W4BTJ — 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 W4BTJ, decoded by SO8OO in southeastern Poland. 1 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-26.
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 1 FT8 messages attributed to W4BTJ as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.
Overview
Observed FT8 message patterns
- Attributed sample
- 1 messages
- Active dates
- 1 UTC dates
- S/N summary
- Too few decodes
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with W4BTJ in decoded directed-looking exchanges:
Most frequent locator attributed to W4BTJ
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
- EL96
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,634 km (approx.)
- Last such locator decoded
- 2026-08-26 04:25 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 | W4BTJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-02 01:29 | 40m | - / -11 | LZ1KU | -2 / - | 3 | ✓ Closing fragment |
| 11-02 01:27 | 40m | - / -15 | ON1JP | -19 / - | 3 | Partial capture |
| 10-29 01:48 | 40m | - / -18 | G8KHF | +3 / - | 5 | ✓ Closing fragment |
| 10-12 01:43 | 40m | - / - | SV5BYP | -10 / - | 3 | Partial capture |
| 10-12 01:37 | 40m | - / - | EA4D | -14 / - | 2 | ✓ Closing fragment |
| 09-08 00:28 | 40m | - / -5 | OA4ENG | -21 / - | 2 | ✓ Closing fragment |
| 08-26 04:32 | 20m | - / +4 | 4L7T | -11 / - | 2 | ✓ Closing fragment |
| 08-26 04:25 | 20m | -8 / - | HZ1TT | -8 / - | 3 | ✓ Closing observed |
| 08-26 02:49 | 20m | - / -8 | JY5IB | -2 / - | 2 | ✓ Closing fragment |
| 08-15 01:08 | 20m | - / -6 | 5B4AMX | -14 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 014315 -11 796 W4BTJ SV5BYP KM46 (x3) 014800 +8 707 W4BTJ G8KHF -18 (x5) 012700 -20 1643 W4BTJ ON1JP -15 (x2) 012900 -3 1516 W4BTJ LZ1KU -11 012930 -16 1643 W4BTJ ON1JP -15 012930 -2 1516 W4BTJ LZ1KU -11 (x2) 021130 -20 1206 W4BTJ IZ5IOT -17
UTC dB Audio Message 010800 -17 1778 W4BTJ 5B4AMX -06 (x2) 024900 -4 1389 W4BTJ JY5IB R-08 (x2) 042545 -8 322 HZ1TT W4BTJ EL96 042630 -10 1757 W4BTJ HZ1TT RR73 (x2) 043230 -12 406 W4BTJ 4L7T +04 (x2) 011930 -24 1578 W4BTJ 7Z1CZ -19
CW
No CW receptions recorded for this callsign in the last 30 days.
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