F4JSZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4JSZ, decoded by SO8OO in southeastern Poland. 129 related FT8 messages, 21 CQ messages, observed on 160m, 80m, 60m, 40m, 20m, 10m, across 13 UTC dates. Heard between 2026-05-28 and 2026-08-20.
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 F4JSZ worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by F4JSZ
Approximate centre of JN05, decoded 2026-08-20 19:18 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 | F4JSZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-20 19:21 | 20m | 0 / - | XU7O | -5 / -8 | 3 | ✓ Closing observed |
| 08-20 19:17 | 20m | +2 / - | XU7O | - / - | 2 | Partial capture |
| 08-20 19:07 | 20m | - / -16 | XU7O | -3 / - | 2 | Partial capture |
| 08-20 18:45 | 60m | -9 / - | OJ0JR | - / -7 | 4 | ✓ Closing fragment |
| 08-18 19:52 | 60m | -18 / - | OJ0YL | - / - | 3 | Partial capture |
| 08-08 15:36 | 20m | - / - | M7KPQ | -18 / - | 3 | Partial capture |
| 08-08 15:32 | 20m | -21 / -4 | HB9HYO | -20 / +5 | 2 | Partial capture |
| 08-08 15:31 | 20m | - / - | F4HSB | -12 / - | 2 | Partial capture |
| 08-08 15:26 | 20m | -21 / - | VO1IV | - / -15 | 4 | ✓ Closing fragment |
| 08-05 06:03 | 20m | -12 / - | SV8NAJ | - / +2 | 2 | ✓ Closing fragment |
| 07-30 19:02 | 20m | -12 / - | 6K2MAS | - / - | 3 | Partial capture |
| 07-30 18:59 | 20m | -7 / - | BV7RR | - / - | 3 | Partial capture |
| 07-30 18:49 | 20m | -5 / - | BA7SAY | - / - | 11 | Partial capture |
| 07-30 18:46 | 20m | -6 / - | 6K2MAS | - / - | 3 | Partial capture |
| 07-30 18:43 | 20m | -17 / - | BV7RR | - / - | 2 | Partial capture |
| 07-13 19:18 | 40m | - / - | DK3TNA | -22 / - | 2 | Partial capture |
| 07-13 19:16 | 40m | - / -3 | IQ4JO | +5 / - | 2 | Partial capture |
| 07-13 06:26 | 20m | -21 / -11 | DK3TNA | -14 / - | 3 | ✓ Closing observed |
| 07-13 06:23 | 20m | - / -10 | SP1EXD | -8 / - | 3 | Partial capture |
| 06-22 05:16 | 20m | -1 / - | K7CTV | - / -22 | 2 | Partial capture |
| 06-22 05:12 | 20m | -9 / - | W5ART | - / -14 | 2 | ✓ Closing fragment |
| 06-21 07:25 | 20m | +3 / - | 3G0YM | - / - | 5 | Partial capture |
| 06-20 05:21 | 20m | 0 / - | 3G0YM | - / - | 23 | Partial capture |
| 06-20 05:03 | 20m | +4 / - | 3G0YM | - / - | 21 | Partial capture |
| 06-18 04:03 | 60m | -7 / - | F5HNQ | -10 / +7 | 7 | Partial capture |
| 06-18 04:00 | 60m | -10 / -10 | LZ2XF | -4 / -1 | 4 | ✓ Full exchange observed |
| 06-18 03:57 | 60m | -8 / - | F5MYK | -15 / -5 | 3 | ✓ Closing observed |
| 06-18 03:53 | 60m | -8 / -9 | DD6ZV | +10 / -5 | 10 | Partial capture |
| 06-18 03:53 | 60m | -6 / - | F5HNQ | -14 / -1 | 4 | Partial capture |
| 06-18 03:53 | 60m | - / - | F5MYK | -15 / - | 2 | Partial capture |
| 06-17 14:41 | 20m | -9 / - | 9M8DEN | - / - | 2 | Partial capture |
| 06-15 14:38 | 10m | -10 / - | A71AH | - / - | 2 | Partial capture |
| 06-15 14:37 | 10m | -12 / - | DN9BLN | - / - | 2 | ✓ Closing fragment |
| 06-15 14:26 | 10m | - / -17 | PY5TD | -14 / - | 4 | ✓ Closing fragment |
| 06-15 14:24 | 10m | - / -2 | IQ4JO | 0 / - | 2 | Partial capture |
| 06-02 03:17 | 160m | - / -19 | DD0AM | -9 / - | 5 | Partial capture |
| 05-31 18:43 | 20m | - / -1 | R3LDK | +8 / - | 2 | Partial capture |
| 05-29 19:12 | 60m | -8 / - | OE5YCP | - / -14 | 4 | ✓ Closing fragment |
| 05-29 19:09 | 60m | -9 / 0 | LB5WB | -6 / -10 | 3 | Partial capture |
| 05-29 19:08 | 60m | -6 / -1 | OZ1SMB | -17 / -2 | 5 | ✓ Full exchange observed |
| 05-29 19:07 | 60m | -6 / +9 | F5LMJ | -14 / - | 3 | ✓ Closing observed |
| 05-29 19:03 | 60m | - / +2 | ON7GB | -4 / - | 8 | ✓ Closing fragment |
| 05-29 19:02 | 60m | -6 / - | DD6ZV | +3 / 0 | 4 | Partial capture |
| 05-29 19:02 | 60m | -9 / +2 | DK7ZT | -16 / -3 | 3 | ✓ Full exchange observed |
| 05-29 19:02 | 60m | - / +5 | IK4CBO | -12 / - | 4 | Partial capture |
| 05-29 09:20 | 20m | -16 / -20 | IQ4JO | +6 / - | 3 | ✓ Closing observed |
| 05-29 09:18 | 20m | - / -10 | R5AV | -2 / - | 2 | ✓ Closing fragment |
| 05-29 09:16 | 20m | -18 / -11 | UR5VPR | -6 / -3 | 3 | ✓ Full exchange observed |
| 05-29 09:02 | 20m | - / -24 | RU3QR | -6 / - | 5 | Partial capture |
| 05-29 08:51 | 20m | - / +7 | CT1BFP | -18 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 153230 -21 1075 HB9HYO F4JSZ +05 153315 -20 1662 F4JSZ HB9HYO R-04 153615 -18 1573 F4JSZ M7KPQ IO82 153645 -23 1857 F4JSZ G4PEY IO91 153645 -18 1573 F4JSZ M7KPQ IO82 (x2) 190700 -3 486 F4JSZ XU7O -16 (x2) 191145 -6 809 XU7O F4JSZ JN05 (x4) 192200 -5 486 F4JSZ XU7O RR73 192215 +0 685 XU7O F4JSZ 73 192300 +1 686 F4JSZ YO4NF -13
UTC dB Audio Message 040630 -8 653 F5HNQ F4JSZ +06 (x2) 040730 -8 653 CQ F4JSZ JN05 (x2) 195245 -14 2092 OJ0YL F4JSZ JN05 (x4) 200700 -16 1867 F4JSZ OJ0YL RR73 201400 -16 1807 F4JSZ RR73; PE1OFJ <...> -10 184545 -9 791 OJ0JR F4JSZ JN05 (x3) 184700 +10 378 F4JSZ RR73; LA5LJA <...> +02 184715 -11 791 OJ0JR F4JSZ 73
UTC dB Audio Message 192545 -7 1584 F4JSZ G8VJU JO01 191215 -19 1364 DK4RH F4JSZ JN05 191400 -19 1240 F4JSZ ON5RJ R-16 191615 +1 2762 F4JSZ IQ4JO JN63 (x2) 191730 -19 1364 SP9JMZ F4JSZ -19 191800 -22 1364 CQ F4JSZ JN05 191845 -23 1389 F4JSZ DK3TNA JO62 (x2)
UTC dB Audio Message 185930 -23 1703 CQ F4JSZ JN05
UTC dB Audio Message 195945 -15 2316 F4JSZ PY2DPM R+08 (x2) 142415 +3 2779 F4JSZ IQ4JO JN63 (x2) 142545 -10 1612 F4JSZ IZ0MYH 73 142615 -17 1067 F4JSZ PY5TD GG54 (x4) 143430 -16 1067 <...> F4JSZ JN05 143700 -12 1067 DN9BLN F4JSZ RR73 (x2) 143800 -11 1067 A71AH F4JSZ JN05 (x2) 163715 -10 2500 3G0YM F4JSZ JN05
UTC dB Audio Message 031700 -8 623 F4JSZ DD0AM -19 (x5)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.