YO3JR — 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 YO3JR, decoded by SO8OO in southeastern Poland. 857 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-06 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 857 FT8 messages attributed to YO3JR as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (83%), followed by 10 m (17%). Most decodes (59%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-10-03 12:49 UTC
Observed FT8 message patterns
- Attributed sample
- 857 messages
- Active dates
- 25 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -15 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 73, moderate (-15 to -9 dB) 215, strong (≥ -8 dB) 569.
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 YO3JR in decoded directed-looking exchanges:
Most frequent locator attributed to YO3JR
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 · 522 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 721 km (approx.)
- Last such locator decoded
- 2026-10-03 12:49 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 | YO3JR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-05 18:16 | 10m | - / -5 | IU8LPE | -16 / - | 3 | ✓ Closing fragment |
| 08-23 18:40 | 20m | - / - | G8OO | +7 / - | 3 | Partial capture |
| 08-23 18:28 | 20m | - / -7 | BH4ECL | -8 / - | 2 | Partial capture |
| 08-23 17:59 | 20m | -14 / +2 | OE9RRI | -21 / -17 | 3 | Partial capture |
| 08-23 17:55 | 20m | - / - | BH4ECL | -16 / - | 2 | Partial capture |
| 08-23 17:55 | 20m | -14 / +1 | OE9RWH | -7 / -18 | 5 | ✓ Full exchange observed |
| 08-23 17:53 | 20m | - / - | ON7AC | -5 / - | 5 | Partial capture |
| 08-23 17:52 | 20m | -14 / - | RX1AB | - / -19 | 2 | Partial capture |
| 08-23 17:38 | 20m | - / -8 | RX3VF | +3 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 105945 -15 798 YO3JR 7Z1BQ R+00 123900 -24 2155 CQ YO3JR KN34 (x2) 113930 -18 2029 YO3JR UN7PNF 73 181615 -17 1245 YO3JR IU8LPE JM89 (x3) 112315 -15 2184 YO3JR CT2GQA 73 094045 -16 1088 YO3JR EP2AES 73
UTC dB Audio Message 180130 -13 2527 OE9RRI YO3JR R-17 180200 -13 2527 CQ YO3JR KN34 (x5) 182815 -8 1077 YO3JR BH4ECL PM01 (x2) 183015 +2 758 YO3JR M9DNC JO01 183145 -15 2626 YO3JR JA9ELE PM86 183300 +1 2528 DL6RS YO3JR -21 183330 +3 2528 CQ YO3JR KN34 184045 +8 643 YO3JR G8OO JO02 (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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