RK4F — FT8 station from European Russia
Amateur radio station RK4F operating from European Russia (grid square LO23). 444 FT8 spots received at SO8OO WebSDR, 143 CQ calls, active on 160m, 80m, 40m, 20m, 10m, over 35 days, best SNR +24 dB. Heard between 2026-04-21 and 2026-06-28.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
444
Total spots
143
CQ calls
35
Days active
-4 dB
Avg SNR
Bands
80m
20m
40m
10m
160m
First seen: 2026-04-21
Last seen: 2026-06-28 11:31 UTC
Last seen: 2026-06-28 11:31 UTC
Frequent QSO partners observed at SO8OO
Stations RK4F worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | RK4F | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-28 13:33 | 20m | - / - | G3PWG | +3 / - | 2 | Partial |
| 06-28 13:32 | 20m | - / -12 | PA1HGM | +2 / - | 2 | ✓ Confirmed |
| 06-28 13:29 | 20m | - / - | F1UNR | -4 / - | 2 | ✓ Confirmed |
| 06-28 13:27 | 20m | - / -14 | LB9KJ | -4 / - | 4 | ✓ Confirmed |
| 06-28 13:21 | 20m | - / -4 | KF0YOB | +4 / - | 3 | ✓ Confirmed |
| 06-27 16:17 | 20m | -11 / - | OK2VCR | - / - | 3 | ✓ Confirmed |
| 06-27 05:44 | 20m | - / - | <...> | -12 / - | 2 | Partial |
| 06-24 06:43 | 10m | -5 / - | F6JON/QRP | - / - | 2 | Partial |
| 06-22 06:59 | 10m | -14 / -1 | HB9CYT | -11 / -9 | 2 | Partial |
| 06-20 06:48 | 10m | - / - | UD6AWU | -21 / - | 2 | Partial |
| 06-20 06:44 | 10m | - / - | LZ2CP | -16 / - | 2 | ✓ Confirmed |
| 06-20 06:43 | 10m | - / -10 | UK8GG | -18 / - | 2 | ✓ Confirmed |
| 06-20 06:42 | 10m | - / -14 | R2EC | -13 / - | 2 | ✓ Confirmed |
| 06-20 06:41 | 10m | - / -8 | UF4S | -16 / - | 2 | ✓ Confirmed |
| 06-20 06:37 | 10m | -13 / - | RA6AR | - / +10 | 2 | ✓ Confirmed |
| 06-20 06:35 | 10m | -2 / - | RD7LO | - / - | 2 | ✓ Confirmed |
| 06-19 11:42 | 20m | -9 / -13 | G7FCT | +18 / - | 3 | ✓ Verified |
| 06-19 11:30 | 20m | -6 / -14 | IQ0VT | +18 / +1 | 4 | ✓ Complete |
| 06-19 11:28 | 20m | - / -10 | TA3XEE | +17 / - | 2 | ✓ Confirmed |
| 06-19 11:26 | 20m | - / -5 | TA3ZZ | +13 / - | 3 | ✓ Confirmed |
| 06-19 11:21 | 20m | - / -7 | W4OX | +8 / - | 3 | ✓ Confirmed |
| 06-18 11:42 | 20m | -16 / -22 | F4DIA | +21 / -17 | 4 | ✓ Complete |
| 06-18 11:32 | 20m | - / - | M8KKH | +12 / - | 2 | Partial |
| 06-18 11:26 | 20m | -1 / - | M8KKH | +14 / +3 | 7 | Partial |
| 06-14 17:41 | 20m | - / -15 | BA8BLK | -10 / - | 3 | ✓ Confirmed |
| 06-14 16:47 | 20m | -8 / - | RZ3Z | - / -13 | 2 | ✓ Confirmed |
| 06-14 14:57 | 20m | - / - | EA1DMB | -19 / - | 2 | ✓ Confirmed |
| 06-14 14:52 | 20m | -13 / -8 | OZ7DR | -5 / - | 4 | ✓ Verified |
| 06-14 14:45 | 20m | - / - | K1SM | -14 / - | 2 | ✓ Confirmed |
| 06-01 11:52 | 10m | +7 / - | IK4LZH | - / - | 4 | Partial |
| 06-01 11:40 | 10m | +2 / -21 | IQ0OS | -16 / -19 | 4 | ✓ Complete |
| 06-01 11:30 | 20m | -10 / - | IQ0FN | +11 / +8 | 2 | Partial |
| 06-01 11:29 | 20m | - / -12 | G5MJF | +6 / - | 4 | ✓ Confirmed |
| 06-01 11:27 | 20m | - / - | N1SK | +3 / - | 3 | Partial |
| 06-01 11:26 | 20m | - / -15 | K3JGJ | -4 / - | 2 | ✓ Confirmed |
| 06-01 11:23 | 20m | - / -11 | WE9V | -1 / - | 3 | Partial |
| 05-31 13:49 | 20m | -13 / -16 | UN7PME | +6 / - | 3 | ✓ Verified |
| 05-31 13:49 | 20m | -4 / - | PD3PAM | - / - | 8 | Partial |
| 05-31 08:00 | 20m | +18 / - | IK4LZH | - / - | 3 | Partial |
| 05-31 07:56 | 20m | - / - | R9FDE/P | +12 / - | 2 | Partial |
| 05-31 07:07 | 20m | - / -3 | PD2MAC | +10 / - | 2 | ✓ Confirmed |
| 05-31 07:02 | 20m | - / - | OJ0MN | -1 / - | 5 | Partial |
| 05-29 20:45 | 80m | - / - | F6BHK | -8 / - | 2 | Partial |
| 05-29 20:44 | 80m | - / - | BA5AN | -16 / - | 2 | ✓ Confirmed |
| 05-29 20:40 | 80m | - / - | DL70ESSEN | -6 / - | 2 | Partial |
| 05-29 20:37 | 80m | -6 / -8 | DO5HOK | -3 / -4 | 6 | ✓ Complete |
| 05-29 20:36 | 80m | +3 / -14 | DF0JEN | -8 / -19 | 5 | ✓ Complete |
| 05-29 20:35 | 80m | -10 / -4 | UB3IBG | -8 / - | 4 | ✓ Complete |
| 05-29 20:33 | 80m | -9 / - | R4FV | -5 / -9 | 3 | ✓ Verified |
| 05-29 20:31 | 80m | -6 / - | R2EA/P | -5 / -7 | 5 | ✓ Verified |
Station Log
20m
UTC dB Freq Message 062045 -23 1909 RK4F F5DAN RR73 132145 +3 2501 KF0YOB RK4F LO23 (x3) 132700 -2 2499 LB9KJ RK4F LO23 (x4) 132930 -6 2499 F1UNR RK4F LO23 (x2) 133130 +2 2498 CQ RK4F LO23 133200 +1 2499 PA1HGM RK4F R-12 (x2) 133300 +2 2498 G3PWG RK4F LO23 (x2)
10m
UTC dB Freq Message 064345 -13 1810 UK8GG RK4F -10 (x2) 064445 -17 1809 LZ2CP RK4F LO23 (x2) 064615 -18 1809 CQ RK4F LO23 (x2) 064800 -20 1809 UD6AWU RK4F LO23 (x2) 065930 -14 1166 RK4F HB9CYT -09 065945 -11 1166 HB9CYT RK4F R-01 064345 -5 1659 RK4F F6JON/QRP +00 (x2) 064800 -24 1734 CQ RK4F LO23 (x2) 065300 -24 1731 CT5IUO RK4F LO23
80m
UTC dB Freq Message 203730 -8 879 DF0JEN RK4F RR73 203745 +3 818 RK4F DF0JEN 73 203745 -5 1318 RK4F DO5HOK JO41 203800 -7 879 DO5HOK RK4F -08 (x2) 203845 -8 1318 RK4F DO5HOK R-04 203900 -2 879 DO5HOK RK4F RR73 203915 -5 1318 RK4F DO5HOK 73 203930 -6 878 LB9TH RK4F LO23 204030 -6 879 <DL70ESSEN> RK4F LO23 (x2) 204400 -24 879 BA5AN RK4F RR73 (x2) 204530 -8 879 F6BHK RK4F LO23 (x2)
160m
UTC dB Freq Message 201700 -2 699 RA1AGX RK4F R+03 201715 +7 853 RK4F RA1AGX RR73 201730 -8 699 RA1AGX RK4F 73 201745 -13 1000 RK4F YO6HEM KN25 201815 +5 2596 RK4F SQ9DJQ -02 201830 -7 698 CQ RK4F LO23 201845 +3 2596 RK4F SQ9DJQ -02 (x2) 201915 -14 1232 RK4F IU5TUD -19 (x2) 201945 +3 2596 RK4F SQ9DJQ -02 (x5)
40m
UTC dB Freq Message 181845 -7 2189 RK4F PD1BER JO22 (x8) 190145 -21 1585 RV6AVU RK4F 73 190345 -19 1584 YC2UKL RK4F R-17 (x3) 190730 -19 1585 RK4F DL3JHK JO62 (x3)