OK4SD — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OK4SD, decoded by SO8OO in southeastern Poland. 248 related FT8 messages, 106 CQ messages, observed on 160m, 80m, 60m, 40m, 20m, 10m, across 22 UTC dates. Heard between 2026-05-26 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 OK4SD worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by OK4SD
Approximate centre of JN79, decoded 2026-08-23 20:21 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 | OK4SD S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 16:59 | 40m | +10 / - | SM2OTU | - / - | 2 | Partial capture |
| 08-23 16:56 | 40m | +8 / - | YB7HBD | - / - | 2 | Partial capture |
| 08-23 16:49 | 40m | +11 / - | ZL2NU | - / - | 8 | Partial capture |
| 08-23 16:30 | 20m | - / -10 | EC3A | -2 / - | 2 | ✓ Closing fragment |
| 08-23 05:38 | 20m | - / +10 | N8HRZ | 0 / - | 3 | ✓ Closing fragment |
| 08-23 05:30 | 20m | - / -9 | R2AL | -8 / - | 2 | ✓ Closing fragment |
| 08-22 16:43 | 20m | +8 / - | W4TME | - / - | 2 | Partial capture |
| 08-22 16:40 | 20m | +9 / - | VU3KOD | - / - | 4 | Partial capture |
| 08-22 16:29 | 20m | -6 / -1 | OT1C | 0 / - | 4 | Partial capture |
| 08-22 16:14 | 20m | +16 / - | 4S6YRW | - / - | 5 | Partial capture |
| 08-22 16:06 | 20m | +6 / - | FR5FK | - / -11 | 5 | ✓ Closing fragment |
| 08-22 15:55 | 20m | -3 / - | 4S6YRW | - / - | 2 | Partial capture |
| 08-22 09:48 | 40m | +11 / - | OE8PIT | - / - | 3 | Partial capture |
| 08-22 09:45 | 40m | +9 / -1 | OK1CT | -2 / +7 | 6 | ✓ Full exchange observed |
| 08-22 09:43 | 40m | +8 / - | OE8PIT | - / - | 2 | Partial capture |
| 08-21 20:38 | 40m | +8 / - | JF4VZT | - / +8 | 4 | ✓ Closing fragment |
| 08-21 20:34 | 40m | -2 / - | HV0KIS | - / - | 3 | Partial capture |
| 08-21 20:29 | 40m | +1 / - | VK3NX | - / - | 5 | Partial capture |
| 08-21 20:26 | 40m | +5 / - | OS4K | - / - | 2 | Partial capture |
| 08-21 20:24 | 40m | -4 / - | JH4JBJ | - / - | 3 | ✓ Closing fragment |
| 08-21 20:19 | 80m | 0 / - | JH4IFF | - / - | 4 | Partial capture |
| 08-21 20:14 | 80m | -4 / - | JF4VZT | - / - | 4 | Partial capture |
| 08-21 20:12 | 80m | -3 / - | HK1KIN | - / +2 | 3 | Partial capture |
| 08-21 20:10 | 80m | +1 / - | EI4KF | - / - | 3 | Partial capture |
| 08-21 19:40 | 20m | +8 / - | K2KN | - / - | 2 | Partial capture |
| 08-21 19:39 | 20m | +8 / - | K0DTM | - / - | 3 | Partial capture |
| 08-21 19:28 | 20m | +5 / - | ZV8R | - / -2 | 3 | Partial capture |
| 08-21 19:22 | 40m | +5 / - | ZL2NU | - / - | 6 | Partial capture |
| 08-21 19:11 | 40m | +2 / - | ZL2NU | - / -18 | 6 | ✓ Closing fragment |
| 08-21 19:10 | 40m | +8 / - | ZL1VAH | - / - | 2 | Partial capture |
| 08-21 18:59 | 40m | +4 / - | ZL2NU | - / -23 | 14 | Partial capture |
| 08-21 18:57 | 40m | +4 / - | JQ1PJO | - / - | 2 | Partial capture |
| 08-19 20:48 | 40m | -2 / - | VK2NN | - / - | 4 | Partial capture |
| 08-19 20:44 | 40m | -6 / - | <...> | - / - | 5 | Partial capture |
| 08-19 20:41 | 40m | +2 / - | OS4K | - / - | 3 | Partial capture |
| 08-16 18:50 | 20m | 0 / - | W2OSR | - / -10 | 4 | ✓ Closing fragment |
| 08-16 18:48 | 20m | +2 / - | OI8MPK | - / - | 3 | Partial capture |
| 08-16 18:45 | 20m | +7 / - | KB1EFS | - / - | 5 | Partial capture |
| 08-16 18:44 | 20m | +8 / - | N2BJ | - / -12 | 2 | ✓ Closing fragment |
| 08-15 09:56 | 10m | - / -13 | CT3MD | -8 / - | 2 | ✓ Closing fragment |
| 08-14 19:19 | 20m | - / -22 | CR7BRV | -9 / - | 3 | Partial capture |
| 08-12 21:24 | 20m | +6 / - | KW4J | - / -16 | 2 | ✓ Closing fragment |
| 08-12 21:20 | 20m | +1 / - | N0FXQ | - / -15 | 5 | ✓ Closing fragment |
| 08-12 21:07 | 20m | -1 / - | N0FXQ | - / -8 | 2 | ✓ Closing fragment |
| 08-12 20:56 | 20m | -4 / - | KN1B | - / -17 | 4 | Partial capture |
| 08-12 20:49 | 20m | -6 / - | W2MWS | - / -16 | 11 | Partial capture |
| 08-12 20:42 | 20m | +7 / - | W1WCI | - / - | 5 | Partial capture |
| 08-12 20:37 | 20m | +4 / - | KQ4IJI | - / - | 10 | Partial capture |
| 08-12 20:34 | 20m | +10 / - | EA3GXK | - / -22 | 3 | Partial capture |
| 08-12 20:11 | 20m | - / - | PA7TT | +2 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 164030 +10 855 VU3KOD OK4SD JN79 (x4) 164315 +14 855 W4TME OK4SD JN79 (x2) 053030 -7 643 OK4SD R2AL R-09 (x2) 053200 -16 1053 OK4SD R3EDI RR73 053830 -1 2605 OK4SD N8HRZ +10 (x3) 163045 +0 585 OK4SD EC3A -10 (x2) 202115 +3 769 N8PFK OK4SD JN79
UTC dB Audio Message 094845 +11 3038 OE8PIT OK4SD JN79 (x3) 164900 +7 379 ZL2NU OK4SD JN79 (x8) 165645 +8 3045 YB7HBD OK4SD JN79 (x2) 165945 +13 3045 SM2OTU OK4SD JN79 (x2)
UTC dB Audio Message 201030 +0 2096 EI4KF OK4SD JN79 (x3) 201200 -3 2096 HK1KIN OK4SD +02 (x3) 201445 -6 2096 JF4VZT OK4SD JN79 (x4) 201845 +1 2096 JG3TRB OK4SD JN79 201915 -2 2096 JH4IFF OK4SD JN79 (x4)
UTC dB Audio Message 192630 +0 385 OK4SD 5H1KB -04 190545 -9 2498 EX8ABR OK4SD JN79 (x3) 195230 -7 2516 ER3CT OK4SD JN79 (x4) 195430 -9 2516 EA4CFT OK4SD -13 (x2) 162715 -22 1906 OK4SD F4FSY +00 (x2) 145600 -9 1967 OK4SD SV1CQN RR73 095630 -9 1094 OK4SD CT3MD -13 (x2)
UTC dB Audio 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)
UTC dB Audio 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
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.