RK4UZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RK4UZ, decoded by SO8OO in southeastern Poland. 410 related FT8 messages, 62 CQ messages, observed on 80m, 40m, 20m, 10m, across 59 UTC dates. Heard between 2026-05-28 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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
Frequent QSO partners observed at SO8OO
Stations RK4UZ worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by RK4UZ
Approximate centre of LO24, decoded 2026-08-23 15:40 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 | RK4UZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 15:40 | 40m | -8 / -13 | DJ3HW | -7 / -19 | 6 | ✓ Full exchange observed |
| 08-23 15:38 | 40m | -19 / - | EU4BE | - / -16 | 3 | ✓ Closing fragment |
| 08-23 15:18 | 40m | - / - | 9A3EYA | -4 / - | 3 | Partial capture |
| 08-23 15:01 | 40m | -21 / - | UN2NC | - / -2 | 2 | ✓ Closing fragment |
| 08-23 14:57 | 40m | -22 / - | R3NAW | - / - | 2 | ✓ Closing fragment |
| 08-23 14:55 | 40m | -22 / - | <...> | - / - | 2 | Partial capture |
| 08-23 14:51 | 40m | - / +8 | UG4L | -12 / - | 2 | ✓ Closing fragment |
| 08-21 15:07 | 40m | -16 / - | R9FGJ | - / -11 | 3 | Partial capture |
| 08-21 15:02 | 40m | - / +9 | RU3NCW | -6 / - | 2 | ✓ Closing fragment |
| 08-20 17:20 | 80m | -7 / -8 | R6DUW | -10 / -12 | 6 | ✓ Full exchange observed |
| 08-20 17:07 | 40m | -14 / - | RW4HRE | - / -12 | 2 | Partial capture |
| 08-20 17:00 | 40m | -8 / +3 | UB2FEK | -2 / -11 | 4 | ✓ Full exchange observed |
| 08-20 16:57 | 40m | -11 / -9 | IW7DHC | -2 / -11 | 8 | ✓ Full exchange observed |
| 08-20 16:55 | 40m | -11 / +5 | EU6UE | -10 / -1 | 4 | ✓ Full exchange observed |
| 08-20 13:17 | 40m | - / -22 | SQ7BCB | -2 / - | 2 | ✓ Closing fragment |
| 08-20 06:32 | 20m | 0 / - | R3PLN/P | - / -9 | 2 | Partial capture |
| 08-19 17:24 | 80m | -12 / -5 | UB3LBU | -8 / -13 | 2 | Partial capture |
| 08-19 17:18 | 80m | -15 / -12 | RA6ATZ | +3 / -8 | 6 | ✓ Full exchange observed |
| 08-19 17:14 | 80m | -18 / -1 | RW4CB | -4 / -2 | 8 | ✓ Full exchange observed |
| 08-18 15:15 | 40m | - / +2 | RD7O | -19 / - | 3 | ✓ Closing fragment |
| 08-18 15:03 | 20m | -12 / - | R8LDJ | - / -3 | 2 | Partial capture |
| 08-18 14:59 | 20m | - / -18 | TA2ED | -20 / - | 2 | Partial capture |
| 08-18 08:53 | 10m | - / -6 | EA7BEM | -8 / - | 4 | ✓ Closing fragment |
| 08-18 08:47 | 10m | - / -8 | IK4IDF | -14 / - | 3 | ✓ Closing fragment |
| 08-18 08:33 | 10m | - / +1 | R6TA | -4 / - | 4 | Partial capture |
| 08-17 17:46 | 80m | -18 / +6 | R6ML | -4 / - | 5 | ✓ Closing observed |
| 08-17 17:44 | 80m | -14 / - | RK6DZ | - / - | 2 | ✓ Closing fragment |
| 08-17 17:35 | 80m | - / -6 | YO4NT | +1 / - | 2 | ✓ Closing fragment |
| 08-17 17:28 | 80m | -14 / - | RA4FHO | - / - | 2 | Partial capture |
| 08-17 17:23 | 80m | -16 / -3 | RX6DA | +2 / - | 4 | ✓ Closing observed |
| 08-17 17:20 | 80m | -18 / - | RA3TK | - / - | 2 | Partial capture |
| 08-17 17:17 | 80m | - / -3 | R2PT | -12 / - | 4 | ✓ Closing fragment |
| 08-16 13:10 | 20m | -18 / - | CX6TU | - / -20 | 4 | ✓ Closing fragment |
| 08-15 12:47 | 20m | -12 / - | JJ0WAJ | - / -18 | 3 | Partial capture |
| 08-15 12:40 | 20m | -10 / - | R4UR | - / - | 2 | Partial capture |
| 08-15 12:34 | 20m | -16 / - | UA0LQE | - / -11 | 2 | Partial capture |
| 08-15 12:29 | 20m | -18 / - | RI0FA | - / -17 | 2 | Partial capture |
| 08-15 12:25 | 20m | -17 / - | JR7AQL | - / -19 | 3 | ✓ Closing fragment |
| 08-11 13:13 | 20m | -13 / - | BA5AW | - / - | 2 | Partial capture |
| 08-08 15:17 | 20m | -14 / - | <...> | - / - | 2 | Partial capture |
| 08-08 03:23 | 80m | - / -12 | EW8AAC | -8 / - | 2 | ✓ Closing fragment |
| 08-07 17:08 | 80m | -16 / -14 | RK6OV | -14 / - | 3 | ✓ Closing observed |
| 08-07 17:02 | 80m | -20 / -2 | RA3X | -11 / - | 5 | ✓ Closing observed |
| 08-07 16:37 | 40m | - / -3 | R2AVW | -10 / - | 2 | ✓ Closing fragment |
| 08-07 09:22 | 20m | -22 / - | R2DAW | -24 / -19 | 2 | ✓ Closing observed |
| 08-06 13:42 | 20m | -12 / - | JJ1JMZ | - / -13 | 2 | ✓ Closing fragment |
| 08-05 06:52 | 20m | -18 / - | R5FY | - / +3 | 2 | ✓ Closing fragment |
| 08-02 17:12 | 40m | -18 / - | UB6LUR | - / - | 2 | Partial capture |
| 07-30 15:57 | 20m | -12 / - | HS9RAV | - / - | 3 | Partial capture |
| 07-30 15:53 | 20m | -13 / - | BG6WFY | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 151615 -20 1895 CQ RK4UZ LO24 (x2) 151800 -3 1890 RK4UZ 9A3EYA JN86 (x3) 153545 -12 877 DJ3HW RK4UZ LO24 153800 -19 1880 EU4BE RK4UZ LO24 (x3) 154000 -7 878 RK4UZ DJ3HW -13 154015 -12 877 DJ3HW RK4UZ LO24 154030 -10 878 RK4UZ DJ3HW -13 154045 -6 877 DJ3HW RK4UZ R-19 154100 -4 878 RK4UZ DJ3HW RR73 154115 -7 877 DJ3HW RK4UZ 73
UTC dB Audio Message 172430 -12 1849 UB3LBU RK4UZ -13 172445 -8 1496 RK4UZ UB3LBU R-05 171415 -10 1746 CQ RK4UZ LO24 (x7) 172045 -12 1750 RK4UZ R6DUW KN96 (x2) 172130 -7 1745 R6DUW RK4UZ -12 172145 -9 1750 RK4UZ R6DUW R-08 172200 -7 1746 R6DUW RK4UZ RR73 172215 -10 1750 RK4UZ R6DUW 73
UTC dB Audio Message 131130 -13 2030 CX6TU RK4UZ R-23 (x2) 115345 -19 1990 YT2DZB RK4UZ LO24 145830 -9 2014 CQ RK4UZ LO24 (x2) 145945 -22 2013 RK4UZ TA2ED -18 150000 -15 2014 CQ RK4UZ LO24 150015 -19 2013 RK4UZ TA2ED -18 150015 -11 1050 RK4UZ GE3ZQQ IO82 150100 -15 2014 R8CHY RK4UZ RR73 150300 -10 2014 R8LDJ RK4UZ R-03 (x2) 063245 +2 1895 R3PLN/P RK4UZ LO24 063400 -4 2630 RK4UZ R6DOB/M -06 063445 -3 1895 R3PLN/P RK4UZ R-09
UTC dB Audio Message 144445 -11 2687 RK4UZ SM2LIY RR73 083100 -15 2375 RK4UZ R6DWD -12 083330 -6 2803 RK4UZ R6TA LN13 (x4) 083800 -19 2079 RK4UZ R6ZIG RR73 084315 +3 2787 RK4UZ R6OD RR73 084700 -12 1721 RK4UZ IK4IDF JN54 (x3) 085300 -6 1392 RK4UZ EA7BEM IM66 (x4)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.