IZ4SJI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IZ4SJI, decoded by SO8OO in southeastern Poland. 199 related FT8 messages, 75 CQ messages, observed on 40m, 20m, 10m, across 19 UTC dates. Heard between 2026-06-02 and 2026-08-01.
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 IZ4SJI worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by IZ4SJI
Approximate centre of JN64, decoded 2026-08-01 07:24 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 | IZ4SJI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-01 07:25 | 20m | -10 / - | DL1THB | - / -20 | 2 | Partial capture |
| 07-28 14:40 | 20m | - / -9 | MW7RHR | -11 / - | 2 | Partial capture |
| 07-28 09:43 | 20m | - / - | F5RRS | -9 / - | 3 | Partial capture |
| 07-28 09:41 | 20m | - / +1 | F4BJN | -19 / - | 2 | Partial capture |
| 07-28 09:35 | 20m | - / -4 | GJ0KYZ | -4 / - | 3 | ✓ Closing fragment |
| 07-27 08:21 | 10m | - / -4 | PD0HLA | 0 / - | 5 | Partial capture |
| 07-25 07:50 | 10m | -11 / - | PD1HPB | -6 / - | 3 | ✓ Closing observed |
| 07-25 07:21 | 10m | - / - | PD1ADA | -17 / - | 6 | Partial capture |
| 07-24 14:23 | 10m | - / - | DO6KDS | -14 / - | 2 | Partial capture |
| 07-23 08:57 | 10m | - / - | LZ3CB | -3 / - | 3 | Partial capture |
| 07-23 07:34 | 10m | -9 / - | UA9MA | -12 / - | 2 | ✓ Closing observed |
| 07-23 07:29 | 10m | - / - | F4BJN | -11 / - | 2 | Partial capture |
| 07-23 07:27 | 10m | -11 / -22 | YL3GAO | +5 / - | 4 | ✓ Closing observed |
| 07-22 16:17 | 10m | -10 / - | 2E0MBH | - / -11 | 3 | Partial capture |
| 07-20 15:42 | 20m | - / - | G0ANH | -2 / - | 2 | Partial capture |
| 07-19 09:51 | 20m | - / -13 | PE1MHY | -22 / - | 2 | Partial capture |
| 07-19 09:48 | 20m | - / +5 | F1PSX | -1 / - | 3 | ✓ Closing fragment |
| 07-19 09:42 | 20m | - / +7 | F4AWT | -6 / - | 2 | Partial capture |
| 07-19 08:59 | 10m | -9 / - | EB3FRN | - / -5 | 2 | ✓ Closing fragment |
| 07-19 08:50 | 10m | -7 / - | RW9AD | - / -19 | 3 | Partial capture |
| 07-18 09:03 | 10m | -6 / - | UX7QV | - / -9 | 2 | ✓ Closing fragment |
| 07-18 08:58 | 10m | -4 / - | EB5ISR | - / -10 | 2 | ✓ Closing fragment |
| 07-18 08:54 | 10m | -7 / - | UX2SB | - / +4 | 2 | ✓ Closing fragment |
| 07-18 08:52 | 10m | -10 / - | PD2BS | - / 0 | 2 | ✓ Closing fragment |
| 07-18 08:47 | 10m | -11 / - | R4FDD | - / -17 | 4 | Partial capture |
| 07-17 07:48 | 20m | - / - | DK3TNA | -16 / - | 3 | Partial capture |
| 07-17 07:34 | 20m | - / -5 | PD4RFS | -10 / - | 2 | Partial capture |
| 07-17 07:32 | 20m | - / -20 | YO9PH | -4 / - | 2 | Partial capture |
| 07-17 07:28 | 20m | -12 / - | ON3JDK | - / -19 | 2 | Partial capture |
| 07-17 07:23 | 20m | - / +4 | E70SZ | -4 / - | 3 | ✓ Closing fragment |
| 07-17 07:18 | 20m | - / -13 | YO9PH | -7 / - | 2 | Partial capture |
| 07-16 16:56 | 40m | -12 / - | SP5GEO | -12 / - | 2 | ✓ Closing observed |
| 07-16 16:50 | 40m | - / -7 | UX7QV | -12 / - | 2 | ✓ Closing fragment |
| 07-16 16:07 | 40m | - / 0 | DL6CGN | -6 / - | 2 | Partial capture |
| 07-14 15:11 | 20m | - / -6 | DK7ZT | -15 / - | 5 | Partial capture |
| 06-15 08:42 | 20m | -10 / - | EA4RKC | - / -16 | 3 | Partial capture |
| 06-15 08:38 | 20m | -7 / +3 | 9A4ZM | +1 / -3 | 5 | ✓ Full exchange observed |
| 06-15 08:36 | 20m | -12 / +4 | OK1DBE | +6 / -16 | 4 | ✓ Full exchange observed |
| 06-15 07:56 | 10m | - / - | F5MYK | -15 / - | 2 | Partial capture |
| 06-14 07:58 | 40m | - / - | HA8BMP | -15 / - | 2 | Partial capture |
| 06-14 07:55 | 40m | - / - | F4LVF | -15 / - | 3 | Partial capture |
| 06-14 07:49 | 20m | - / - | PD1HPB | -8 / - | 2 | Partial capture |
| 06-14 07:39 | 20m | - / -10 | F1ODM | +2 / - | 2 | ✓ Closing fragment |
| 06-13 15:41 | 10m | - / -12 | 5Z4VJ | -2 / - | 2 | ✓ Closing fragment |
| 06-13 07:22 | 10m | -7 / - | PA3EVY | -10 / -16 | 2 | ✓ Closing observed |
| 06-13 07:01 | 10m | -18 / +7 | DN9AST | -15 / +3 | 4 | Partial capture |
| 06-13 06:57 | 10m | -12 / -11 | UR5EPZ | +5 / -12 | 6 | ✓ Full exchange observed |
| 06-06 15:34 | 20m | - / -16 | R1BED | -8 / - | 3 | ✓ Closing fragment |
| 06-06 15:29 | 20m | - / -6 | R5AV | +8 / - | 2 | ✓ Closing fragment |
| 06-02 08:59 | 10m | -12 / - | ON4UR | - / -11 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 093545 -3 889 IZ4SJI GJ0KYZ -04 093545 -1 637 IZ4SJI R5AV RR73 093615 -4 889 IZ4SJI GJ0KYZ -04 (x2) 094115 -20 1909 IZ4SJI F4BJN R+01 (x2) 094345 -8 1943 IZ4SJI F5RRS JN36 (x3) 144045 -11 990 IZ4SJI MW7RHR -09 (x2) 072245 -18 1818 IZ4SJI ON1JP -07 072430 -10 633 CQ IZ4SJI JN64 072530 -11 633 DL1THB IZ4SJI -20 (x2)
UTC dB Audio Message 075145 -5 588 IZ4SJI PD1HPB 73 075300 -11 587 CQ IZ4SJI JN64 075315 -15 2280 IZ4SJI PE1NPS JO22 075400 -11 587 CQ IZ4SJI JN64 075430 -11 586 M0IOY IZ4SJI +03 082100 +4 2744 IZ4SJI PD0HLA -04 (x5) 083415 -8 587 PA3GMD IZ4SJI RR73 083915 -11 587 CQ IZ4SJI JN64 084215 -11 587 PH9OY IZ4SJI +00 084915 -8 587 DL3MIB IZ4SJI -17 085300 -21 1343 IZ4SJI PD2WL JO22
UTC dB Audio Message 075645 -13 1245 IZ4SJI F4LVF JO20 075830 -13 557 CQ IZ4SJI JN64 ? a1 075845 -16 1631 IZ4SJI HA8BMP JN96 (x2) 082530 -7 556 <...> IZ4SJI JN64 160300 -9 555 IZ4SJI DL6CGN JO51 (x3) 165030 -12 556 IZ4SJI UX7QV R-07 (x2) 165430 -7 2438 IZ4SJI IQ4JO JN63 165645 -12 556 SP5GEO IZ4SJI RR73 165700 -12 555 IZ4SJI SP5GEO 73 170045 -11 556 CQ IZ4SJI JN64 a1 155645 -11 2681 IZ4SJI IQ4JO JN63
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.