RU3U — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RU3U, decoded by SO8OO in southeastern Poland. 48 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-25 and 2026-08-23.
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 48 FT8 messages attributed to RU3U as the transmitting token by decoded message structure across 4 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 (50%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (63%); the estimated median was -17 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 48 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -24 to -13 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 30, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 0.
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 RU3U 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 RU3U
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
- LO07 · 35 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,510 km (approx.)
- Last such locator decoded
- 2026-08-23 12:39 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 | RU3U S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 12:42 | 20m | -14 / -2 | R6ZAJ | -1 / -13 | 5 | ✓ Full exchange observed |
| 08-23 12:37 | 20m | -14 / -21 | RW6ATD | +2 / -19 | 4 | ✓ Full exchange observed |
| 08-23 12:32 | 20m | -14 / - | UA3LKM | - / -10 | 3 | Partial capture |
| 08-23 12:11 | 20m | - / -24 | ON1JP | -8 / - | 2 | Partial capture |
| 08-23 11:56 | 20m | - / -13 | R6TA | -4 / - | 2 | Partial capture |
| 08-23 11:50 | 20m | - / -13 | F1PSX | -1 / - | 5 | ✓ Closing fragment |
| 08-23 11:42 | 20m | - / -19 | ON1AJ | -4 / - | 4 | ✓ Closing fragment |
| 08-23 11:30 | 20m | -18 / - | R1BDX | - / -10 | 2 | Partial capture |
| 08-23 11:24 | 20m | -14 / - | F1ODM | - / -21 | 2 | Partial capture |
| 08-22 18:07 | 20m | - / - | F5RRS | +3 / - | 5 | Partial capture |
| 08-22 18:04 | 20m | - / -20 | CT1BFP | -4 / - | 7 | Partial capture |
| 08-22 18:03 | 20m | - / -12 | R6OAQ | -3 / - | 2 | Partial capture |
| 08-22 17:56 | 20m | - / - | DL1SUZ | 0 / - | 2 | ✓ Closing fragment |
| 08-22 17:51 | 20m | - / -17 | M1WLK | +3 / - | 3 | ✓ Closing fragment |
| 08-22 17:45 | 20m | - / -26 | IQ4JO | +14 / - | 3 | ✓ Closing fragment |
| 08-21 20:16 | 20m | - / -13 | DK8IZ | -5 / - | 3 | ✓ Closing fragment |
| 08-21 20:15 | 20m | - / -15 | PH7GD | -7 / - | 2 | ✓ Closing fragment |
| 08-21 20:01 | 20m | - / -21 | G6LEE | +9 / - | 3 | ✓ Closing fragment |
| 08-21 19:55 | 20m | - / - | G5ANT | -7 / - | 2 | Partial capture |
| 08-14 19:33 | 20m | -23 / - | LZ5UY | - / - | 2 | Partial capture |
| 08-14 19:26 | 20m | -22 / -15 | EG2FPA | 0 / -7 | 5 | Partial capture |
| 08-14 19:17 | 20m | - / - | G1CEC | -14 / - | 2 | Partial capture |
| 08-08 19:12 | 20m | - / +1 | DL1BKX | -5 / - | 2 | Partial capture |
| 08-08 18:41 | 20m | - / - | YO4GOU | -8 / - | 3 | Partial capture |
| 08-08 18:34 | 20m | - / -19 | PD3LKN | -7 / - | 4 | ✓ Closing fragment |
| 08-08 17:54 | 20m | - / -24 | 2E0BTX | -12 / - | 13 | Partial capture |
| 08-08 17:08 | 20m | - / -15 | HA1BF | 0 / - | 4 | Partial capture |
| 08-08 16:59 | 20m | - / -21 | SV2AEL | -16 / - | 4 | ✓ Closing fragment |
| 08-02 10:03 | 20m | - / -4 | R1BRZ | -14 / - | 2 | ✓ Closing fragment |
| 08-02 10:00 | 20m | - / -4 | RA3Y | -11 / - | 2 | ✓ Closing fragment |
| 08-02 07:22 | 20m | - / -11 | R6OJ | +12 / - | 2 | ✓ Closing fragment |
| 08-01 20:46 | 20m | -24 / - | KE2UK | - / - | 2 | Partial capture |
| 08-01 20:40 | 20m | - / -15 | OZ7CL | 0 / - | 2 | ✓ Closing fragment |
| 08-01 20:18 | 20m | - / -9 | M0CKX | -19 / - | 2 | ✓ Closing fragment |
| 08-01 19:35 | 20m | - / -18 | F1ODM | -8 / - | 5 | Partial capture |
| 08-01 18:56 | 20m | -20 / - | <...> | - / - | 2 | Partial capture |
| 08-01 18:49 | 20m | -20 / - | 9J2FI | - / - | 2 | Partial capture |
| 08-01 18:44 | 20m | - / -18 | UD7G | -12 / - | 3 | ✓ Closing fragment |
| 08-01 18:36 | 20m | -22 / - | 9J2FI | - / - | 3 | Partial capture |
| 08-01 06:05 | 20m | - / -19 | RZ6CO | -12 / - | 4 | ✓ Closing fragment |
| 07-31 21:58 | 20m | - / -18 | 9K2OK | -16 / - | 2 | ✓ Closing fragment |
| 07-31 21:53 | 20m | - / -17 | A71UN | -12 / - | 2 | ✓ Closing fragment |
| 07-26 12:16 | 20m | - / -11 | DL3RAJ | -14 / - | 2 | ✓ Closing fragment |
| 07-26 12:01 | 20m | - / -12 | R4CR | -16 / - | 2 | ✓ Closing fragment |
| 07-26 11:27 | 20m | - / -8 | RA6OY | 0 / - | 3 | ✓ Closing fragment |
| 07-26 10:51 | 20m | - / -9 | RU7KQ | -21 / - | 2 | ✓ Closing fragment |
| 07-26 06:48 | 20m | - / -18 | F4LNM | -7 / - | 3 | ✓ Closing fragment |
| 07-26 06:39 | 20m | - / -24 | EA5HEU | +1 / - | 2 | Partial capture |
| 07-26 06:31 | 20m | - / - | DL1R | -1 / - | 8 | Partial capture |
| 07-26 06:28 | 20m | - / -8 | DM5EI | +4 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 123345 -16 2179 UA3LKM RU3U -19 123645 -14 2179 CQ RU3U LO07 123730 +3 2925 RU3U RW6ATD -21 123745 -15 2180 RW6ATD RU3U R-19 123800 +2 2924 RU3U RW6ATD RR73 123815 -13 2180 RW6ATD RU3U 73 123915 -16 2180 CQ RU3U LO07 (x2) 124200 +5 2181 RU3U R6ZAJ KN98 124215 -15 2180 R6ZAJ RU3U -13 124230 -4 2181 RU3U R6ZAJ R-02 124245 -14 2181 R6ZAJ RU3U RR73 124300 -4 2181 RU3U R6ZAJ 73 130400 -5 2299 RU3U DL7ARV JO62 134145 -13 2180 RV9UAF RU3U 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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