |
| 10-08 16:44 | 40m | +5 / - | YL2TM | -5 / -11 | 3 | ✓ Closing observed |
| 10-08 16:40 | 40m | - / - | DK5DW | -4 / - | 6 | Partial capture |
| 10-08 16:39 | 40m | +8 / - | HB9PHW | -16 / -18 | 4 | ✓ Closing observed |
| 10-08 16:31 | 40m | +4 / - | EU1CZ | 0 / -12 | 2 | Partial capture |
| 10-08 16:29 | 40m | 0 / - | JO4IPQ | - / -19 | 2 | ✓ Closing fragment |
| 10-08 16:27 | 40m | +2 / - | YO7CW | +10 / -15 | 3 | Partial capture |
| 10-08 16:26 | 40m | +2 / 0 | F6FHZ | -15 / -19 | 5 | ✓ Full exchange observed |
| 10-08 16:25 | 40m | +3 / -7 | F5LPL | -12 / - | 3 | ✓ Closing observed |
| 10-08 16:23 | 40m | +3 / 0 | DK5DW | -9 / -12 | 2 | Partial capture |
| 10-08 16:20 | 40m | +4 / - | Z34BET | - / -16 | 2 | Partial capture |
| 10-08 16:19 | 40m | +5 / - | BG7BVP | - / -12 | 3 | ✓ Closing fragment |
| 10-08 16:17 | 40m | +5 / - | RD3AD | - / -13 | 2 | ✓ Closing fragment |
| 10-08 16:15 | 40m | +1 / -10 | PA8DC | -5 / -12 | 7 | ✓ Full exchange observed |
| 10-08 16:14 | 40m | +4 / - | EY7BM | - / -11 | 2 | ✓ Closing fragment |
| 10-08 16:11 | 40m | - / - | F5LPL | -13 / - | 3 | Partial capture |
| 10-08 16:05 | 40m | +2 / -5 | OK8CZ | -9 / -12 | 5 | ✓ Full exchange observed |
| 10-08 16:04 | 40m | +3 / - | Z34BET | - / -17 | 3 | Partial capture |
| 10-08 16:01 | 40m | +1 / -14 | UA3GDJ | -2 / +2 | 4 | ✓ Full exchange observed |
| 10-08 15:58 | 40m | - / +8 | DM3BN | -8 / - | 2 | Partial capture |
| 10-08 15:56 | 40m | -4 / - | BG2EFX | - / -16 | 2 | Partial capture |
| 10-08 15:54 | 40m | - / -11 | I4WQH | -10 / - | 2 | ✓ Closing fragment |
| 10-08 15:53 | 40m | -7 / -1 | S51PV | -7 / -12 | 3 | Partial capture |
| 10-08 04:53 | 80m | -1 / - | IQ2AAH | - / - | 11 | Partial capture |
| 10-08 04:49 | 80m | 0 / +1 | YO5ODL | +4 / +9 | 6 | ✓ Full exchange observed |
| 10-08 04:25 | 80m | -3 / - | HA3HX | +4 / +5 | 3 | ✓ Closing observed |
| 10-08 04:19 | 80m | +5 / +8 | SP5KG | 0 / +2 | 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 165400 -12 330 CQ YO3KWJ KN34 165415 -7 1669 YO3KWJ SP9AWP JO90 165415 -10 887 YO3KWJ F5PZT JN38 165430 -10 331 F5PZT YO3KWJ -15 165530 -4 331 SP9AWP YO3KWJ -08 165545 -11 887 YO3KWJ F5PZT R-19 165600 -8 330 SP9AWP YO3KWJ -08 165615 -7 1669 YO3KWJ SP9AWP R-02 165615 -8 887 YO3KWJ F5PZT R-19 165645 -4 1669 YO3KWJ SP9AWP 73 165645 -10 886 YO3KWJ F5PZT R-19 165715 -24 1431 YO3KWJ RC7KH 73 165715 -7 886 YO3KWJ F5PZT JN38 (x3)
UTC dB Audio Message 192345 +2 1451 YO3KWJ DL7ROB R+04 234115 -23 1451 YO3KWJ TA2ED -13 234145 -18 1289 YO3KWJ F6FDY 73 234645 -21 1287 YO3KWJ M6UCD JO01 (x2) 234745 -20 1451 YO3KWJ W4AQL R-15 (x2) 235615 -22 1451 YO3KWJ TA2ED -13 005415 -13 1451 YO3KWJ G0YCE IO83 (x4) 005730 -24 1451 CQ YO3KWJ KN34 a1 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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