RU9UC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RU9UC, decoded by SO8OO in southeastern Poland. 90 FT8 messages attributed to this token as transmitter, on 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-17 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 90 FT8 messages attributed to RU9UC as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (49%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -3 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 90 messages
- Active dates
- 10 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -15 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 28, strong (≥ -8 dB) 57.
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 RU9UC 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 RU9UC
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
- NO33 · 27 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 4,351 km (approx.)
- Last such locator decoded
- 2026-08-29 05:14 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 | RU9UC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-05 23:01 | 40m | - / -9 | RW3SB | -2 / - | 2 | Partial capture |
| 08-29 05:14 | 20m | 0 / - | YO5PHL | - / -20 | 2 | ✓ Closing fragment |
| 08-29 05:12 | 20m | 0 / - | R6FMK | - / -9 | 2 | ✓ Closing fragment |
| 08-29 05:09 | 20m | -6 / - | IK6DLK | - / -8 | 2 | ✓ Closing fragment |
| 08-29 05:08 | 20m | +4 / - | R3YK | - / +3 | 2 | ✓ Closing fragment |
| 08-29 05:03 | 20m | -12 / - | RA3LBW | - / +7 | 2 | ✓ Closing fragment |
| 08-29 04:54 | 20m | - / - | EA5HEU | -9 / - | 3 | ✓ Closing fragment |
| 08-29 04:48 | 20m | -11 / - | HA5LB | - / - | 3 | Partial capture |
| 08-29 04:47 | 20m | -11 / - | RG1L | - / -13 | 2 | ✓ Closing fragment |
| 08-28 10:42 | 10m | - / -2 | IZ4TOA | -4 / - | 2 | ✓ Closing fragment |
| 08-28 09:33 | 10m | - / - | 9A3K | -12 / - | 3 | Partial capture |
| 08-25 13:10 | 20m | +2 / - | PD2DK | - / -12 | 4 | ✓ Closing fragment |
| 08-25 13:08 | 20m | 0 / - | RC6OZ | -12 / -1 | 3 | ✓ Closing observed |
| 08-25 13:07 | 20m | -1 / -10 | GM3AND | -4 / -11 | 5 | ✓ Full exchange observed |
| 08-25 13:06 | 20m | - / -14 | 2I0WMN | -8 / - | 3 | Partial capture |
| 08-25 13:03 | 20m | 0 / -19 | F5IXN | +14 / -11 | 6 | ✓ Full exchange observed |
| 08-25 13:02 | 20m | +2 / - | BG0DRM | - / +4 | 2 | ✓ Closing fragment |
| 08-25 13:00 | 20m | 0 / - | HB9SDO | -10 / -23 | 3 | Partial capture |
| 08-25 12:59 | 20m | +2 / -9 | TA3TK | -7 / -6 | 4 | ✓ Full exchange observed |
| 08-25 11:47 | 20m | -5 / - | PD4RJ | - / -19 | 3 | Partial capture |
| 08-24 10:09 | 10m | - / -11 | F4BYF | -17 / - | 2 | ✓ Closing fragment |
| 08-24 10:08 | 10m | - / -7 | PD7RF | -12 / - | 5 | Partial capture |
| 08-17 10:39 | 10m | - / +3 | F5NBU | -6 / - | 3 | ✓ Closing fragment |
| 08-17 10:22 | 10m | - / - | F5GPE | -12 / - | 2 | Partial capture |
| 08-12 05:21 | 20m | - / - | YO5PHL | -5 / - | 2 | Partial capture |
| 08-12 05:17 | 20m | - / -7 | DH2RL | +5 / - | 4 | ✓ Closing fragment |
| 08-12 05:12 | 20m | - / - | DL1R | -6 / - | 2 | Partial capture |
| 08-12 05:08 | 20m | - / -7 | EA5XA | -6 / - | 2 | Partial capture |
| 08-06 23:02 | 20m | - / - | KB3CCJ | -1 / - | 2 | Partial capture |
| 08-06 22:54 | 20m | -14 / - | LU3YZ | - / -15 | 2 | Partial capture |
| 08-06 09:37 | 20m | - / - | IK4LZH | +10 / - | 4 | Partial capture |
| 07-28 20:35 | 20m | - / -9 | M0WRB | -4 / - | 3 | ✓ Closing fragment |
| 07-28 20:31 | 20m | - / -4 | DL7DO | -10 / - | 2 | ✓ Closing fragment |
| 07-28 14:16 | 20m | - / -21 | M7NXS | -14 / - | 2 | ✓ Closing fragment |
| 07-28 14:16 | 20m | - / - | RA4Y | 0 / - | 4 | Partial capture |
| 07-28 13:51 | 20m | - / - | F4HSB | -23 / - | 2 | Partial capture |
| 07-28 13:47 | 20m | - / -10 | IZ8EYN | -9 / - | 5 | Partial capture |
| 07-27 15:27 | 20m | -17 / -1 | RU6UR | -14 / -1 | 3 | Partial capture |
| 07-27 15:12 | 20m | - / 0 | PD0RDD | -14 / - | 2 | Partial capture |
| 07-20 10:45 | 10m | - / - | R7OV | -11 / - | 2 | ✓ Closing fragment |
| 07-14 20:53 | 20m | - / -12 | CR7BUJ | -17 / - | 3 | ✓ Closing fragment |
| 07-13 14:57 | 20m | -12 / - | CN2DX | -19 / - | 2 | ✓ Closing observed |
| 07-13 14:15 | 20m | - / - | F5IXN | -12 / - | 2 | Partial capture |
| 07-08 12:53 | 20m | - / - | US1EA | -12 / - | 2 | ✓ Closing fragment |
| 07-08 12:49 | 20m | - / -12 | IV3JER | -4 / - | 2 | ✓ Closing fragment |
| 07-07 12:36 | 20m | - / - | DL1R | -1 / - | 8 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 230130 +0 2573 RU9UC RW3SB -09 (x2)
UTC dB Audio Message 050745 -10 2495 UN9GAM RU9UC RR73 050815 -5 2495 RO6G RU9UC 73 050845 +3 2495 R3YK RU9UC +03 (x2) 050945 -3 2495 IK6DLK RU9UC -08 (x2) 051045 +6 2495 CQ RU9UC NO33 (x3) 051215 -4 2495 R6FMK RU9UC -09 (x2) 051345 +10 2495 CQ RU9UC NO33 (x2) 051445 -1 2495 YO5PHL RU9UC -20 (x2)
UTC dB Audio Message 104015 -8 793 RU9UC F5NBU R+03 (x2) 104345 -4 491 RU9UC IK4LZH JN54 100815 -12 829 RU9UC PD7RF -07 (x3) 100915 -17 2287 RU9UC F4BYF -11 (x2) 101015 -13 1258 RU9UC PD7RF -07 (x2) 093345 -9 2561 RU9UC 9A3K JN65 (x3) 104245 +1 610 RU9UC IZ4TOA R-02 (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.
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