F4MBU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4MBU, decoded by SO8OO in southeastern Poland. 2,298 related FT8 messages, 1,096 CQ messages, observed on 80m, 40m, 20m, 10m, across 76 UTC dates. Heard between 2026-05-25 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 F4MBU worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by F4MBU
Approximate centre of JN23, decoded 2026-08-23 23:07 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 | F4MBU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 23:08 | 40m | - / - | IN3IZQ | -10 / - | 6 | Partial capture |
| 08-23 22:55 | 40m | - / -15 | F1PBZ | -3 / - | 3 | Partial capture |
| 08-23 22:51 | 40m | - / -10 | OM3PR | -5 / - | 2 | ✓ Closing fragment |
| 08-23 22:48 | 40m | - / - | DL7ACA | +12 / - | 4 | Partial capture |
| 08-23 22:41 | 40m | -12 / -13 | SM4AZQ | +10 / -2 | 4 | ✓ Full exchange observed |
| 08-23 22:41 | 40m | - / - | ON4MAP | -10 / - | 4 | Partial capture |
| 08-23 22:32 | 40m | - / -8 | IZ8PPI | -18 / - | 2 | Partial capture |
| 08-23 22:32 | 40m | - / - | DL7ACA | +12 / - | 2 | Partial capture |
| 08-23 22:27 | 40m | -4 / - | SQ1EIC | - / -10 | 2 | ✓ Closing fragment |
| 08-23 22:21 | 40m | - / - | IN3IZQ | -14 / - | 2 | Partial capture |
| 08-23 22:19 | 40m | -4 / - | TN8GD | - / -18 | 3 | ✓ Closing fragment |
| 08-23 22:18 | 40m | - / - | RN6HK | +3 / - | 3 | Partial capture |
| 08-23 22:13 | 40m | - / -6 | RN6HK | +2 / - | 2 | Partial capture |
| 08-23 22:10 | 40m | -6 / - | RA0SCA | - / - | 4 | Partial capture |
| 08-23 22:08 | 40m | -6 / - | EB1LA | - / -13 | 4 | Partial capture |
| 08-23 22:02 | 40m | - / - | F5SJC | -1 / - | 3 | Partial capture |
| 08-23 21:57 | 40m | -3 / - | XV9B | - / - | 3 | Partial capture |
| 08-23 21:56 | 40m | -4 / - | BG2GWN | - / - | 3 | Partial capture |
| 08-23 21:56 | 40m | - / -12 | F1PBZ | -2 / - | 2 | Partial capture |
| 08-23 21:53 | 40m | -1 / - | CX6TU | - / - | 3 | Partial capture |
| 08-23 21:53 | 40m | - / - | F1IQH | -5 / - | 4 | Partial capture |
| 08-22 22:00 | 40m | - / -8 | DL3HN | -7 / - | 3 | ✓ Closing fragment |
| 08-22 21:54 | 40m | - / - | F1IQH | -4 / - | 3 | Partial capture |
| 08-22 21:14 | 20m | +1 / - | N1NRL | -12 / -16 | 3 | Partial capture |
| 08-21 23:25 | 20m | -12 / - | XU7O | - / - | 3 | Partial capture |
| 08-21 23:20 | 20m | -8 / - | XU7O | - / - | 3 | Partial capture |
| 08-21 23:17 | 20m | -10 / - | XU7O | - / - | 2 | Partial capture |
| 08-21 23:13 | 20m | -12 / - | XU7O | - / - | 2 | Partial capture |
| 08-21 22:43 | 40m | -12 / - | BD8ELZ | - / - | 6 | Partial capture |
| 08-21 22:39 | 40m | -15 / - | BD8ENX | - / - | 4 | Partial capture |
| 08-21 22:24 | 40m | - / - | DL7ACA | +7 / - | 3 | Partial capture |
| 08-21 22:08 | 40m | -10 / - | EW8AAC | - / -8 | 4 | Partial capture |
| 08-21 22:05 | 40m | - / - | TA3NK | -3 / - | 5 | Partial capture |
| 08-21 21:59 | 80m | - / -6 | HB3YBG | -8 / - | 2 | Partial capture |
| 08-21 21:54 | 20m | -13 / - | XU7O | - / - | 2 | Partial capture |
| 08-20 21:08 | 40m | - / - | F1IQH | -9 / - | 2 | Partial capture |
| 08-19 22:42 | 40m | - / - | OK1WCF | -14 / - | 3 | Partial capture |
| 08-19 22:39 | 40m | - / - | RN6HK | 0 / - | 2 | Partial capture |
| 08-19 22:12 | 40m | -7 / - | VJ6X | - / - | 3 | Partial capture |
| 08-19 22:08 | 40m | - / - | OK1WCF | -20 / - | 2 | Partial capture |
| 08-19 22:03 | 40m | - / - | F1IQH | -4 / - | 3 | Partial capture |
| 08-18 21:44 | 40m | - / - | F1IQH | -14 / - | 2 | Partial capture |
| 08-17 23:26 | 40m | - / - | EA5HM | -18 / - | 2 | Partial capture |
| 08-17 22:27 | 20m | - / - | CT1BFP | -20 / - | 7 | Partial capture |
| 08-17 22:02 | 20m | - / - | DK4ET | -9 / - | 3 | Partial capture |
| 08-16 23:14 | 40m | - / - | IU5VLR | -15 / - | 3 | Partial capture |
| 08-13 22:33 | 40m | -18 / - | BD8ELZ | - / -26 | 3 | Partial capture |
| 08-13 22:29 | 40m | -18 / - | OA4ENG | - / - | 2 | Partial capture |
| 08-13 22:19 | 40m | - / +5 | DF3QL | -13 / - | 4 | Partial capture |
| 08-13 22:17 | 40m | - / -9 | IU2HUQ | -6 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 224930 +17 601 F4MBU DL7ACA JO40 225100 -4 602 F4MBU OM3PR R-10 (x2) 225400 +12 601 F4MBU DL7ACA JO40 225530 -2 2343 F4MBU F1PBZ -15 (x3) 230230 -13 601 CQ F4MBU JN23 (x2) 230815 -9 602 F4MBU IN3IZQ JN56 (x6)
UTC dB Audio Message 210945 +3 938 CQ F4MBU JN23 (x6) 211400 -12 330 F4MBU N1NRL FN41 211415 +1 939 N1NRL F4MBU -16 (x2) 211815 -10 878 CQ F4MBU JN23 a1 (x4) 212645 -15 911 JA1SJS F4MBU JN23 212715 -14 911 KB1FJC F4MBU JN23
UTC dB Audio Message 230615 -17 735 DO1OAS F4MBU R-21 230630 -16 734 F4MBU DO1OAS RR73 230630 -24 1751 F4MBU EA8AR IL18 230645 -17 735 DO1OAS F4MBU 73 230700 -22 1752 F4MBU EA8AR IL18 230745 -15 735 CQ F4MBU JN23 (x3) 231200 +0 1061 F4MBU OH2BVT -23 231215 -18 735 CQ F4MBU JN23 (x3) 215900 -14 809 F4MBU HB3YBG JN36 (x2) 220230 -16 811 F4MBU DG5PW JO30
UTC dB Audio Message 150815 -14 969 CQ F4MBU JN23 (x2) 144330 -4 629 F4MBU DK8HC JO42 (x3) 145230 -7 866 F4MBU G0ANS -07 (x2) 150230 +5 266 F4MBU F5CUN JN26 (x5) 151400 -18 865 F4MBU DL9YNG JN48 141315 +3 664 F4MBU SV1CQN -01 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.