OK4SD — FT8 station from Czech Republic
Amateur radio station OK4SD operating from Czech Republic. 157 FT8 spots received at SO8OO WebSDR, 3 CQ calls, active on 160m, 80m, 60m, 40m, 20m, 10m, over 26 days, best SNR +19 dB. Heard between 2026-04-23 and 2026-06-24.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
157
Total spots
3
CQ calls
26
Days active
-3 dB
Avg SNR
Bands
80m
20m
60m
40m
10m
160m
First seen: 2026-04-23
Last seen: 2026-06-24 17:27 UTC
Last seen: 2026-06-24 17:27 UTC
Frequent QSO partners observed at SO8OO
Stations OK4SD worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | OK4SD | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 06-24 20:59 | 40m | - / - | CN2DX | -4 / - | 2 | Partial |
| 06-24 19:27 | 80m | - / - | <...> | +17 / - | 2 | Partial |
| 06-17 19:31 | 80m | -16 / -12 | II3DRC | +4 / -4 | 4 | ✓ Complete |
| 06-17 19:28 | 80m | -17 / -17 | UX2QX | +1 / - | 4 | ✓ Verified |
| 06-17 19:27 | 80m | - / - | HB3YQP | -2 / - | 3 | Partial |
| 06-17 19:23 | 80m | +2 / -4 | SV1SSL | +6 / -7 | 7 | ✓ Complete |
| 06-17 19:21 | 80m | - / - | SV9MBH | 0 / - | 3 | Partial |
| 06-17 19:17 | 160m | - / - | YL3CW | -9 / - | 2 | Partial |
| 06-17 19:07 | 20m | -8 / - | JH5AVM | - / -15 | 3 | Partial |
| 06-14 19:54 | 10m | - / -13 | EA4CFT | -10 / - | 2 | ✓ Confirmed |
| 06-14 19:52 | 10m | - / -3 | ER3CT | -5 / - | 4 | ✓ Confirmed |
| 06-14 07:06 | 20m | - / - | N4WLO | -4 / - | 3 | Partial |
| 06-13 07:20 | 40m | - / - | <...> | -10 / - | 2 | Partial |
| 06-13 07:15 | 20m | - / - | TI5RR | -1 / - | 2 | Partial |
| 06-13 07:14 | 20m | - / - | XE1YD | -2 / - | 2 | Partial |
| 06-13 07:11 | 20m | - / - | VK2VAR | +3 / - | 4 | Partial |
| 06-13 07:09 | 20m | - / - | VK6AS | +10 / - | 2 | Partial |
| 06-12 19:05 | 10m | - / - | EX8ABR | -10 / - | 3 | Partial |
| 06-11 20:25 | 160m | - / - | OH2HGK | 0 / - | 4 | Partial |
| 06-11 20:19 | 160m | +4 / +4 | SP5IDR | -6 / -8 | 4 | ✓ Complete |
| 06-11 20:15 | 160m | -4 / +1 | HB9HFR | -9 / -18 | 8 | ✓ Complete |
| 06-11 19:47 | 80m | - / - | SV1EKI | 0 / - | 10 | Partial |
| 06-11 18:44 | 20m | - / - | K1WY | -17 / - | 3 | Partial |
| 06-11 18:23 | 40m | - / - | UN8DSW | +8 / - | 4 | ✓ Confirmed |
| 06-08 18:34 | 40m | - / -24 | ZL1VAH | +8 / - | 8 | Partial |
| 06-07 19:20 | 20m | +5 / - | G4DBW | -23 / -1 | 4 | ✓ Verified |
| 06-07 18:29 | 20m | +10 / - | YO4FRF | - / -4 | 2 | Partial |
| 06-07 17:28 | 10m | -7 / - | 5H1KB | - / -4 | 2 | Partial |
| 06-06 21:39 | 80m | - / - | EA3OR | 0 / - | 10 | Partial |
| 06-06 20:54 | 80m | -8 / -13 | SP5DFK | -3 / - | 3 | ✓ Verified |
| 06-06 20:51 | 80m | -8 / -7 | DL2JLB | -2 / +5 | 7 | ✓ Complete |
| 06-06 20:42 | 80m | -4 / -18 | IW7DVM | +2 / -16 | 4 | ✓ Complete |
| 06-06 20:40 | 80m | - / - | OO0O | 0 / - | 4 | Partial |
| 06-06 19:39 | 60m | +6 / - | OM5JG | 0 / - | 5 | ✓ Complete |
| 06-03 19:25 | 60m | - / +1 | OS4K | +5 / - | 13 | ✓ Confirmed |
| 06-03 19:22 | 80m | - / - | DS4AKP | -8 / - | 2 | Partial |
| 06-03 14:17 | 20m | - / - | 8F544BGR | 0 / - | 5 | Partial |
| 06-02 20:17 | 160m | -13 / +3 | IV3WMS | -3 / -16 | 8 | ✓ Complete |
| 06-02 20:15 | 160m | -9 / -9 | DL4KSD | -4 / -8 | 5 | ✓ Complete |
| 06-02 20:08 | 160m | -1 / -3 | IZ3GOG | -2 / -13 | 8 | ✓ Complete |
| 06-02 20:08 | 160m | - / - | YU1LD | -8 / - | 2 | Partial |
| 06-02 20:05 | 160m | -10 / +5 | PA3FR | -2 / -16 | 6 | ✓ Complete |
| 06-02 20:02 | 160m | -6 / -12 | SP9OJ | -1 / -18 | 8 | ✓ Complete |
| 06-02 20:00 | 160m | - / - | IU1VJP | +3 / - | 2 | Partial |
| 06-02 19:56 | 160m | - / - | IK6BSN | -7 / - | 3 | Partial |
| 06-02 19:37 | 80m | - / -20 | GB6DD | +2 / - | 4 | ✓ Confirmed |
| 06-02 19:34 | 80m | -8 / -17 | OH6NEQ | -1 / -24 | 6 | ✓ Complete |
| 06-02 19:24 | 40m | - / - | A61CK | +4 / - | 2 | Partial |
| 06-01 20:21 | 40m | - / - | VK3EIB | +8 / - | 3 | Partial |
| 05-28 20:30 | 40m | - / -16 | ZL4KX | +9 / - | 8 | ✓ Confirmed |
Station Log
40m
UTC dB Freq Message 183500 +5 2229 ZL1VAH OK4SD JN79 (x7) 182330 +10 2695 UN8DSW OK4SD JN79 (x4) 072030 -13 2166 <...> OK4SD JN79 (x2) 205915 -6 430 CN2DX OK4SD JN79 (x2)
80m
UTC dB Freq Message 192700 +0 2307 HB3YQP OK4SD JN79 (x3) 192830 +0 2306 UX2QX OK4SD JN79 (x2) 192915 -17 1210 OK4SD UX2QX RR73 192930 +2 2307 UX2QX OK4SD 73 192930 -6 1502 OK4SD SV9MBH -07 193100 -19 2162 OK4SD II3DRC JN56 193115 -1 2306 II3DRC OK4SD -12 193130 -13 2163 OK4SD II3DRC R-04 193145 +10 2307 II3DRC OK4SD RR73 192700 +19 531 <...> OK4SD JN79 192715 +15 1770 OK4SD OK/PD1RP +21 192730 +15 531 <...> OK4SD R+17
160m
UTC dB Freq Message 201715 -6 2141 HB9HFR OK4SD JN79 201830 -5 1469 OK4SD HB9HFR -18 201845 -8 2141 HB9HFR OK4SD R+01 201900 -4 1469 OK4SD HB9HFR RR73 201915 -11 2141 HB9HFR OK4SD 73 201930 +5 1153 OK4SD SP5IDR -08 201945 -5 2141 SP5IDR OK4SD R+04 202000 +4 1153 OK4SD SP5IDR RR73 202015 -8 2141 SP5IDR OK4SD 73 202500 +0 2141 OH2HGK OK4SD JN79 (x4) 191730 -8 2528 YL3CW OK4SD JN79 (x2)
20m
UTC dB Freq Message 071115 +6 2451 VK2VAR OK4SD JN79 (x4) 071415 -3 2204 XE1YD OK4SD JN79 (x2) 071545 -5 2204 TI5RR OK4SD JN79 (x2) 070615 -7 2505 N4WLO OK4SD JN79 (x3) 070845 -8 2505 VK6AS OK4SD JN79 190745 -9 1350 OK4SD JH5AVM -15 (x3)
10m
UTC dB Freq Message 195615 -14 1346 OK4SD PR2PT 73 195615 -9 2375 OK4SD LU4BBI -12 (x2) 172830 -7 419 OK4SD 5H1KB -04 (x3) 190545 -9 2498 EX8ABR OK4SD JN79 (x3) 195230 -7 2516 ER3CT OK4SD JN79 (x4) 195430 -9 2516 EA4CFT OK4SD -13 (x2)
60m
UTC dB Freq Message 192645 +0 2054 OS4K OK4SD R+01 (x10) 193900 +8 2479 OM5JG OK4SD JN79 194015 +6 1199 OK4SD OM5JG +30 194030 -4 2170 OM5JG OK4SD R+18 194045 +7 1198 OK4SD OM5JG RR73 194100 -3 2170 OM5JG OK4SD 73