F5SJC — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving F5SJC, decoded by SO8OO in southeastern Poland. 3,468 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 78 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-22.
These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.
SO8OO decoded 3,468 FT8 messages attributed to F5SJC as the transmitting token by decoded message structure across 78 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 20 m (31%) and 10 m (2%). Most decodes (56%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-10-22 09:13 UTC
Observed FT8 message patterns
- Attributed sample
- 3,468 messages
- Active dates
- 78 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -15 to +4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 324, moderate (-15 to -9 dB) 832, strong (≥ -8 dB) 2,312.
WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with F5SJC in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to F5SJC
The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.
- Attributed locator
- JN05 · 1,629 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,626 km (approx.)
- Last such locator decoded
- 2026-10-22 08:45 UTC
A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.
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 | F5SJC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 09:20 | 40m | - / -21 | OK8UQ | -8 / - | 2 | ✓ Closing fragment |
| 10-22 09:11 | 40m | -24 / -4 | DH9DR | -8 / - | 3 | ✓ Closing observed |
| 10-22 08:55 | 40m | - / - | DD1HRB | -10 / - | 2 | ✓ Closing fragment |
| 10-22 08:44 | 40m | -19 / -16 | DG3YEV | -6 / - | 4 | ✓ Closing observed |
| 10-22 08:37 | 40m | -13 / -10 | DL1NB | -14 / +8 | 3 | ✓ Full exchange observed |
| 10-22 08:29 | 40m | - / -2 | G0HSP | -15 / - | 2 | ✓ Closing fragment |
| 10-22 08:26 | 40m | - / -6 | M0OXO | -12 / - | 2 | ✓ Closing fragment |
| 10-22 08:25 | 40m | -14 / - | PD1UM | - / +5 | 2 | ✓ Closing fragment |
| 10-22 08:21 | 40m | - / +1 | DD0IPA | -18 / - | 2 | ✓ Closing fragment |
| 10-22 08:17 | 40m | -15 / - | EA1Y | - / - | 3 | ✓ Closing fragment |
| 10-22 08:15 | 40m | -14 / - | DL9AHB/QRP | - / -10 | 2 | Partial capture |
| 10-22 08:12 | 40m | -19 / - | EA8AE | - / -4 | 3 | ✓ Closing fragment |
| 10-22 08:10 | 40m | -14 / - | M9UTD | - / - | 4 | ✓ Closing fragment |
| 10-21 21:32 | 40m | -16 / - | 9A2G | - / -12 | 3 | ✓ Closing fragment |
| 10-21 21:16 | 40m | -10 / - | US5ZFT | - / - | 2 | ✓ Closing fragment |
| 10-21 21:14 | 40m | -14 / +7 | IZ8XXE | -8 / +2 | 4 | ✓ Full exchange observed |
| 10-21 21:11 | 40m | -9 / -8 | IT9GPQ | -22 / +4 | 4 | ✓ Full exchange observed |
| 10-21 21:08 | 40m | -14 / - | IT9ACJ/QRP | - / - | 3 | Partial capture |
| 10-21 21:04 | 40m | -8 / - | SP6AB | - / +4 | 3 | ✓ Closing fragment |
| 10-21 05:01 | 40m | -8 / - | OH1LEG | - / +10 | 3 | ✓ Closing fragment |
| 10-21 04:55 | 40m | -8 / -13 | IU5RPJ | -6 / -8 | 5 | ✓ Full exchange observed |
| 10-21 04:52 | 40m | +2 / - | EA7R | - / +6 | 3 | ✓ Closing fragment |
| 10-21 04:36 | 40m | -15 / +9 | IS0AWZ | -13 / - | 5 | ✓ Full exchange observed |
| 10-21 04:34 | 40m | -9 / -3 | CT7BRV | -6 / - | 5 | ✓ Full exchange observed |
| 10-21 04:16 | 40m | +5 / - | OM8GT | - / -5 | 3 | ✓ Closing fragment |
| 10-21 04:15 | 40m | -14 / - | YV6BXN | - / - | 2 | Partial capture |
| 10-21 04:04 | 40m | -2 / - | OK2FD | - / -11 | 6 | ✓ Closing fragment |
| 10-21 03:57 | 40m | -2 / - | WA2HMM | - / -14 | 4 | ✓ Closing fragment |
| 10-21 03:53 | 40m | -7 / - | HI8WJI | - / -13 | 3 | Partial capture |
| 10-21 03:50 | 40m | -2 / -12 | RA7A | +16 / - | 5 | ✓ Full exchange observed |
| 10-21 03:47 | 40m | 0 / - | SP5DUJ | - / -13 | 3 | Partial capture |
| 10-21 03:44 | 40m | -3 / -14 | R1BMY | -20 / +3 | 4 | ✓ Full exchange observed |
| 10-21 03:42 | 40m | +1 / - | KA8KCH | - / -3 | 3 | ✓ Closing fragment |
| 10-21 03:40 | 40m | -2 / - | W5WLG | - / -15 | 2 | ✓ Closing fragment |
| 10-21 03:38 | 40m | 0 / - | W7GVR | - / -8 | 2 | ✓ Closing fragment |
| 10-21 03:25 | 40m | -4 / - | SQ7NHR | - / -13 | 3 | ✓ Closing fragment |
| 10-21 03:23 | 40m | -10 / - | VE3ARF | - / - | 2 | Partial capture |
| 10-21 03:20 | 40m | -5 / - | HA5IZ | - / 0 | 3 | ✓ Closing fragment |
| 10-21 03:17 | 40m | 0 / - | UY0HY | - / -14 | 3 | ✓ Closing fragment |
| 10-21 03:14 | 40m | -3 / -9 | P4/WE9V | +8 / - | 3 | Partial capture |
| 10-21 03:10 | 40m | -2 / - | UA5D | - / -2 | 3 | ✓ Closing fragment |
| 10-21 03:08 | 40m | +1 / - | Z34K | - / -2 | 3 | ✓ Closing fragment |
| 10-21 03:06 | 40m | -5 / -9 | UA4CCH | -11 / -2 | 6 | ✓ Full exchange observed |
| 10-21 03:05 | 40m | -6 / - | UT5ZC | - / - | 2 | Partial capture |
| 10-21 03:03 | 40m | -1 / - | RT8T | - / -8 | 3 | ✓ Closing fragment |
| 10-21 02:59 | 40m | -7 / - | WZ4K | - / -3 | 4 | ✓ Closing fragment |
| 10-19 21:24 | 40m | -9 / 0 | DK4ET | -10 / - | 4 | ✓ Closing observed |
| 10-19 21:24 | 40m | -12 / - | BA4IE | - / -12 | 2 | Partial capture |
| 10-19 21:19 | 40m | -15 / - | RW3DDZ | - / -5 | 4 | ✓ Closing fragment |
| 10-19 21:18 | 40m | -14 / -11 | F4MXQ | -7 / - | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 083715 -13 979 DL1NB F5SJC R+08 083730 -12 979 F5SJC DL1NB RR73 084415 -21 1430 CS7BMX F5SJC 73 084445 -19 1477 DG3YEV F5SJC JN05 (x2) 084530 -2 1488 F5SJC DG3YEV -16 (x2) 085515 -11 1264 F5SJC DD1HRB +23 (x2) 091115 -6 1956 F5SJC DH9DR -04 (x2) 091200 -24 1955 DH9DR F5SJC 73 091300 -21 1702 DA2SE F5SJC R-13 092015 -9 1062 F5SJC OK8UQ -21 (x2)
UTC dB Audio Message 194500 -3 1855 F5SJC DK2KGB -18 (x9)
UTC dB Audio Message 163700 +2 558 CQ F5SJC JN05 163830 +6 558 HF5A F5SJC 73 164130 +7 556 CQ F5SJC JN05 (x5) 164430 -4 557 WV2B F5SJC -17 (x2) 164600 -1 558 CQ F5SJC JN05 (x5) 184200 -19 2280 SH7DEK F5SJC R+01
UTC dB Audio Message 091645 -8 605 DH6DAO F5SJC R+19 091745 -13 605 SP4TZ F5SJC JN05 (x3) 093945 -9 398 OE5WRO F5SJC R+07 (x2) 100745 -15 1270 DM2DXA F5SJC JN05 (x2) 101315 -19 1270 SQ5WBW F5SJC -21 101345 -20 1270 OE5HHR F5SJC R+23 (x2) 112100 -21 1480 PD0MNF F5SJC R-09 (x2) 094415 -6 2326 F5SJC <...> -20 (x2)
Decoder S/N history by band
Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.
CW
No CW receptions recorded for this callsign in the last 30 days.
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