UB4CLH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UB4CLH, decoded by SO8OO in southeastern Poland. 572 related FT8 messages, 33 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 30 UTC dates. Heard between 2026-06-21 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.
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Overview
Frequent QSO partners observed at SO8OO
Stations UB4CLH worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by UB4CLH
Approximate centre of LO22, decoded 2026-08-23 16:59 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 | UB4CLH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 17:16 | 40m | -14 / - | RK6OQ | - / -14 | 6 | Partial capture |
| 08-23 17:12 | 40m | -14 / -5 | RK6OQ | -1 / -10 | 2 | Partial capture |
| 08-23 17:06 | 40m | -12 / -3 | RN3ZBX | +12 / - | 3 | ✓ Closing observed |
| 08-23 16:57 | 20m | -8 / - | UB0SMX/P | - / -19 | 2 | ✓ Closing fragment |
| 08-23 16:49 | 20m | -4 / - | XU7O | - / -21 | 2 | Partial capture |
| 08-23 16:48 | 20m | -6 / -6 | A41KB | -2 / -5 | 5 | ✓ Full exchange observed |
| 08-23 16:45 | 20m | 0 / -14 | EA5HEU | +6 / -12 | 4 | ✓ Full exchange observed |
| 08-23 16:42 | 20m | 0 / - | <...> | - / -20 | 4 | Partial capture |
| 08-23 16:40 | 20m | - / -14 | 7Z1BM | -10 / - | 2 | ✓ Closing fragment |
| 08-23 15:45 | 20m | -12 / - | BH2WTV | - / -18 | 2 | ✓ Closing fragment |
| 08-23 15:40 | 20m | -15 / - | XU7O | - / -17 | 3 | Partial capture |
| 08-23 15:25 | 20m | -12 / -13 | IK1MJK/P | -6 / - | 4 | ✓ Closing observed |
| 08-23 15:00 | 20m | -10 / - | UA2FFD | - / -7 | 2 | Partial capture |
| 08-23 14:59 | 20m | -8 / - | UA9MMZ | - / -18 | 2 | ✓ Closing fragment |
| 08-23 14:39 | 20m | -10 / -23 | RA6FC | -1 / -19 | 7 | Partial capture |
| 08-23 06:39 | 20m | - / - | F5NNN | -17 / - | 4 | Partial capture |
| 08-23 06:38 | 20m | - / -21 | F4LNM | 0 / - | 2 | Partial capture |
| 08-23 06:37 | 20m | -14 / -5 | F1ODM | -3 / -19 | 4 | ✓ Full exchange observed |
| 08-23 06:29 | 20m | -8 / -3 | R3LDK | +4 / - | 9 | ✓ Closing observed |
| 08-23 06:26 | 20m | -10 / - | R9CA | - / -22 | 2 | ✓ Closing fragment |
| 08-22 19:21 | 20m | - / -15 | 9A2RD | +14 / - | 2 | ✓ Closing fragment |
| 08-22 19:16 | 20m | - / -12 | IQ4JO | +11 / - | 3 | ✓ Closing fragment |
| 08-22 16:59 | 20m | - / -17 | RW6HPS | -6 / - | 5 | Partial capture |
| 08-22 16:51 | 20m | - / -17 | RW6HPS | -13 / - | 5 | Partial capture |
| 08-22 16:44 | 20m | - / -18 | DL7RAY | -12 / - | 4 | ✓ Closing fragment |
| 08-22 15:29 | 20m | -4 / -18 | BD8SN | -20 / -19 | 3 | ✓ Full exchange observed |
| 08-22 15:28 | 20m | -6 / -16 | R3PLN/P | -10 / -14 | 4 | ✓ Full exchange observed |
| 08-22 12:14 | 20m | - / - | RG6S | -6 / - | 2 | ✓ Closing fragment |
| 08-22 09:11 | 20m | - / - | 9A2RD | -1 / - | 3 | Partial capture |
| 08-22 07:56 | 20m | - / +1 | SP2GK | +1 / - | 2 | ✓ Closing fragment |
| 08-22 07:27 | 20m | - / -17 | DL8WEM | +10 / - | 2 | ✓ Closing fragment |
| 08-22 04:29 | 20m | - / -21 | DK7ZT | -3 / - | 4 | Partial capture |
| 08-22 04:22 | 20m | - / -10 | UN7LEW | -7 / - | 2 | Partial capture |
| 08-22 02:30 | 40m | -18 / - | W6NWS | - / -8 | 5 | Partial capture |
| 08-22 02:28 | 40m | -18 / - | R4FBT | - / -16 | 2 | Partial capture |
| 08-21 15:38 | 20m | - / - | DL5SUA | -8 / - | 4 | Partial capture |
| 08-20 17:29 | 20m | -20 / - | RL2F | - / -6 | 2 | ✓ Closing fragment |
| 08-20 17:27 | 20m | -14 / - | AO25FDM | - / -15 | 2 | Partial capture |
| 08-20 16:57 | 20m | -8 / - | CS8ABF | - / -15 | 2 | Partial capture |
| 08-20 16:56 | 20m | - / -15 | PD0MNO | -16 / - | 2 | ✓ Closing fragment |
| 08-20 16:10 | 20m | -12 / - | RX6LG | - / -10 | 2 | Partial capture |
| 08-20 15:47 | 20m | - / - | IK6GPZ | -15 / - | 3 | Partial capture |
| 08-18 15:15 | 20m | - / -13 | RA9MI | -14 / - | 2 | ✓ Closing fragment |
| 08-17 16:43 | 40m | - / -13 | 9A1CCB | +1 / - | 3 | ✓ Closing fragment |
| 08-16 18:27 | 40m | -22 / - | RX3ASQ | - / +2 | 2 | Partial capture |
| 08-16 16:51 | 80m | - / -4 | RD6OX | -4 / - | 2 | ✓ Closing fragment |
| 08-16 16:21 | 40m | - / 0 | R2BT | +1 / - | 2 | ✓ Closing fragment |
| 08-16 15:38 | 40m | - / 0 | RN3ZBX | -11 / - | 2 | ✓ Closing fragment |
| 08-16 15:22 | 40m | - / -16 | HA3GO | -14 / - | 2 | ✓ Closing fragment |
| 08-16 12:13 | 20m | - / - | EB3JT | +1 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 023300 -20 1972 CQ UB4CLH LO22 023715 -24 1989 K9EL UB4CLH -11 023815 -24 1989 OA4ENG UB4CLH -05 170630 +12 708 UB4CLH RN3ZBX R-03 170645 -12 2120 RN3ZBX UB4CLH RR73 170700 +11 708 UB4CLH RN3ZBX 73 171215 -14 2202 RK6OQ UB4CLH -10 171230 -1 675 UB4CLH RK6OQ R-05 171645 -14 2202 RK6OQ UB4CLH -14 (x6) 172945 -10 2163 R3UDU UB4CLH RR73
UTC dB Audio Message 164600 +0 2083 EA5HEU UB4CLH -12 164615 +5 1895 UB4CLH EA5HEU R-14 (x2) 164845 -8 2083 A41KB UB4CLH -05 164945 -5 2083 XU7O UB4CLH -21 (x2) 165030 -4 815 UB4CLH A41KB R-06 (x3) 165200 -4 815 UB4CLH RR73; CT2IGO <...> -16 165215 -4 805 A41KB UB4CLH 73 165745 -11 1812 UB0SMX/P UB4CLH -19 (x2) 165845 -6 1811 CQ UB4CLH LO22 (x2)
UTC dB Audio Message 183145 -1 1783 UB4CLH R3GO R+02 183200 -17 2022 R3GO UB4CLH RR73 183215 +1 1783 UB4CLH R3GO 73 183230 -20 2022 UB4CMT UB4CLH -16 (x3) 172700 -2 612 UB4CLH RG2A KO75 (x4) 165715 -11 619 RA0SCA UB4CLH -15 165145 -2 603 UB4CLH RD6OX R-04 (x2) 165330 -13 2402 UB4CLH R9CS/P 73 165700 -13 996 UB4CLH R6ML 73
UTC dB Audio Message 184400 -1 2760 UB4CLH RA1TI 73 184600 -7 1073 UB4CLH RV3LO KO64 (x9) 073615 -20 2091 UB4CLH UA4FKT LO23 (x2) 081730 +2 2641 UB4CLH F1PBZ -18 (x3)
UTC dB Audio Message 183315 -15 939 UB4CLH RA7T -19 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.