RA9YJU — 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 RA9YJU, decoded by SO8OO in southeastern Poland. 775 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-07.
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 775 FT8 messages attributed to RA9YJU as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (91%), followed by 10 m (7%) and 80 m (2%). The busiest six-hour window was 02:00-08:00 UTC, containing 42% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-11-07 10:22 UTC
Observed FT8 message patterns
- Attributed sample
- 775 messages
- Active dates
- 26 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -15 to +4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 67, moderate (-15 to -9 dB) 181, strong (≥ -8 dB) 527.
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 RA9YJU 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 RA9YJU
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
- NO23 · 266 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 4,228 km (approx.)
- Last such locator decoded
- 2026-11-07 10:19 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 | RA9YJU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-07 10:23 | 10m | - / - | EA1FRB | -14 / - | 2 | Partial capture |
| 11-07 10:21 | 10m | +6 / - | PC5L | - / -10 | 2 | ✓ Closing fragment |
| 11-07 10:19 | 10m | -11 / - | SP7TF | - / -4 | 2 | ✓ Closing fragment |
| 11-07 09:12 | 10m | -2 / -10 | EA7KOM | +2 / -17 | 6 | ✓ Full exchange observed |
| 11-07 09:08 | 10m | -13 / - | DN9SGE | - / 0 | 4 | ✓ Closing fragment |
| 11-07 09:07 | 10m | -3 / - | SQ9BC | - / +1 | 2 | ✓ Closing fragment |
| 11-07 09:05 | 10m | -10 / - | SV2MJY | - / - | 3 | ✓ Closing fragment |
| 11-07 09:04 | 10m | -15 / -10 | CR7BUJ | +2 / -8 | 5 | Partial capture |
| 11-07 03:24 | 40m | - / -9 | UD8S | -20 / - | 2 | ✓ Closing fragment |
| 11-06 16:02 | 80m | - / - | RO1M | -11 / - | 2 | Partial capture |
| 11-06 15:58 | 80m | - / - | RO1M | +2 / - | 2 | Partial capture |
| 11-06 15:50 | 80m | - / -16 | RN1QK | -15 / - | 3 | ✓ Closing fragment |
| 11-06 09:03 | 10m | -10 / - | PD0NAH | - / -15 | 3 | ✓ Closing fragment |
| 11-06 09:01 | 10m | -12 / - | BI3XVS | - / -8 | 3 | Partial capture |
| 11-06 08:58 | 10m | -10 / - | ON8WR | - / -1 | 2 | ✓ Closing fragment |
| 11-06 08:48 | 10m | -13 / - | F5GPE | - / -7 | 3 | ✓ Closing fragment |
| 11-06 08:00 | 10m | +3 / - | RT6Z | - / -6 | 4 | ✓ Closing fragment |
| 11-06 07:56 | 10m | -5 / - | TA2LE | - / -10 | 2 | ✓ Closing fragment |
| 11-06 07:54 | 10m | -13 / - | EA5RJ | - / -2 | 4 | Partial capture |
| 11-06 07:53 | 10m | -2 / - | BH1VLK | - / +8 | 2 | ✓ Closing fragment |
| 11-06 07:51 | 10m | -20 / - | BG7BUM | - / -13 | 3 | Partial capture |
| 11-06 06:55 | 10m | - / -4 | 4X5MZ | +10 / - | 2 | ✓ Closing fragment |
| 11-02 16:03 | 80m | -21 / -16 | OH8CW | -13 / - | 2 | ✓ Closing observed |
| 11-02 14:46 | 80m | - / -12 | RA7T | -11 / - | 3 | ✓ Closing fragment |
| 11-02 14:15 | 80m | - / -3 | RU3GF | +13 / - | 2 | ✓ Closing fragment |
| 11-01 15:41 | 80m | - / -12 | R9FF | -6 / - | 2 | ✓ Closing fragment |
| 11-01 15:40 | 80m | - / -5 | UA1AEL | +6 / - | 2 | ✓ Closing fragment |
| 11-01 15:39 | 80m | - / -11 | R1BED | -12 / - | 2 | ✓ Closing fragment |
| 11-01 15:34 | 80m | - / - | RA1QCX | -15 / - | 3 | Partial capture |
| 11-01 15:29 | 80m | - / -18 | R2EA | -5 / - | 3 | Partial capture |
| 11-01 15:28 | 80m | - / -16 | RZ6CO | -11 / - | 3 | ✓ Closing fragment |
| 11-01 14:15 | 80m | - / -14 | UA3DPM | +2 / - | 3 | ✓ Closing fragment |
| 11-01 14:12 | 80m | - / - | UA4CKN | -16 / - | 2 | ✓ Closing fragment |
| 11-01 14:09 | 80m | - / -8 | UB4FGK | -12 / - | 3 | ✓ Closing fragment |
| 11-01 14:08 | 80m | - / - | RM1O | +3 / - | 2 | ✓ Closing fragment |
| 11-01 14:06 | 80m | - / -17 | RD5D | +5 / - | 3 | ✓ Closing fragment |
| 10-31 15:40 | 80m | -11 / -10 | R6ZE | -5 / -5 | 4 | ✓ Full exchange observed |
| 10-31 15:37 | 80m | - / -2 | 9A3K | +14 / - | 3 | ✓ Closing fragment |
| 10-31 15:37 | 80m | -10 / -12 | YO7CFD | +6 / -10 | 5 | ✓ Full exchange observed |
| 10-31 15:36 | 80m | - / -2 | RU4I | -14 / - | 2 | ✓ Closing fragment |
| 10-31 15:34 | 80m | - / -7 | RU3DNN | +6 / - | 3 | ✓ Closing fragment |
| 10-31 15:33 | 80m | -19 / -5 | RM8W | -16 / +8 | 4 | ✓ Full exchange observed |
| 10-30 15:29 | 80m | - / -4 | R2WAF | -8 / - | 3 | ✓ Closing fragment |
| 10-30 15:28 | 80m | - / -13 | RO5A | -3 / - | 2 | ✓ Closing fragment |
| 10-30 15:24 | 80m | -24 / - | R4AGO | - / -2 | 2 | Partial capture |
| 10-30 15:22 | 80m | - / -17 | R5ACQ | -1 / - | 2 | ✓ Closing fragment |
| 10-29 15:27 | 80m | - / -19 | RW6ASB | -8 / - | 3 | Partial capture |
| 10-29 15:26 | 80m | - / - | R7DX | +3 / - | 3 | Partial capture |
| 10-29 15:22 | 80m | - / -16 | 9A5E | +6 / - | 2 | ✓ Closing fragment |
| 10-28 14:39 | 80m | - / -18 | S59A | +12 / - | 7 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 091300 +0 2733 RA9YJU EA7KOM IM87 091315 -14 1753 DD6CS RA9YJU RR73 091330 +4 2733 RA9YJU EA7KOM IM87 091345 +2 2732 EA7KOM RA9YJU -17 091400 +0 2733 RA9YJU EA7KOM R-10 091415 -6 2733 EA7KOM RA9YJU RR73 091545 -6 399 ON3CCM RA9YJU RR73 101915 -9 1272 CQ RA9YJU NO23 101945 -7 1273 SP7TF RA9YJU R-04 (x2) 102115 +7 2924 PC5L RA9YJU -10 (x2) 102215 -1 562 S58T RA9YJU +00 102330 -15 1898 RA9YJU EA1FRB IN73 (x2)
UTC dB Audio Message 154745 -2 2595 RA9YJU RD3FY KO85 (x3) 154945 -2 2392 RA9YJU IK2ZJR JN45 155015 -11 746 RA9YJU RD3MF KO97 155015 -1 2391 RA9YJU IK2ZJR R-14 (x2) 155115 -2 925 RA9YJU RC6OZ KN98 010015 +7 586 RA9YJU UK8OM R-10 (x2) 010615 -20 884 RA9YJU RO6G -02 (x2) 143415 -24 1395 RA9YJU RY2B R-13 032415 -20 1691 RA9YJU UD8S R-09 (x2)
UTC dB Audio Message 141530 +11 2797 RA9YJU RU3GF R-03 (x2) 144630 -11 2231 RA9YJU RA7T -12 (x3) 160330 -13 2779 RA9YJU OH8CW R-16 160345 -21 2779 OH8CW RA9YJU RR73 155015 -11 1479 RA9YJU RN1QK R-16 (x3) 155815 -15 2524 R3HH RA9YJU RR73 155830 +2 213 RA9YJU RO1M KO59 (x4)
UTC dB Audio Message 094030 -10 2137 RA9YJU M1DDD IO93 094230 -15 2021 RA9YJU PA1PA JO22 (x4) 094430 -10 2923 RA9YJU 2W0YOX IO81 094830 -22 2022 RA9YJU PA1PA R-06 (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
No CW receptions recorded for this callsign in the last 30 days.
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