RU4SO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RU4SO, decoded by SO8OO in southeastern Poland. 1,440 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 32 UTC dates in the available aggregate history. Observed between 2026-07-04 and 2026-10-14.
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 1,440 FT8 messages attributed to RU4SO as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 80 m (32%) and 20 m (17%). Most decodes (79%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-10-14 18:05 UTC
Observed FT8 message patterns
- Attributed sample
- 1,440 messages
- Active dates
- 32 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -15.7 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 146, moderate (-15 to -9 dB) 417, strong (≥ -8 dB) 877.
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 RU4SO 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 RU4SO
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
- LO36 · 278 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,817 km (approx.)
- Last such locator decoded
- 2026-10-14 17:59 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 | RU4SO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-14 18:09 | 40m | - / -14 | CT1BFP | -14 / - | 2 | Partial capture |
| 10-14 17:57 | 40m | -16 / - | R6FML | -19 / -8 | 3 | ✓ Closing observed |
| 10-14 17:57 | 40m | -18 / -2 | DL8TV | +4 / - | 5 | ✓ Closing observed |
| 10-14 17:54 | 40m | - / - | EA1KCN | -5 / - | 6 | Partial capture |
| 10-14 17:53 | 40m | -16 / +3 | OE8PIT | +5 / -15 | 8 | ✓ Full exchange observed |
| 10-14 17:50 | 40m | -12 / - | OE5KBO | - / -16 | 2 | Partial capture |
| 10-14 17:47 | 40m | -9 / - | LA8MGA | - / -22 | 2 | ✓ Closing fragment |
| 10-14 17:35 | 40m | -10 / - | Z33PB | - / -15 | 3 | Partial capture |
| 10-14 17:33 | 40m | -6 / - | PD1GOL | - / -15 | 2 | ✓ Closing fragment |
| 10-14 17:29 | 40m | -9 / -19 | OE5FIL | -6 / - | 3 | ✓ Closing observed |
| 10-14 17:29 | 40m | -7 / 0 | F3CJ | -14 / -16 | 7 | ✓ Full exchange observed |
| 10-14 17:27 | 40m | - / +8 | R6UBM | -10 / - | 2 | Partial capture |
| 10-14 17:23 | 40m | - / +4 | RV6MX | -12 / - | 2 | ✓ Closing fragment |
| 10-14 17:13 | 40m | -8 / - | DK9LF | -16 / -19 | 4 | Partial capture |
| 10-14 17:06 | 40m | -6 / - | SP5ALV | - / -3 | 3 | ✓ Closing fragment |
| 10-14 17:05 | 40m | -4 / - | F5OYA/P | - / -21 | 4 | Partial capture |
| 10-14 17:02 | 40m | - / - | EA1KCN | -4 / - | 5 | Partial capture |
| 10-14 16:52 | 40m | - / -8 | SV1DKR | -8 / - | 2 | ✓ Closing fragment |
| 10-14 16:45 | 40m | -10 / - | S79VU | - / - | 3 | ✓ Closing fragment |
| 10-14 16:39 | 40m | - / - | ON7YC | -6 / - | 2 | Partial capture |
| 10-14 16:35 | 40m | -1 / -9 | UB3DLM | -1 / -5 | 5 | ✓ Full exchange observed |
| 10-14 16:34 | 40m | -2 / - | BD3PLU | - / -16 | 2 | ✓ Closing fragment |
| 10-14 16:33 | 40m | - / -4 | RZ1AS | -9 / - | 4 | Partial capture |
| 10-14 16:31 | 40m | -3 / - | PE1NAO | -17 / -19 | 3 | ✓ Closing observed |
| 10-14 16:30 | 40m | -8 / - | BD9DM | - / -16 | 2 | ✓ Closing fragment |
| 10-14 16:28 | 40m | -3 / - | SM4MNN | - / -12 | 2 | ✓ Closing fragment |
| 10-14 16:26 | 40m | 0 / +2 | DL3BQV | +2 / -3 | 5 | ✓ Full exchange observed |
| 10-14 16:22 | 40m | -5 / - | M9XPN | - / -14 | 2 | ✓ Closing fragment |
| 10-14 16:20 | 40m | -4 / -5 | DF1BGQ | -3 / - | 4 | ✓ Closing observed |
| 10-14 16:14 | 40m | -6 / -2 | R7ZY | -6 / - | 4 | ✓ Closing observed |
| 10-13 17:04 | 40m | -14 / 0 | RA3ZH | -10 / -11 | 3 | ✓ Full exchange observed |
| 10-13 17:03 | 40m | -12 / - | PD1ADA | - / -9 | 2 | Partial capture |
| 10-13 17:02 | 40m | -11 / -2 | RN1TG | -6 / -5 | 5 | ✓ Full exchange observed |
| 10-13 16:59 | 40m | -5 / - | HA3TBL | -13 / - | 2 | ✓ Closing observed |
| 10-13 16:54 | 40m | -9 / - | RA5AK | -6 / -5 | 2 | ✓ Closing observed |
| 10-13 16:51 | 40m | -8 / - | RK2Z | +4 / -6 | 4 | ✓ Closing observed |
| 10-13 16:51 | 40m | -10 / -3 | IZ3EAW | -1 / -10 | 4 | ✓ Full exchange observed |
| 10-13 16:46 | 40m | -8 / - | RA4CEH/P | - / -19 | 2 | ✓ Closing fragment |
| 10-09 20:58 | 80m | - / - | JH5FTY | -9 / - | 2 | ✓ Closing fragment |
| 10-09 20:58 | 80m | - / -23 | JR3REX | -12 / - | 2 | Partial capture |
| 10-09 20:44 | 80m | -11 / - | UA3AGW | +7 / -2 | 4 | ✓ Full exchange observed |
| 10-09 16:56 | 80m | - / -12 | RA9UJ | -16 / - | 2 | ✓ Closing fragment |
| 10-09 16:48 | 80m | -10 / -2 | RV4LD | +4 / +1 | 4 | ✓ Full exchange observed |
| 10-09 16:44 | 80m | - / -8 | RC6OU | -1 / - | 2 | ✓ Closing fragment |
| 10-09 16:32 | 80m | -8 / - | BD8CS | - / -13 | 2 | Partial capture |
| 10-09 16:27 | 80m | -8 / - | JA8GWA | - / -13 | 3 | Partial capture |
| 10-09 16:23 | 80m | -9 / - | JE2LPC | -10 / -12 | 6 | ✓ Closing observed |
| 10-09 15:47 | 80m | - / -13 | JM1JZN | -15 / - | 2 | Partial capture |
| 10-09 15:28 | 80m | -18 / - | UA3UHP | -5 / -5 | 2 | ✓ Closing observed |
| 10-09 15:25 | 80m | - / -4 | R6ZB | +1 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175715 -16 2026 CQ RU4SO LO36 175730 -23 2025 RU4SO EB2EMZ IN83 175730 -7 2844 RU4SO EA1KCN IN53 175730 +4 1158 RU4SO DL8TV -02 175745 -18 2026 R6FML RU4SO -08 175800 +2 1158 RU4SO DL8TV -02 175815 -14 2026 R6FML RU4SO RR73 175830 -19 1983 RU4SO R6FML 73 175830 +3 1158 RU4SO DL8TV -02 (x2) 175915 -18 2026 DL8TV RU4SO 73 175945 -15 2025 CQ RU4SO LO36 180515 -13 2026 BH4GDY RU4SO RR73 180900 -15 2026 RU4SO CT1BFP IM59 (x2)
UTC dB Audio Message 164930 -9 638 RV4LD RU4SO RR73 164945 +2 2402 RU4SO RV4LD 73 165030 +5 638 R2OM RU4SO 73 165530 -6 638 JE1FQV RU4SO RR73 165645 -15 2488 RU4SO RA9UJ -12 (x2) 204400 -10 1015 UA3AGW RU4SO -02 204415 +6 1015 RU4SO UA3AGW R+11 204430 -12 1015 UA3AGW RU4SO RR73 204445 +8 1015 RU4SO UA3AGW 73 205745 +2 2954 RU4SO JJ3JHP R-07 205815 -13 1180 RU4SO JR3REX PM74 (x2) 205845 -8 2737 RU4SO JH5FTY PM63 (x2)
UTC dB Audio Message 192145 -15 1563 RU4SO LA9JKA JP32 192200 -11 1263 LA9JKA RU4SO -05 (x3) 192815 -11 1243 SV9GPV RU4SO -09 (x2) 193030 -22 1244 RW6PA RU4SO -04 (x2) 193230 -13 1397 <...> RU4SO -07 (x3) 193915 -13 2353 JA2VQF RU4SO -23 (x4)
UTC dB Audio Message 104730 +16 2355 R7OV RU4SO -13 (x2) 104815 +13 2402 RU4SO R6FFB LN14 104830 +8 2355 R6FFB RU4SO -10 104845 +9 2402 RU4SO R6FFB R-13 104900 +8 2354 R6FFB RU4SO RR73 104915 +16 2402 RU4SO R6FFB 73 105030 +7 2355 UB0SMX/P RU4SO RR73 053215 -9 2002 RU4SO IW8XOU JN71 (x3) 045615 +10 2775 <...> RU4SO -14 (x2) 045845 -5 2878 9J2FI RU4SO -12 (x2)
UTC dB Audio Message 103630 -19 2041 RU4SO UB6OCP 73
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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