RU4B — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RU4B, decoded by SO8OO in southeastern Poland. 728 related FT8 messages, 218 CQ messages, observed on 80m, 40m, 20m, 10m, across 43 UTC dates. Heard between 2026-05-25 and 2026-08-23.
These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.
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Overview
Frequent QSO partners observed at SO8OO
Stations RU4B worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by RU4B
Approximate centre of LN28, decoded 2026-08-22 20:23 UTC. A transmitted locator is not proof of the operator's permanent location.
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 | RU4B S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-22 20:23 | 40m | -3 / -10 | R4HNT | -22 / -11 | 5 | ✓ Full exchange observed |
| 08-22 20:20 | 40m | -6 / - | TN8GD | - / -15 | 3 | ✓ Closing fragment |
| 08-22 20:18 | 40m | -7 / -2 | EW8AAC | -10 / -6 | 5 | ✓ Full exchange observed |
| 08-22 20:17 | 40m | -4 / +9 | R6DZR | +3 / 0 | 5 | ✓ Full exchange observed |
| 08-22 20:14 | 40m | -2 / -15 | 9A3EYA | -4 / -9 | 4 | ✓ Full exchange observed |
| 08-21 17:28 | 20m | - / -7 | OM3CUP | -10 / - | 2 | ✓ Closing fragment |
| 08-21 08:55 | 20m | -20 / - | OJ0YL | - / - | 2 | Partial capture |
| 08-21 08:53 | 20m | -21 / -1 | RW4HUD | -18 / -16 | 3 | Partial capture |
| 08-20 20:50 | 40m | - / -22 | DL7ET | -1 / - | 3 | ✓ Closing fragment |
| 08-20 20:49 | 40m | -4 / - | YO3GNF | -15 / - | 2 | ✓ Closing observed |
| 08-20 18:12 | 80m | -10 / - | SP5CQI | - / - | 2 | Partial capture |
| 08-19 17:28 | 80m | -17 / - | RN6AK | - / - | 4 | Partial capture |
| 08-18 18:40 | 80m | -10 / -4 | R4HMI | -10 / -6 | 6 | ✓ Full exchange observed |
| 08-18 18:38 | 80m | -7 / -5 | R3DMS | -6 / - | 2 | ✓ Closing observed |
| 08-18 18:36 | 80m | -6 / +4 | R4HHN | -4 / +2 | 6 | ✓ Full exchange observed |
| 08-18 15:04 | 20m | -12 / - | DL1R | - / -12 | 2 | Partial capture |
| 08-18 15:02 | 20m | -4 / - | M1DBB | - / - | 2 | Partial capture |
| 08-18 15:01 | 20m | -3 / - | JQ3DYV | - / -14 | 3 | ✓ Closing fragment |
| 08-18 14:58 | 20m | -2 / - | UB8CSJ | - / -9 | 2 | ✓ Closing fragment |
| 08-18 14:57 | 20m | +2 / - | BG7BMG | - / -16 | 2 | ✓ Closing fragment |
| 08-18 14:56 | 20m | -5 / - | VK2ZR | - / -8 | 3 | ✓ Closing fragment |
| 08-18 14:54 | 20m | -11 / - | TA3RAM | - / - | 2 | ✓ Closing fragment |
| 08-18 14:53 | 20m | -10 / -3 | M7JVT | -14 / -8 | 5 | ✓ Full exchange observed |
| 08-18 14:47 | 20m | -7 / - | SP1ZMO | - / -15 | 4 | ✓ Closing fragment |
| 08-18 14:44 | 20m | -10 / - | BG4OOO | - / - | 2 | Partial capture |
| 08-18 14:42 | 20m | -6 / - | 9J2FI | - / -15 | 4 | ✓ Closing fragment |
| 08-18 14:40 | 20m | -8 / - | ON4FHM | - / - | 2 | ✓ Closing fragment |
| 08-18 14:39 | 20m | -7 / - | BH4ECL | - / -16 | 2 | Partial capture |
| 08-18 14:33 | 20m | -11 / - | VK2ZR | - / - | 3 | Partial capture |
| 08-17 21:22 | 40m | -23 / - | ER1CW | - / -9 | 2 | ✓ Closing fragment |
| 08-17 21:16 | 80m | -10 / - | DO1ID | - / - | 2 | Partial capture |
| 08-17 18:35 | 80m | -15 / +2 | UA4QK | -7 / -3 | 5 | ✓ Full exchange observed |
| 08-17 18:33 | 80m | -14 / -2 | R5ACQ | -7 / -2 | 5 | ✓ Full exchange observed |
| 08-17 18:29 | 80m | -11 / - | RA3THN | - / -14 | 4 | ✓ Closing fragment |
| 08-17 18:27 | 80m | -13 / -10 | HA7KLA | +7 / -17 | 7 | ✓ Full exchange observed |
| 08-17 18:20 | 40m | - / +1 | SQ2GXO | -4 / - | 2 | ✓ Closing fragment |
| 08-17 17:27 | 80m | -11 / - | RA4FHO | - / -2 | 7 | ✓ Closing fragment |
| 08-13 18:32 | 80m | -10 / - | R8CEG | - / - | 2 | Partial capture |
| 08-13 18:30 | 80m | -3 / -6 | R8LCI | -18 / -10 | 5 | ✓ Full exchange observed |
| 08-13 18:28 | 80m | -11 / -12 | DL5DSM | +20 / -16 | 5 | ✓ Full exchange observed |
| 08-13 18:25 | 80m | -10 / -1 | R6NA | +11 / 0 | 7 | ✓ Full exchange observed |
| 08-13 18:21 | 80m | -9 / -5 | UB1AXF | -5 / -15 | 7 | ✓ Full exchange observed |
| 08-13 18:21 | 80m | -15 / - | RQ3D | - / -17 | 2 | Partial capture |
| 08-13 18:18 | 80m | -10 / -7 | HA7XL | +13 / - | 4 | ✓ Closing observed |
| 08-13 18:17 | 80m | -13 / - | R9FF | - / -16 | 3 | ✓ Closing fragment |
| 08-13 18:16 | 80m | -17 / - | R2UC | -10 / -8 | 3 | ✓ Closing observed |
| 08-13 18:13 | 80m | -9 / -12 | YU7AS | +6 / -12 | 5 | ✓ Full exchange observed |
| 08-13 18:10 | 80m | -6 / - | RD9FC | - / -10 | 7 | ✓ Closing fragment |
| 08-13 18:08 | 80m | -5 / +4 | R6ML | -7 / -7 | 6 | ✓ Full exchange observed |
| 08-13 18:05 | 80m | -1 / 0 | RD6OX | +14 / 0 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 201915 -7 2565 EW8AAC RU4B R-06 201930 -8 1728 RU4B EW8AAC RR73 201945 -6 2565 EW8AAC RU4B 73 202015 -5 2565 TN8GD RU4B LN28 (x3) 202145 -2 2565 YT3ZT RU4B LN28 202315 -1 2565 CQ RU4B LN28 202345 -3 2565 R4HNT RU4B LN28 202400 -20 2090 RU4B R4HNT -10 202415 -4 2565 R4HNT RU4B R-11 202430 -24 2090 RU4B R4HNT RRR 202445 -2 2565 R4HNT RU4B 73 202730 -13 1853 RU4B YT3ZT -07 054115 -18 2174 RU4B RK6OV RR73
UTC dB Audio Message 150145 -1 2611 JQ3DYV RU4B R-14 (x2) 150245 -4 2611 M1DBB RU4B LN28 (x2) 150415 -9 2611 DL1R RU4B -12 (x2) 085115 -21 2332 <...> RU4B LN28 085300 -14 2120 RU4B RW4HUD LO42 085315 -21 2332 RW4HUD RU4B -16 085330 -21 2119 RU4B RW4HUD R-01 085545 -20 2332 OJ0YL RU4B LN28 (x2) 172500 -15 2244 RA9UFJ RU4B R-21 172800 -10 2242 RU4B OM3CUP -07 (x2)
UTC dB Audio Message 183745 -8 1984 R4HHN RU4B 73 183845 -6 1365 RU4B R3DMS -05 183930 -7 1984 R3DMS RU4B 73 184000 -10 1983 R4HMI RU4B LN28 (x2) 184115 -12 1709 RU4B R4HMI -04 184130 -11 1983 R4HMI RU4B R-06 184145 -8 1709 RU4B R4HMI RR73 184200 -15 1983 R4HMI RU4B 73 172815 -16 2229 RN6AK RU4B LN28 (x4) 181200 -11 2076 SP5CQI RU4B LN28 (x2)
UTC dB Audio Message 085645 +11 2496 RU4B DG0BS -20 (x2) 120230 -14 2403 RU4B RV3YR -02 (x5) 120930 -18 2401 RV9CW RU4B LN28 064545 -21 1810 RU4B RN3H KO84 (x2) 074830 -20 1481 RU4B RG7A KN93 (x2) 075330 +7 658 RU4B SX0W KN10 (x3)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.