C91RU — 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 C91RU, decoded by SO8OO in southeastern Poland. 282 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-22.
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 282 FT8 messages attributed to C91RU as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (60%), followed by 20 m (40%). The busiest six-hour window was 12:00-18:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.5 dB.
Overview
Bands
Last attributed message: 2026-10-22 15:44 UTC
Observed FT8 message patterns
- Attributed sample
- 282 messages
- Active dates
- 14 UTC dates
- Estimated median S/N
- -8.5 dB
- Estimated 10th-90th percentile
- -13 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 134, strong (≥ -8 dB) 141.
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 C91RU 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 C91RU
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
- KG54 · 35 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,438 km (approx.)
- Last such locator decoded
- 2026-10-22 10:22 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 | C91RU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 12:38 | 10m | - / -1 | SP8MO | -20 / - | 2 | Partial capture |
| 10-22 12:28 | 10m | - / - | SP8MO | -18 / - | 2 | Partial capture |
| 10-21 15:13 | 10m | -9 / - | HA5KY | - / -3 | 2 | Partial capture |
| 10-21 15:07 | 10m | -10 / - | K8OOK | - / -11 | 2 | ✓ Closing fragment |
| 10-21 12:26 | 10m | - / - | CT2IAL | -15 / - | 3 | Partial capture |
| 10-21 12:12 | 10m | - / - | CT2IAL | -10 / - | 3 | Partial capture |
| 10-21 11:40 | 10m | - / 0 | EA5S | -11 / - | 5 | ✓ Closing fragment |
| 10-21 11:18 | 10m | - / -11 | PY5HOT | -10 / - | 3 | ✓ Closing fragment |
| 10-21 10:17 | 10m | - / -7 | CT3IQ | -24 / - | 2 | ✓ Closing fragment |
| 10-21 09:46 | 10m | - / -5 | EA7HRI | -18 / - | 3 | Partial capture |
| 10-19 16:47 | 10m | - / - | CT7AUT | -5 / - | 6 | Partial capture |
| 10-19 16:30 | 10m | - / - | CT7AUT | -7 / - | 3 | Partial capture |
| 10-19 15:21 | 10m | -7 / - | DF4BR | - / -1 | 2 | Partial capture |
| 10-19 14:05 | 10m | - / - | TF4M | -15 / - | 4 | Partial capture |
| 10-18 15:42 | 10m | - / -17 | EC7B | -14 / - | 8 | Partial capture |
| 10-18 13:12 | 10m | - / -2 | DG8DQ | -8 / - | 7 | ✓ Closing fragment |
| 10-18 11:14 | 10m | - / -14 | DL1MBG | -10 / - | 6 | Partial capture |
| 10-17 15:53 | 10m | - / - | EA7HCG | -7 / - | 4 | Partial capture |
| 10-17 15:40 | 10m | - / - | CT7AUT | -11 / - | 5 | Partial capture |
| 10-17 15:37 | 10m | - / -13 | EA7HCG | -7 / - | 6 | Partial capture |
| 10-17 15:30 | 10m | - / -13 | EA7HCG | -7 / - | 7 | Partial capture |
| 10-17 13:46 | 10m | - / - | KO8SCA | -15 / - | 5 | Partial capture |
| 10-17 12:37 | 10m | - / - | SM7TKR | -14 / - | 3 | Partial capture |
| 10-17 12:30 | 10m | - / +4 | IZ8CPZ | -8 / - | 4 | Partial capture |
| 10-17 12:11 | 10m | - / +4 | EA7O | -16 / - | 2 | ✓ Closing fragment |
| 10-17 09:54 | 10m | - / - | CT7AUT | -17 / - | 3 | Partial capture |
| 10-17 09:51 | 10m | - / -10 | OV2B | 0 / - | 5 | ✓ Closing fragment |
| 10-17 08:36 | 10m | - / -17 | F5PAC | -16 / - | 2 | ✓ Closing fragment |
| 10-17 08:25 | 10m | - / - | OH3EZ | -13 / - | 2 | Partial capture |
| 10-17 08:23 | 10m | - / - | YL3MM | -4 / - | 6 | Partial capture |
| 10-17 08:17 | 10m | - / - | YL3MM | -11 / - | 4 | Partial capture |
| 10-16 15:15 | 10m | - / - | PT7YV | -16 / - | 2 | ✓ Closing fragment |
| 10-16 14:59 | 10m | - / -12 | EA1CTT | -5 / - | 4 | ✓ Closing fragment |
| 10-16 10:53 | 10m | - / -24 | EB5DQ | -7 / - | 3 | ✓ Closing fragment |
| 10-16 09:57 | 10m | - / - | CT1CDU | -14 / - | 4 | Partial capture |
| 10-15 04:50 | 40m | - / - | UA3IKI | +2 / - | 13 | Partial capture |
| 10-15 04:45 | 40m | - / - | UA3IKI | +2 / - | 5 | Partial capture |
| 10-15 04:42 | 40m | - / - | UA3IKI | +5 / - | 2 | Partial capture |
| 10-13 15:46 | 10m | -6 / - | K0GD | - / -12 | 2 | Partial capture |
| 10-13 15:44 | 10m | -4 / - | SQ8EFK | - / +1 | 3 | Partial capture |
| 10-13 15:39 | 10m | +2 / - | IU0RKJ | - / -16 | 2 | ✓ Closing fragment |
| 10-13 15:36 | 10m | -5 / - | NP4EB | - / 0 | 2 | ✓ Closing fragment |
| 10-13 15:30 | 10m | -4 / - | SP2KKB | - / +2 | 2 | ✓ Closing fragment |
| 10-13 15:27 | 10m | 0 / - | DL3HWD | - / -11 | 2 | Partial capture |
| 10-13 15:26 | 10m | -1 / - | SP3VSC | - / -10 | 3 | ✓ Closing fragment |
| 10-13 15:25 | 10m | -1 / - | M7GFJ | - / - | 2 | ✓ Closing fragment |
| 10-13 15:22 | 10m | -1 / - | YU4STE | - / -3 | 2 | Partial capture |
| 10-13 15:19 | 10m | 0 / - | WB0OQV | - / -12 | 2 | ✓ Closing fragment |
| 10-13 15:15 | 10m | -4 / - | W6NWS | - / -13 | 2 | Partial capture |
| 10-13 15:14 | 10m | -2 / - | K2PSD | - / -17 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 150800 -8 403 K8OOK C91RU RR73 151300 -9 404 HA5KY C91RU -03 (x2) 155030 -9 410 KD4S C91RU -19 102200 -11 357 CQ C91RU KG54 a1 102230 -9 357 9A7V C91RU -04 122845 -19 1207 C91RU SP8MO KN09 (x4) 153430 -8 414 LZ3SV C91RU -06 153530 -7 413 SP3HUU C91RU RR73 153730 -9 415 DL1NB C91RU -08 153900 -10 415 EA7KOM C91RU RR73 154430 -10 417 F8BFU C91RU -18
UTC dB Audio Message 044745 +7 2906 C91RU UA3IKI KO76 (x15)
UTC dB Audio Message 171045 -19 999 C91RU LU8ENU -13 (x3)
UTC dB Audio Message 174715 -14 2234 C91RU F1UGD IN94 (x10)
UTC dB Audio Message 212415 +0 2377 C91RU N1NK FN41 (x2) 214645 -6 616 C91RU NX4RH FM18 (x8) 221145 +10 360 C91RU UA6CE -20 (x2) 221445 -10 1007 C91RU OH4LRP KP32 (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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