RA9CUA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RA9CUA, decoded by SO8OO in southeastern Poland. 55 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-06 and 2026-08-31.
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 55 FT8 messages attributed to RA9CUA as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (51%), followed by 40 m (49%). Several six-hour UTC windows tied for the largest share (75%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (67%); the estimated median was -14 dB.
Overview
Bands
Last attributed message: 2026-08-31 17:12 UTC
Observed FT8 message patterns
- Attributed sample
- 55 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -19 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 5.
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 RA9CUA 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 RA9CUA
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
- MO07 · 18 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,670 km (approx.)
- Last such locator decoded
- 2026-08-31 17:12 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 | RA9CUA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 16:43 | 40m | - / -9 | SP5LST | -7 / - | 3 | ✓ Closing fragment |
| 08-30 17:51 | 40m | -10 / -4 | UI6O | -4 / - | 3 | Partial capture |
| 08-30 17:35 | 40m | -15 / - | YO4LUP | - / - | 2 | Partial capture |
| 08-30 17:32 | 40m | - / -5 | EU6UE | -6 / - | 2 | ✓ Closing fragment |
| 08-30 17:29 | 40m | -14 / - | F5RMK | - / - | 3 | Partial capture |
| 08-30 17:26 | 40m | -17 / - | UA3POG | -14 / -2 | 2 | ✓ Closing observed |
| 08-30 17:24 | 40m | -14 / - | R1BED | - / - | 2 | ✓ Closing fragment |
| 08-30 17:24 | 40m | - / -6 | RA3TKS | +4 / - | 2 | Partial capture |
| 08-30 17:16 | 40m | - / -2 | UA4HBJ | -6 / - | 2 | ✓ Closing fragment |
| 08-30 17:13 | 40m | -17 / - | R3UDU | - / +2 | 3 | ✓ Closing fragment |
| 08-30 17:11 | 40m | -11 / -8 | R3XBS | +4 / - | 2 | Partial capture |
| 08-29 14:12 | 20m | -13 / -3 | 4Z5PT | -7 / -4 | 4 | ✓ Full exchange observed |
| 08-28 07:50 | 10m | - / - | 9A3K | -9 / - | 3 | Partial capture |
| 08-25 20:30 | 40m | -14 / - | LZ4VR | -6 / - | 9 | ✓ Closing observed |
| 08-25 20:29 | 40m | -16 / -21 | VJ6X | -17 / -19 | 5 | ✓ Full exchange observed |
| 08-25 19:14 | 40m | - / -4 | RX7KIR | -4 / - | 2 | ✓ Closing fragment |
| 08-25 19:11 | 40m | - / -7 | RK6OV | -4 / - | 2 | ✓ Closing fragment |
| 08-25 19:03 | 40m | -13 / - | 5A1AL | - / - | 2 | Partial capture |
| 08-25 18:28 | 40m | - / -13 | RV3YN | -4 / - | 4 | ✓ Closing fragment |
| 08-25 18:28 | 40m | - / - | Z34K | -8 / - | 2 | Partial capture |
| 08-25 13:09 | 20m | -14 / - | JL1JAH | - / -11 | 2 | Partial capture |
| 08-25 13:07 | 20m | 0 / -1 | R2GBR | -21 / 0 | 2 | Partial capture |
| 08-14 07:39 | 20m | - / -22 | UA4CKN | -9 / - | 3 | ✓ Closing fragment |
| 08-14 07:37 | 20m | - / -10 | IK4LZH | +6 / - | 2 | ✓ Closing fragment |
| 08-14 05:44 | 20m | -19 / - | RA1TR | - / -20 | 4 | ✓ Closing fragment |
| 08-11 18:18 | 40m | -13 / -5 | 9A4ZM | -17 / - | 2 | ✓ Closing observed |
| 08-11 18:18 | 40m | - / - | ON8WI | -12 / - | 3 | ✓ Closing fragment |
| 08-11 18:16 | 40m | -16 / -11 | SV2AEL | -12 / - | 4 | ✓ Closing observed |
| 08-11 18:11 | 40m | -11 / - | DS5USH | - / -4 | 3 | ✓ Closing fragment |
| 08-11 17:58 | 20m | -12 / -15 | PD0HLA | +4 / -12 | 7 | ✓ Full exchange observed |
| 08-11 17:57 | 20m | -11 / -2 | TF4M | -14 / - | 2 | Partial capture |
| 08-11 17:55 | 20m | -7 / -1 | F5IXN | -8 / 0 | 4 | ✓ Full exchange observed |
| 08-11 17:54 | 20m | -8 / -2 | R3KLA | -4 / +9 | 3 | ✓ Full exchange observed |
| 08-06 18:37 | 40m | - / -20 | S59A | -2 / - | 2 | ✓ Closing fragment |
| 08-06 18:35 | 40m | - / -7 | YO4NF | -4 / - | 2 | ✓ Closing fragment |
| 08-06 18:34 | 40m | - / -13 | UB6OCD | -14 / - | 2 | ✓ Closing fragment |
| 08-06 18:32 | 40m | - / -13 | RA6OD | -4 / - | 3 | ✓ Closing fragment |
| 08-06 18:28 | 40m | - / -24 | RA3TVW | -8 / - | 2 | ✓ Closing fragment |
| 08-06 15:18 | 40m | - / - | UA4FKT | -15 / - | 3 | Partial capture |
| 08-06 04:48 | 20m | -8 / -7 | N2BJ | -4 / -4 | 4 | ✓ Full exchange observed |
| 08-05 15:13 | 40m | - / -9 | R7DX | -17 / - | 3 | ✓ Closing fragment |
| 08-05 08:11 | 20m | - / -6 | R4FDW | -16 / - | 2 | ✓ Closing fragment |
| 08-04 15:57 | 40m | - / -6 | RG3H | -17 / - | 2 | ✓ Closing fragment |
| 08-04 15:20 | 40m | - / - | R7DX | -18 / - | 4 | Partial capture |
| 08-04 06:45 | 20m | - / -16 | YO9PH | -18 / - | 2 | ✓ Closing fragment |
| 08-03 06:12 | 20m | - / +2 | RV3F | -18 / - | 3 | ✓ Closing fragment |
| 08-02 14:37 | 10m | - / -23 | EA8UP | -14 / - | 6 | ✓ Closing fragment |
| 08-02 08:56 | 10m | - / -12 | M5RJR | -14 / - | 2 | ✓ Closing fragment |
| 08-02 08:36 | 10m | - / -14 | M0BEW | -6 / - | 2 | ✓ Closing fragment |
| 07-30 17:51 | 40m | - / - | DL6UM | -8 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 173230 -8 2226 RA9CUA EU6UE -05 (x2) 173530 -14 2019 YO4LUP RA9CUA MO07 (x2) 173945 -19 1851 BD4JN RA9CUA R-15 175145 -10 1166 UI6O RA9CUA MO07 175230 -6 1165 RA9CUA UI6O -04 (x2) 163945 +1 447 RA9CUA RA9DZ -13 164115 -16 1618 RA9CUA UA4POO -05 164215 -12 1272 RA9CUA R7IW LN35 164245 +2 443 RA9CUA SV1MOZ KM17 164345 -6 2180 RA9CUA SP5LST KO02 (x3)
UTC dB Audio Message 073815 +3 463 RA9CUA IK4LZH RR73 073915 -4 621 RA9CUA UA4CKN -22 (x3) 130645 -10 1412 BG4UCZ RA9CUA R-13 130730 -21 1412 RA9CUA R2GBR -01 130745 +0 1412 R2GBR RA9CUA R+00 130900 -15 1411 JL1JAH RA9CUA R-11 (x2) 131345 -13 3068 RA9CUA OH6IH -08 141200 -11 1024 4Z5PT RA9CUA MO07 141215 -5 1025 RA9CUA 4Z5PT -03 141230 -15 1024 4Z5PT RA9CUA R-04 141245 -9 1025 RA9CUA 4Z5PT RR73 171215 -10 2342 BG7BMG RA9CUA MO07
UTC dB Audio Message 171315 -11 2569 RA9CUA R2EA -13 (x2) 083615 -7 2043 RA9CUA M0BEW -14 (x2) 085615 -13 946 RA9CUA M5RJR -12 (x2) 143745 -15 1781 RA9CUA EA8UP -23 (x6) 075000 -12 1802 RA9CUA 9A3K JN65 (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.
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