YU1JB — 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 YU1JB, decoded by SO8OO in southeastern Poland. 134 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-08-29.
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 134 FT8 messages attributed to YU1JB as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (88%), followed by 10 m (12%). Several six-hour UTC windows tied for the largest share (85%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (67%); the estimated median was -12 dB.
Overview
Bands
Last attributed message: 2026-08-29 16:18 UTC
Observed FT8 message patterns
- Attributed sample
- 134 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -18 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 27, moderate (-15 to -9 dB) 90, strong (≥ -8 dB) 17.
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 YU1JB 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 YU1JB
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
- KN05 · 31 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 497 km (approx.)
- Last such locator decoded
- 2026-08-26 12:04 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 | YU1JB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-20 12:43 | 10m | - / -2 | EA7GHD | -15 / - | 4 | ✓ Closing fragment |
| 10-20 11:35 | 10m | - / - | CR7BUW | -12 / - | 2 | ✓ Closing fragment |
| 10-17 12:45 | 10m | - / - | CS7BMX | -16 / - | 3 | ✓ Closing fragment |
| 10-17 12:10 | 10m | - / - | CT7AUT | -12 / - | 4 | ✓ Closing fragment |
| 10-17 12:07 | 10m | - / -4 | EA7O | +4 / - | 2 | ✓ Closing fragment |
| 10-17 11:17 | 10m | - / -16 | IU8RHZ | -11 / - | 5 | ✓ Closing fragment |
| 10-13 16:00 | 10m | - / - | CT7AUT | -12 / - | 2 | ✓ Closing fragment |
| 10-13 15:14 | 10m | - / 0 | CS7BPG | -15 / - | 3 | ✓ Closing fragment |
| 10-09 14:04 | 10m | - / - | CT1FAC | -8 / - | 2 | Partial capture |
| 09-25 12:02 | 10m | - / -4 | CR7BRV | +10 / - | 4 | ✓ Closing fragment |
| 08-29 16:34 | 20m | - / - | IK2GSR | -12 / - | 2 | Partial capture |
| 08-29 16:22 | 20m | - / -20 | BD4WBT | -15 / - | 4 | ✓ Closing fragment |
| 08-26 12:06 | 20m | - / - | IW5ALZ | -5 / - | 4 | Partial capture |
| 08-26 12:01 | 20m | -18 / - | DL9MY | 0 / - | 5 | ✓ Closing observed |
| 08-26 11:36 | 20m | - / +3 | IW5ALZ | -4 / - | 8 | Partial capture |
| 08-26 11:36 | 20m | - / +3 | PI4TX | -12 / - | 3 | ✓ Closing fragment |
| 08-19 14:14 | 10m | - / +5 | HB3YOY | -20 / - | 2 | ✓ Closing fragment |
| 08-19 13:26 | 10m | - / - | S59MA | -6 / - | 6 | ✓ Closing fragment |
| 08-19 13:21 | 10m | - / -7 | IW1PRT | -14 / - | 4 | Partial capture |
| 08-17 18:35 | 10m | - / -13 | R6YBU | -16 / - | 2 | Partial capture |
| 08-16 17:43 | 20m | - / -4 | 7X3WPL | -11 / - | 2 | ✓ Closing fragment |
| 08-16 16:13 | 20m | - / - | TA3NK | -12 / - | 2 | Partial capture |
| 08-16 15:51 | 20m | -14 / - | AI0Y | - / -13 | 2 | Partial capture |
| 08-16 11:16 | 10m | - / -14 | PD2V | -3 / - | 2 | ✓ Closing fragment |
| 08-15 12:37 | 20m | - / - | PD9FLX | -18 / - | 3 | Partial capture |
| 08-12 18:05 | 20m | - / - | OO0O | -12 / - | 2 | Partial capture |
| 08-12 13:54 | 20m | - / -13 | DK3HV | -15 / - | 3 | ✓ Closing fragment |
| 08-12 13:47 | 20m | -18 / - | AP2TN | - / -18 | 2 | Partial capture |
| 08-10 12:59 | 10m | - / - | R6LE | -18 / - | 2 | ✓ Closing fragment |
| 08-09 17:28 | 20m | - / +4 | UT4QM | -18 / - | 3 | ✓ Closing fragment |
| 08-09 17:15 | 20m | - / +1 | DL5EBS | +6 / - | 5 | ✓ Closing fragment |
| 08-06 18:39 | 20m | - / - | RZ4FWA | -9 / - | 3 | Partial capture |
| 08-06 12:31 | 20m | - / - | G0TAA | -18 / - | 2 | Partial capture |
| 08-06 12:31 | 20m | - / - | OK2CNI | 0 / - | 2 | Partial capture |
| 08-05 14:08 | 20m | - / - | F6ARS | -1 / - | 3 | ✓ Closing fragment |
| 08-05 14:07 | 20m | - / - | RZ4FWA | -12 / - | 4 | Partial capture |
| 08-05 14:03 | 20m | - / - | F1PPH | -21 / - | 2 | ✓ Closing fragment |
| 08-05 14:03 | 20m | - / 0 | M0EGG | -17 / - | 3 | Partial capture |
| 08-05 13:51 | 20m | - / - | M7NXS | -9 / - | 3 | Partial capture |
| 08-02 11:24 | 20m | - / +2 | F5PEG | -3 / - | 2 | ✓ Closing fragment |
| 08-02 11:21 | 20m | - / -16 | M0PFX | -14 / - | 2 | ✓ Closing fragment |
| 08-02 11:21 | 20m | - / -19 | UA6AOP | -11 / - | 4 | ✓ Closing fragment |
| 08-02 11:19 | 20m | - / - | R6LPF | -14 / - | 2 | ✓ Closing fragment |
| 08-02 11:08 | 20m | - / - | RA6OY | +3 / - | 5 | ✓ Closing fragment |
| 08-02 10:49 | 10m | - / +1 | EA8UP | -18 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 121115 -13 1510 YU1JB CT7AUT IM67 (x3) 124515 -18 1093 YU1JB CS7BMX IM67 (x3) 152245 -24 1405 YU1JB CR7BTF +02 162300 -6 1598 YU1JB CS7BPG IN51 113500 -9 2495 YU1JB CR7BUW R+13 (x2) 123145 -19 1127 YU1JB PY1EW GG87 124345 -21 1482 YU1JB EA7GHD IM66 (x4)
UTC dB Audio Message 120400 -16 1168 CQ DX YU1JB KN05 120515 -15 1168 YU1JB G7LMY IO90 120615 -6 3040 YU1JB IW5ALZ JN53 120645 -18 1167 YU1JB M9SDD IO83 120715 -4 3040 YU1JB IW5ALZ JN53 (x3) 161815 -17 691 WB3FAA YU1JB -14 161930 -13 1901 YU1JB BD4WBT R-20 (x5) 163430 -12 769 YU1JB IK2GSR JN45 (x2)
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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