YB4KAR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YB4KAR, decoded by SO8OO in southeastern Poland. 491 related FT8 messages, 88 CQ messages, observed on 20m, 10m, across 19 UTC dates. Heard between 2026-05-23 and 2026-08-09.
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.
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Overview
Frequent QSO partners observed at SO8OO
Stations YB4KAR worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by YB4KAR
Approximate centre of OI25, decoded 2026-06-06 14:11 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 | YB4KAR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-09 18:07 | 20m | - / - | PA7TT | -12 / - | 3 | Partial capture |
| 08-09 18:05 | 20m | - / - | DD9MB | -16 / - | 2 | Partial capture |
| 08-09 18:04 | 20m | - / -16 | EA3GXK | -14 / - | 2 | ✓ Closing fragment |
| 08-09 18:02 | 20m | - / - | UB3YGA | -15 / - | 3 | Partial capture |
| 08-09 17:59 | 20m | - / -14 | RU3QR | -7 / - | 4 | ✓ Closing fragment |
| 08-09 17:56 | 20m | - / -16 | DJ0MDC | +2 / - | 4 | ✓ Closing fragment |
| 08-09 17:45 | 20m | - / - | IK4LZH | -5 / - | 3 | Partial capture |
| 08-09 17:44 | 20m | - / - | DL5FAC | -8 / - | 6 | Partial capture |
| 08-09 17:11 | 20m | - / -2 | LZ2HA | -10 / - | 4 | ✓ Closing fragment |
| 08-09 16:48 | 20m | - / - | PD1BJO | -18 / - | 2 | Partial capture |
| 08-09 16:47 | 20m | - / -14 | RJ3DC | -18 / - | 3 | ✓ Closing fragment |
| 08-09 16:44 | 20m | - / -16 | EA7ATM | -11 / - | 3 | Partial capture |
| 08-09 16:33 | 20m | - / -10 | UT4QM | -8 / - | 3 | ✓ Closing fragment |
| 08-09 16:26 | 20m | - / -13 | DH2RL | -10 / - | 3 | ✓ Closing fragment |
| 08-09 16:24 | 20m | - / -9 | 9A1DR | -16 / - | 2 | ✓ Closing fragment |
| 08-09 16:24 | 20m | - / - | DF7EF | -2 / - | 2 | ✓ Closing fragment |
| 08-09 16:22 | 20m | - / - | R6OP | -13 / - | 2 | Partial capture |
| 08-09 16:21 | 20m | - / - | DH2RL | -8 / - | 3 | Partial capture |
| 08-09 16:10 | 20m | - / -16 | S58S | -8 / - | 7 | ✓ Closing fragment |
| 08-09 16:06 | 20m | - / -5 | OK2CNI | +8 / - | 3 | ✓ Closing fragment |
| 08-08 15:42 | 20m | - / - | PD1SL | -6 / - | 4 | Partial capture |
| 08-08 15:32 | 20m | - / -11 | F4HEN | -1 / - | 2 | ✓ Closing fragment |
| 08-08 15:31 | 20m | - / -11 | DL1IP | +3 / - | 2 | ✓ Closing fragment |
| 08-08 15:28 | 20m | - / - | PD1ADA | -1 / - | 5 | Partial capture |
| 08-08 15:28 | 20m | - / - | PD1SL | -14 / - | 3 | Partial capture |
| 08-08 15:22 | 20m | - / -15 | F4MZI | -13 / - | 3 | Partial capture |
| 08-08 15:19 | 20m | - / -15 | F4MZI | -16 / - | 2 | Partial capture |
| 08-08 15:16 | 20m | - / - | R6DVV | -8 / - | 2 | Partial capture |
| 08-08 15:01 | 20m | - / -20 | RX6DA | -14 / - | 9 | Partial capture |
| 07-21 21:44 | 20m | - / - | IW1PVB | -3 / - | 3 | Partial capture |
| 07-21 21:36 | 20m | - / - | EA1D | -17 / - | 5 | Partial capture |
| 07-21 21:36 | 20m | - / -14 | BI4XDT | -1 / - | 3 | ✓ Closing fragment |
| 07-21 21:26 | 20m | - / -25 | M0VGB | -12 / - | 3 | Partial capture |
| 07-21 21:19 | 20m | - / +5 | F1PBZ | +4 / - | 4 | Partial capture |
| 07-21 21:17 | 20m | - / -16 | IT9BCC | -4 / - | 2 | Partial capture |
| 07-21 21:14 | 20m | - / - | JF4HDR | -7 / - | 2 | Partial capture |
| 07-21 21:10 | 20m | - / - | PA1PXL | -4 / - | 3 | Partial capture |
| 07-19 13:57 | 20m | - / - | CT1BFP | -18 / - | 6 | Partial capture |
| 07-19 13:52 | 20m | - / - | EW1MN | 0 / - | 4 | Partial capture |
| 07-19 13:50 | 20m | - / - | DL1R | -7 / - | 3 | Partial capture |
| 07-19 13:47 | 20m | - / - | CT1BFP | -20 / - | 8 | Partial capture |
| 07-17 15:10 | 20m | - / -11 | EA3CUU | -12 / - | 3 | Partial capture |
| 07-17 14:59 | 20m | - / -21 | S51CC | -6 / - | 4 | ✓ Closing fragment |
| 07-17 14:56 | 20m | - / -14 | F1PBZ | -13 / - | 2 | Partial capture |
| 07-17 14:51 | 20m | - / - | PA3BQQ | -2 / - | 6 | Partial capture |
| 07-17 14:31 | 20m | - / -21 | US5HL | -6 / - | 2 | Partial capture |
| 07-17 14:12 | 20m | - / - | R2GFD | -14 / - | 2 | Partial capture |
| 07-13 18:43 | 20m | - / - | TA4WH | -20 / - | 2 | Partial capture |
| 07-13 18:39 | 20m | - / - | F4MMA | -18 / - | 4 | Partial capture |
| 07-13 18:19 | 20m | - / -15 | US5HL | -10 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175815 -1 3031 YB4KAR DJ0MDC 73 175915 -6 1250 YB4KAR RU3QR -14 (x4) 180245 -14 1523 YB4KAR UB3YGA KO62 (x3) 180445 -12 943 YB4KAR EA3GXK R-16 180515 -17 1306 YB4KAR DD9MB JN58 180515 -15 943 YB4KAR EA3GXK 73 180545 -16 1306 YB4KAR DD9MB JN58 180745 -14 945 YB4KAR PA7TT JO33 (x3)
UTC dB Audio Message 140815 -24 1677 CQ YB4KAR OI25 a1 141115 -23 1676 EA4MF YB4KAR RR73 141145 -22 1676 CQ YB4KAR OI25 141400 -5 1676 YB4KAR R6ZAA KN98 (x2) 142130 +11 2034 YB4KAR R3DMS KO85 (x5) 143800 +0 1652 YB4KAR SV4RRK KM09 (x3) 151600 -4 1269 YB4KAR SV1AVD KM17 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.