YO9CSM — 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 YO9CSM, decoded by SO8OO in southeastern Poland. 382 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 38 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-30.
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 382 FT8 messages attributed to YO9CSM as the transmitting token by decoded message structure across 38 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (71%), followed by 20 m (27%) and 80 m (2%). Several six-hour UTC windows tied for the largest share (90%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +3 dB.
Overview
Bands
Last attributed message: 2026-10-30 05:38 UTC
Observed FT8 message patterns
- Attributed sample
- 382 messages
- Active dates
- 38 UTC dates
- Estimated median S/N
- +3 dB
- Estimated 10th-90th percentile
- -7 to +12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 354.
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 YO9CSM 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 YO9CSM
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
- KN23 · 255 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 756 km (approx.)
- Last such locator decoded
- 2026-10-30 05:36 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 | YO9CSM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 05:38 | 40m | - / - | UA4FKT | -4 / - | 4 | Partial capture |
| 10-30 05:36 | 40m | +3 / - | TC2TR | - / -6 | 3 | ✓ Closing fragment |
| 10-30 05:35 | 40m | - / - | UA4FKT | +2 / - | 2 | Partial capture |
| 10-30 05:33 | 40m | +4 / - | TC9ATA | - / -22 | 2 | Partial capture |
| 10-30 05:31 | 40m | -1 / - | TC8ATA | - / - | 2 | Partial capture |
| 10-30 05:29 | 40m | +2 / - | TC4TR | - / -12 | 3 | ✓ Closing fragment |
| 10-22 04:20 | 40m | - / -5 | CT9/DF7EE | -9 / - | 5 | Partial capture |
| 10-17 04:39 | 40m | -1 / - | TI2SD | - / - | 2 | Partial capture |
| 10-17 04:37 | 40m | - / - | RZ4FWA | -20 / - | 2 | Partial capture |
| 10-17 04:34 | 40m | +3 / - | TI2SD | - / - | 3 | Partial capture |
| 10-17 04:32 | 40m | +3 / - | Z35Z | - / - | 2 | Partial capture |
| 10-15 04:56 | 40m | +6 / - | 4J3DJ | - / -12 | 6 | ✓ Closing fragment |
| 10-15 04:52 | 40m | +5 / - | F5OYA/P | -13 / -4 | 5 | ✓ Closing observed |
| 10-15 04:48 | 40m | +6 / - | C5R | - / -17 | 7 | ✓ Closing fragment |
| 10-15 04:48 | 40m | +6 / -1 | IZ6BYS | -16 / -1 | 5 | ✓ Full exchange observed |
| 10-15 04:45 | 40m | +7 / -2 | GU4WRP | -8 / -19 | 8 | ✓ Full exchange observed |
| 10-15 04:41 | 40m | +8 / -14 | 5B4AMM | -18 / -2 | 5 | ✓ Full exchange observed |
| 10-15 04:39 | 40m | +9 / - | EP2AES | - / -11 | 3 | Partial capture |
| 10-09 15:29 | 40m | +4 / - | F6FHZ | -13 / -15 | 3 | ✓ Closing observed |
| 10-09 15:26 | 40m | +7 / - | 4O/DL1FDH | - / +4 | 3 | Partial capture |
| 10-09 04:59 | 40m | +10 / -12 | YO9PH | +7 / - | 3 | ✓ Closing observed |
| 10-09 04:55 | 40m | +12 / - | YO5ODL | - / - | 3 | Partial capture |
| 10-07 04:55 | 40m | - / - | R6LKG | -14 / - | 4 | Partial capture |
| 10-07 04:55 | 40m | - / - | F6FHZ | -5 / - | 3 | Partial capture |
| 10-07 04:53 | 40m | +13 / -10 | YO3KWJ | -8 / -13 | 5 | ✓ Full exchange observed |
| 10-07 04:49 | 40m | +9 / -1 | CT3MD | -9 / 0 | 6 | ✓ Full exchange observed |
| 10-03 04:26 | 40m | +4 / - | W1JHK | - / - | 2 | Partial capture |
| 10-03 04:23 | 40m | +4 / - | K8SSN | - / - | 2 | Partial capture |
| 10-03 04:19 | 40m | +8 / - | K8SSN | - / - | 2 | Partial capture |
| 09-25 04:41 | 40m | - / - | UT5MB | +1 / - | 3 | Partial capture |
| 09-25 04:40 | 40m | -1 / -8 | OH3OJ | -10 / - | 2 | ✓ Closing observed |
| 09-25 04:39 | 40m | +1 / - | W5JAY | - / -8 | 3 | ✓ Closing fragment |
| 09-25 04:34 | 40m | -11 / - | R0QBB/3 | - / - | 4 | Partial capture |
| 09-25 04:25 | 80m | -1 / -10 | EA8SG | -10 / -10 | 8 | ✓ Full exchange observed |
| 09-25 04:23 | 80m | - / -10 | US2YW | +4 / - | 5 | ✓ Closing fragment |
| 09-25 04:22 | 80m | +2 / -25 | W4PSK | -3 / -11 | 3 | ✓ Full exchange observed |
| 09-23 04:46 | 40m | +10 / - | KK5JY | - / -19 | 2 | ✓ Closing fragment |
| 09-23 04:44 | 40m | +4 / - | K0SSD | - / -16 | 3 | ✓ Closing fragment |
| 09-23 04:35 | 40m | +14 / - | DL/PG1N | - / - | 4 | Partial capture |
| 09-23 04:33 | 40m | +6 / - | KA9FOX | - / - | 2 | Partial capture |
| 09-23 04:31 | 40m | +2 / - | VE9LS | - / - | 2 | Partial capture |
| 09-23 04:16 | 40m | +12 / - | K4AKA | - / -17 | 4 | ✓ Closing fragment |
| 09-18 04:40 | 40m | +6 / - | KD2TDA | - / - | 2 | Partial capture |
| 09-18 04:37 | 40m | +4 / - | 9H4JX | - / -5 | 3 | ✓ Closing fragment |
| 09-18 04:16 | 40m | +2 / - | YN9H | - / - | 7 | Partial capture |
| 09-16 15:59 | 40m | +6 / - | S79/DL2SBY | - / - | 2 | Partial capture |
| 09-16 15:55 | 40m | +4 / - | TK/4O7CC | - / - | 2 | Partial capture |
| 09-16 15:48 | 40m | +5 / - | S79/DL2SBY | - / -17 | 5 | Partial capture |
| 09-16 15:46 | 40m | +6 / - | IK3/UY7LA | - / - | 3 | Partial capture |
| 09-16 04:31 | 40m | - / +6 | IU8RFW | -2 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 053115 +0 2493 TC8ATA YO9CSM KN23 (x2) 053330 +4 2493 TC9ATA YO9CSM KN23 (x2) 053515 +0 2702 YO9CSM UA4FKT LO23 (x2) 053600 +8 2702 TC2TR YO9CSM KN23 (x3) 053800 +0 2702 K3RH YO9CSM RR73 053815 -3 2702 YO9CSM UA4FKT LO23 053815 -7 958 YO9CSM RC9WC -08 053845 -2 2702 YO9CSM UA4FKT LO23 (x3)
UTC dB Audio Message 123530 -10 2667 YO9CSM CS7BLU IM58
UTC dB Audio Message 042245 +2 2543 W4PSK YO9CSM R-11 042300 +2 345 YO9CSM W4PSK RR73 042330 +7 2543 YO9CSM US2YW KN28 (x5) 042545 +2 2543 EA8SG YO9CSM KN23 (x2) 042800 -10 2545 YO9CSM EA8SG -10 042815 -6 2543 EA8SG YO9CSM R-10 042830 -11 2544 YO9CSM EA8SG RR73 (x4)
UTC dB Audio Message 045600 -5 2752 EP2AES YO9CSM KN23 (x4) 151215 -8 2804 <...> YO9CSM KN23 151415 -11 2750 XU7O YO9CSM KN23 (x2) 044130 -13 2515 TI2FAF YO9CSM KN23 (x2) 045015 -2 2653 7Q7CT YO9CSM KN23 045515 +0 2627 VK1NC YO9CSM KN23 (x2) 045830 -16 2627 ZL2KR YO9CSM 73 050215 -3 2627 <...> YO9CSM KN23 (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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