RU9CK — 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 RU9CK, decoded by SO8OO in southeastern Poland. 627 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-11-05.
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 627 FT8 messages attributed to RU9CK as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (85%), followed by 20 m (11%) and 40 m (4%). Most decodes (73%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-11-05 02:57 UTC
Observed FT8 message patterns
- Attributed sample
- 627 messages
- Active dates
- 28 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -17.3 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 122, moderate (-15 to -9 dB) 282, strong (≥ -8 dB) 223.
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 RU9CK 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 RU9CK
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
- MO06 · 291 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,670 km (approx.)
- Last such locator decoded
- 2026-11-05 02:57 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 | RU9CK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 02:57 | 80m | - / - | IU2THY | +10 / - | 3 | Partial capture |
| 11-05 02:57 | 80m | - / - | ON8WR | -5 / - | 3 | Partial capture |
| 11-05 02:53 | 80m | - / - | SP8HDC | -2 / - | 2 | Partial capture |
| 11-05 02:52 | 80m | -10 / - | R7LA | +4 / -8 | 3 | ✓ Closing observed |
| 11-05 02:45 | 160m | - / -9 | RU3GF | +20 / - | 2 | ✓ Closing fragment |
| 11-04 17:01 | 160m | - / -13 | RV3LO | -10 / - | 2 | ✓ Closing fragment |
| 11-04 16:28 | 160m | - / -7 | UA3GIE | +4 / - | 2 | ✓ Closing fragment |
| 11-04 16:09 | 80m | -6 / - | RA1QCX | - / -17 | 2 | Partial capture |
| 11-04 16:03 | 80m | -12 / - | RU4CK/P | - / -12 | 2 | ✓ Closing fragment |
| 11-04 15:57 | 80m | - / -16 | F4EZJ | -9 / - | 7 | Partial capture |
| 10-30 20:11 | 160m | - / -17 | EW4M | +23 / - | 3 | ✓ Closing fragment |
| 10-30 20:06 | 160m | - / -13 | R2LAD | -10 / - | 2 | ✓ Closing fragment |
| 10-30 20:03 | 160m | - / - | RA3WY | -7 / - | 2 | Partial capture |
| 10-30 14:01 | 40m | - / -5 | R6OGV | -10 / - | 2 | ✓ Closing fragment |
| 10-26 15:40 | 80m | -20 / - | JG1EIQ | - / -11 | 3 | ✓ Closing fragment |
| 10-26 15:39 | 80m | -22 / - | OK2BUZ | +14 / +1 | 6 | Partial capture |
| 10-26 14:56 | 80m | -12 / -6 | RA3RPJ | -12 / -3 | 4 | ✓ Full exchange observed |
| 10-26 14:54 | 80m | -11 / -18 | HA8CE | +4 / -13 | 5 | ✓ Full exchange observed |
| 10-26 14:54 | 80m | -14 / - | JA8UBV | - / -7 | 2 | ✓ Closing fragment |
| 10-25 04:04 | 40m | - / -18 | UA6AR | 0 / - | 2 | ✓ Closing fragment |
| 10-25 04:00 | 40m | - / -10 | RD3FY | -15 / - | 3 | ✓ Closing fragment |
| 10-23 19:01 | 80m | -6 / - | JJ2IJU | - / 0 | 2 | ✓ Closing fragment |
| 10-23 19:00 | 80m | -4 / -10 | DL8UNO | +9 / -14 | 11 | ✓ Full exchange observed |
| 10-23 19:00 | 80m | - / - | OM8AND | +9 / - | 3 | Partial capture |
| 10-23 18:58 | 80m | -4 / - | JH7CSU | - / -3 | 2 | ✓ Closing fragment |
| 10-23 18:56 | 80m | - / - | TA2PYZ | -18 / - | 2 | Partial capture |
| 10-23 18:55 | 80m | -5 / -10 | R1FD | +22 / -3 | 5 | ✓ Full exchange observed |
| 10-23 18:53 | 80m | -4 / -12 | SP9PLK | +16 / -11 | 5 | ✓ Full exchange observed |
| 10-23 18:50 | 160m | - / - | RM5F | +4 / - | 5 | Partial capture |
| 10-23 18:50 | 80m | -2 / - | UB6OAK | - / - | 2 | ✓ Closing fragment |
| 10-23 18:48 | 80m | -6 / -18 | SP4MPB | +4 / -16 | 7 | ✓ Full exchange observed |
| 10-23 18:45 | 80m | -9 / - | JA0LFV | - / -5 | 2 | ✓ Closing fragment |
| 10-23 18:45 | 80m | -11 / - | UB6OAK | -12 / -15 | 3 | Partial capture |
| 10-23 18:44 | 80m | -1 / -16 | I8IGS | -6 / -12 | 3 | Partial capture |
| 10-23 18:43 | 160m | - / - | RM5F | 0 / - | 6 | Partial capture |
| 10-23 18:42 | 80m | -4 / - | JK2TTP | - / -8 | 2 | ✓ Closing fragment |
| 10-23 18:40 | 80m | - / - | DO1RBH | -2 / - | 2 | Partial capture |
| 10-23 18:39 | 80m | - / -13 | UB6HQQ | -19 / - | 3 | Partial capture |
| 10-23 18:38 | 80m | - / - | HA9RQ | -3 / - | 4 | Partial capture |
| 10-23 18:37 | 80m | -10 / - | R4PEQ | - / -13 | 3 | ✓ Closing fragment |
| 10-23 17:59 | 160m | - / -10 | RY3K | +6 / - | 2 | ✓ Closing fragment |
| 10-23 17:48 | 160m | - / -22 | IZ7NLJ | -10 / - | 4 | ✓ Closing fragment |
| 10-23 17:38 | 160m | - / -24 | RA6FC | -16 / - | 2 | Partial capture |
| 10-23 17:21 | 160m | - / -21 | RD7X | -17 / - | 2 | Partial capture |
| 10-23 16:55 | 160m | - / -16 | RU3XU | -15 / - | 3 | ✓ Closing fragment |
| 10-23 15:53 | 160m | - / - | F6GHG | -18 / - | 3 | Partial capture |
| 10-23 14:26 | 80m | - / -13 | RD7X | -14 / - | 2 | ✓ Closing fragment |
| 10-22 19:23 | 80m | - / - | R5BS | +5 / - | 3 | ✓ Closing fragment |
| 10-22 19:18 | 80m | - / - | DL8UNO | +13 / - | 3 | Partial capture |
| 10-22 19:17 | 80m | -5 / -12 | YT5DL | +11 / -15 | 9 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 025315 -9 2486 R7LA RU9CK RR73 025330 -4 2486 RU9CK SP8HDC KO00 025330 +4 1207 RU9CK R7LA 73 025345 -8 2485 CQ RU9CK MO06 (x2) 025430 -1 2486 RU9CK SP8HDC KO00 025430 -16 1703 RU9CK GB1RBL -20 025615 -9 2484 RV9WJP RU9CK -19 025715 -9 2484 CQ RU9CK MO06 025730 -2 2484 RU9CK ON8WR JO11 025730 +11 2717 RU9CK IU2THY JN45 025800 -5 2484 RU9CK ON8WR JO11 025800 +11 2717 RU9CK IU2THY JN45 025830 -7 2484 RU9CK ON8WR JO11 025830 +7 2717 RU9CK IU2THY JN45
UTC dB Audio Message 200345 -9 1502 RU9CK RA3WY KO81 (x2) 200645 -9 2235 RU9CK R2LAD -13 (x2) 200945 -21 916 RU9CK RV3V R-13 201115 +26 2802 RU9CK EW4M KO23 (x3) 210830 -12 406 RU9CK UB3ANV KO88 162815 +7 2835 RU9CK UA3GIE R-07 (x2) 170100 -10 1263 RU9CK RV3LO R-13 (x2) 024530 +19 2845 RU9CK RU3GF R-09 (x2)
UTC dB Audio Message 022130 +6 2235 RU9CK R7OF R-04 (x2) 031230 -19 1884 RU9CK C5R R-19 051215 +3 686 RU9CK RD6OX 73 040030 -16 2114 RU9CK RD3FY KO85 040100 +6 1135 RU9CK UA6AR R-12 040100 -13 2114 RU9CK RD3FY R-10 (x2) 040430 +1 1135 RU9CK UA6AR R-18 (x2) 140130 -11 1389 RU9CK R6OGV R-05 (x2) 040345 -12 2340 RU9CK R4ADE R+04 040915 -21 1801 RU9CK R3MW 73 040945 -16 1592 RU9CK RV6F LN14
UTC dB Audio Message 093915 -18 1088 RU9CK EP2AES 73
UTC dB Audio Message 032930 -7 351 RU9CK TA3NK KM39 (x7) 030900 -8 2629 CQ RU9CK MO06 (x4) 033145 -16 2240 RU9CK ZP5DBC 73 031500 -16 1982 ZL4TT RU9CK -14 (x2) 031600 -14 1981 CQ RU9CK MO06
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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee