OK4SD — FT8 station from Czech Republic
Amateur radio station OK4SD operating from Czech Republic. 83 FT8 spots received at SO8OO WebSDR, active on 160m, 80m, 40m, 20m, 10m, over 15 days, best SNR +16 dB. Heard between 2026-04-23 and 2026-05-13.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
83
Total spots
0
CQ calls
15
Days active
-3 dB
Avg SNR
Bands
80m
20m
40m
10m
160m
First seen: 2026-04-23
Last seen: 2026-05-13 22:29 UTC
Last seen: 2026-05-13 22:29 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 | |
|---|---|---|---|---|---|---|
| 05-14 17:20 | 20m | - / -7 | SP5GW | +2 / - | 2 | ✓ Confirmed |
| 05-14 00:31 | 80m | - / - | W2OSR | +3 / - | 2 | Partial |
| 05-14 00:28 | 80m | -3 / +7 | IQ0RU | +5 / - | 5 | ✓ Complete |
| 05-14 00:27 | 80m | - / - | AG2J | -2 / - | 2 | Partial |
| 05-14 00:21 | 160m | +4 / - | IW4AOT | -12 / -8 | 4 | ✓ Complete |
| 05-14 00:20 | 160m | +15 / - | G4IRN | -8 / -10 | 5 | ✓ Complete |
| 05-13 23:49 | 40m | 0 / - | DK8HC | - / -12 | 4 | ✓ Confirmed |
| 05-13 23:41 | 80m | - / - | TJ1GD | -1 / - | 3 | Partial |
| 05-11 23:19 | 40m | -14 / - | ON1BH | -17 / +1 | 2 | Partial |
| 05-11 20:06 | 40m | - / - | TL8BNW | +1 / - | 4 | Partial |
| 05-10 19:26 | 40m | - / -5 | M9MRX | +12 / - | 5 | ✓ Confirmed |
| 05-10 19:24 | 40m | -9 / -14 | ER5DX | +12 / -8 | 3 | Partial |
| 05-09 11:36 | 20m | +6 / - | 2E1HAT | - / - | 5 | Partial |
| 05-09 11:31 | 20m | 0 / - | 2E1HAT | - / - | 5 | Partial |
| 05-09 11:22 | 20m | +1 / - | 2E1HAT | - / - | 9 | Partial |
| 05-09 11:17 | 20m | +2 / - | EA5D | - / -9 | 3 | ✓ Confirmed |
| 05-09 11:13 | 20m | -6 / - | OV9A | - / +1 | 2 | ✓ Confirmed |
| 05-08 02:00 | 80m | - / - | KE0L | -4 / - | 3 | Partial |
| 05-08 01:58 | 80m | - / -21 | N8XY | +3 / - | 3 | ✓ Confirmed |
| 05-08 01:56 | 80m | - / - | WB2AA | -3 / - | 3 | Partial |
| 05-08 01:54 | 80m | -12 / - | EC3A | +8 / -5 | 2 | ✓ Verified |
| 05-08 01:52 | 80m | -21 / - | WP4U | +4 / -14 | 6 | ✓ Verified |
| 05-06 00:10 | 40m | -1 / - | EB3JT | - / +1 | 3 | ✓ Confirmed |
| 05-05 23:58 | 40m | -19 / - | OY1R | - / -4 | 2 | ✓ Confirmed |
| 05-05 22:07 | 20m | -14 / - | JY5IB | - / -9 | 2 | ✓ Confirmed |
| 05-04 23:17 | 40m | +10 / - | SV8DCY | - / +4 | 2 | ✓ Confirmed |
| 05-04 23:11 | 80m | +14 / - | HB9EFK | -9 / -4 | 5 | ✓ Complete |
| 05-02 21:17 | 20m | - / -18 | WA6DKZ | -17 / - | 2 | Partial |
| 05-02 19:59 | 40m | - / - | JR3REX | -3 / - | 2 | Partial |
| 05-02 19:49 | 60m | - / - | 4S7AB | +7 / - | 3 | Partial |
| 05-02 19:47 | 60m | - / - | BA4RF | -6 / - | 2 | Partial |
| 05-02 19:46 | 60m | - / - | 4S7AB | -6 / - | 3 | Partial |
| 05-02 19:00 | 20m | -1 / - | EC3A | - / -10 | 2 | ✓ Confirmed |
| 05-02 18:14 | 20m | +10 / - | SV9TLU | - / - | 4 | ✓ Confirmed |
| 04-29 19:52 | 160m | -6 / - | LX1JX | -16 / -11 | 3 | ✓ Verified |
| 04-29 19:38 | 40m | - / -24 | JA5ICH | +6 / - | 5 | Partial |
| 04-29 00:37 | 20m | -7 / - | CN8NS | - / -6 | 3 | Partial |
| 04-29 00:33 | 20m | -16 / - | K1JXM | - / -12 | 3 | Partial |
| 04-29 00:27 | 80m | -8 / -20 | OH6FSO | +1 / +1 | 5 | ✓ Complete |
| 04-29 00:17 | 40m | -11 / -3 | KW4BY | -18 / - | 2 | Partial |
| 04-28 20:11 | 40m | - / - | TF3G | +5 / - | 5 | Partial |
| 04-25 19:37 | 20m | -14 / - | VK1DO | - / -2 | 3 | ✓ Confirmed |
| 04-25 14:28 | 10m | -4 / - | D2UY | - / - | 2 | ✓ Confirmed |
| 04-23 19:20 | 80m | +1 / +1 | DK7TX | -4 / +3 | 4 | ✓ Complete |
| 04-23 19:15 | 80m | - / -14 | OH6FSO | -4 / - | 5 | ✓ Confirmed |
| 04-23 19:13 | 80m | 0 / - | HA6VV | -1 / -11 | 7 | ✓ Verified |
| 04-23 19:01 | 40m | -5 / -6 | JA4FKX | -8 / - | 4 | ✓ Verified |
Station Log
20m
UTC dB Freq Message 113230 -2 499 OK4SD 2E1HAT JO01 (x9) 180730 -9 2853 BV7SS OK4SD JN79 191330 -17 1277 OK4SD 9M2WAZ RR73 190545 -14 2488 JG1WNO OK4SD 73 172045 +1 2703 SP5GW OK4SD -07 (x2) 173100 -12 2702 C31HS OK4SD JN79
80m
UTC dB Freq Message 020100 -4 578 KE0L OK4SD JN79 (x2) 234045 +4 2134 GM0HZI OK4SD JN79 234115 -1 2134 TJ1GD OK4SD JN79 (x3) 002700 -5 1565 AG2J OK4SD JN79 (x2) 002845 +7 1565 IQ0RU OK4SD JN79 002900 +1 1030 OK4SD IQ0RU +00 002915 +2 1565 IQ0RU OK4SD R+07 002930 -7 1030 OK4SD IQ0RU RR73 002945 +5 1565 IQ0RU OK4SD 73 003100 +5 1606 W2OSR OK4SD JN79 (x2)
160m
UTC dB Freq Message 195230 -7 2669 OK4SD LX1JX -11 (x2) 195315 -16 990 LX1JX OK4SD 73 002015 -9 1558 G4IRN OK4SD JN79 002030 +14 806 OK4SD G4IRN -10 002045 -7 1558 G4IRN OK4SD R+12 002100 +16 806 OK4SD G4IRN RR73 002115 -7 1558 G4IRN OK4SD 73 002130 +4 1558 OK4SD IW4AOT -08 002145 -16 1558 IW4AOT OK4SD R+15 002200 +3 1558 OK4SD IW4AOT RR73 002215 -8 1558 IW4AOT OK4SD 73
40m
UTC dB Freq Message 200645 +1 2091 TL8BNW OK4SD JN79 (x4) 231615 -22 2422 YB1BZV OK4SD JN79 (x2) 231930 -14 1754 OK4SD ON1BH +01 231945 -17 2393 ON1BH OK4SD R+13 232145 -14 2393 YD1DKW OK4SD JN79 234400 -22 2318 UZ5DU OK4SD JN79 234945 +4 533 OK4SD DK8HC JO42 (x4) 235400 -18 2456 5Z4VJ OK4SD JN79
60m
UTC dB Freq Message 194600 -6 2314 4S7AB OK4SD JN79 (x3) 194745 -3 2314 BA4RF OK4SD JN79 (x2) 194930 +10 2314 4S7AB OK4SD JN79 (x3)
10m
UTC dB Freq Message 142800 -4 2455 OK4SD D2UY +00 (x2)