S57BTI — 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 S57BTI, decoded by SO8OO in southeastern Poland. 2,182 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-05.
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 2,182 FT8 messages attributed to S57BTI as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (53%), followed by 80 m (17%) and 20 m (13%). Most decodes (67%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +1 dB.
Overview
Bands
Last attributed message: 2026-11-05 19:11 UTC
Observed FT8 message patterns
- Attributed sample
- 2,182 messages
- Active dates
- 63 UTC dates
- Estimated median S/N
- +1 dB
- Estimated 10th-90th percentile
- -11 to +12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 67, moderate (-15 to -9 dB) 303, strong (≥ -8 dB) 1,812.
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 S57BTI 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 S57BTI
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
- JN75 · 1,305 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 708 km (approx.)
- Last such locator decoded
- 2026-11-05 19:11 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 | S57BTI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 19:10 | 40m | -4 / - | BG7BVP | - / - | 2 | Partial capture |
| 11-05 19:09 | 40m | -5 / - | F4JHO | - / - | 2 | Partial capture |
| 11-05 19:08 | 40m | -7 / - | EA7GNO | - / -19 | 3 | ✓ Closing fragment |
| 11-05 19:06 | 40m | -2 / - | YO4LUP | - / - | 2 | Partial capture |
| 11-05 19:01 | 40m | -4 / - | UA1WFH | - / - | 2 | ✓ Closing fragment |
| 11-05 17:49 | 40m | -7 / - | TA1YT | - / -16 | 3 | Partial capture |
| 11-05 17:48 | 40m | -2 / - | R4PFY | - / -8 | 2 | ✓ Closing fragment |
| 11-05 17:47 | 40m | -6 / - | RC1C | -12 / -1 | 4 | ✓ Closing observed |
| 11-05 17:46 | 40m | -8 / - | DL5AOL | - / -7 | 2 | ✓ Closing fragment |
| 11-05 17:45 | 40m | +4 / -2 | IZ0RPS | 0 / -3 | 5 | ✓ Full exchange observed |
| 11-05 17:40 | 40m | -4 / - | SM3JBO | - / - | 2 | Partial capture |
| 11-05 17:37 | 40m | -4 / - | ON4MDW | - / -13 | 3 | ✓ Closing fragment |
| 11-05 17:35 | 40m | 0 / +3 | DK1HSI | -12 / -14 | 4 | ✓ Full exchange observed |
| 11-05 17:34 | 40m | -2 / - | UA4AOC | - / -17 | 3 | ✓ Closing fragment |
| 11-05 17:31 | 40m | -4 / - | M7XOM | 0 / +2 | 4 | ✓ Closing observed |
| 11-05 17:30 | 40m | -4 / - | LY4AB | - / -11 | 3 | ✓ Closing fragment |
| 11-05 17:28 | 40m | -5 / - | PD4SN | -13 / -13 | 4 | ✓ Full exchange observed |
| 11-04 20:33 | 80m | +7 / - | TJ1GD | - / - | 2 | Partial capture |
| 11-04 20:26 | 80m | +7 / -10 | TA7MMI | +10 / -6 | 3 | Partial capture |
| 11-04 20:12 | 80m | +2 / - | YO9CEB | -9 / -10 | 5 | ✓ Closing observed |
| 11-04 20:07 | 80m | +4 / - | EX7DY | - / - | 4 | Partial capture |
| 11-04 20:02 | 80m | +6 / - | D2UY | - / - | 2 | Partial capture |
| 11-04 19:59 | 80m | +3 / - | D2UY | - / - | 2 | Partial capture |
| 11-04 19:54 | 80m | +10 / - | IU8UHK | - / -10 | 3 | ✓ Closing fragment |
| 11-04 19:52 | 80m | +12 / - | IC8JRA | - / -14 | 3 | ✓ Closing fragment |
| 11-04 19:45 | 80m | +6 / - | ON5MX | - / - | 2 | ✓ Closing fragment |
| 11-04 19:43 | 80m | +2 / - | 6W/IK2HKT | - / -6 | 2 | Partial capture |
| 11-04 19:39 | 80m | +3 / - | EX7DY | - / - | 3 | Partial capture |
| 11-04 19:36 | 80m | +4 / -6 | SP7ROH | +6 / +1 | 5 | ✓ Full exchange observed |
| 11-04 19:34 | 80m | +8 / - | PE40EUDXF | - / +1 | 2 | Partial capture |
| 11-04 19:31 | 80m | 0 / - | HB9CZE | - / -20 | 4 | ✓ Closing fragment |
| 11-04 17:52 | 80m | +2 / - | EX7DY | - / - | 2 | Partial capture |
| 11-04 17:48 | 80m | +1 / - | SP9DWT | -7 / +2 | 4 | ✓ Full exchange observed |
| 11-04 17:46 | 80m | 0 / - | IK3/UY7LA | - / -15 | 4 | Partial capture |
| 11-04 17:44 | 80m | +3 / - | GB1RBL | - / - | 2 | Partial capture |
| 11-04 17:42 | 80m | 0 / - | OD5ZZ | - / - | 2 | Partial capture |
| 11-04 17:40 | 80m | +3 / - | F5OYA/P | - / +1 | 2 | Partial capture |
| 11-04 17:39 | 80m | +4 / - | UT5ED | - / - | 2 | Partial capture |
| 11-04 17:35 | 80m | +3 / - | RD9T | - / - | 3 | Partial capture |
| 11-04 17:30 | 80m | -2 / - | EX7DY | - / - | 8 | Partial capture |
| 11-02 16:54 | 60m | -8 / - | YO5QDN | - / - | 2 | Partial capture |
| 11-02 16:50 | 60m | -7 / - | SP8BG | - / -20 | 5 | Partial capture |
| 11-02 16:45 | 60m | -2 / - | SM7MDI | - / -16 | 3 | ✓ Closing fragment |
| 11-02 16:24 | 60m | -7 / - | 4X4DK | - / - | 3 | Partial capture |
| 11-02 16:12 | 60m | 0 / - | HA5UK | +1 / +2 | 5 | ✓ Full exchange observed |
| 11-02 16:10 | 60m | -5 / -12 | R3DQT | -11 / -9 | 6 | ✓ Full exchange observed |
| 11-02 15:56 | 60m | -11 / - | OE6HWF | -6 / 0 | 4 | ✓ Full exchange observed |
| 11-02 15:51 | 60m | -13 / - | S57MPU | +9 / +1 | 6 | ✓ Full exchange observed |
| 11-02 15:44 | 60m | -10 / - | HB9RJD | -16 / -1 | 5 | ✓ Full exchange observed |
| 11-02 15:42 | 60m | -12 / - | LA9GX | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175045 -11 656 TA1YT S57BTI R-16 (x2) 190145 -8 1340 UA1WFH S57BTI JN75 (x2) 190345 -1 1340 TA1MB S57BTI -16 190600 -3 1340 YO4LUP S57BTI JN75 (x2) 190700 -3 1340 S50B S57BTI JN75 190800 -7 1340 EA7GNO S57BTI JN75 (x3) 190930 -3 1340 F4JHO S57BTI JN75 (x2) 191030 -7 1340 BG7BVP S57BTI JN75 (x2)
UTC dB Audio Message 200815 +6 619 EX7DY S57BTI JN75 (x3) 201200 +3 619 YO9CEB S57BTI JN75 (x3) 201315 -9 1147 S57BTI YO9CEB RR73 201330 +3 619 YO9CEB S57BTI 73 202615 +6 619 TA7MMI S57BTI JN75 202645 +8 619 RD0L S57BTI JN75 202730 +10 1993 S57BTI TA7MMI -10 202815 +8 619 TA7MMI S57BTI R-06 203300 +12 619 D2UY S57BTI JN75 203345 +11 619 TJ1GD S57BTI JN75 (x2)
UTC dB Audio Message 162500 -4 1196 4X4DK S57BTI JN75 (x2) 164330 -17 1196 S57BTI F1SES RR73 164530 -2 1195 SM7MDI S57BTI JN75 (x3) 164800 -3 1195 SP8BG S57BTI JN75 (x6) 165415 -8 1196 YO5QDN S57BTI JN75 (x2) 165515 -7 1195 OK1MAT S57BTI JN75
UTC dB Audio Message 214715 +9 504 S57BTI SM4IED RR73 214730 +0 2831 SM4IED S57BTI 73 214800 -4 2831 UN0GY S57BTI JN75 (x2) 214930 -11 607 S57BTI IU0NAD JN62 214945 -11 2831 IU0NAD S57BTI +00 215000 -8 607 S57BTI IU0NAD R-18 215015 -13 2831 IU0NAD S57BTI RR73 215030 -9 607 S57BTI IU0NAD 73 215045 -13 2831 NM6V S57BTI JN75 215900 -2 2831 OH0Z S57BTI JN75 215930 -1 2831 UN0GY S57BTI JN75 220045 -9 2831 EA8BS S57BTI JN75 220130 -3 2831 TA3NP S57BTI JN75 (x2)
UTC dB Audio Message 125845 +1 2776 S57BTI M0SSV RR73 132545 -4 866 S57BTI F4NKF 73 133130 -8 335 S57BTI EX7DY -20 (x2) 140345 -15 2166 S57BTI UT2UCI RR73 150130 -6 823 S57BTI MW7MCX -14 153145 +4 497 S57BTI YO3GNU -15 (x2) 200630 +9 1026 S57BTI YT7TZ +01 (x2) 201615 -13 866 UA4FQO S57BTI R-12 202400 -13 1161 K4YT S57BTI JN75 (x2) 202700 -13 1161 K1VVM S57BTI RR73 203030 -8 1160 WV5A S57BTI JN75
UTC dB Audio Message 132045 -10 610 E75W S57BTI JN75 132145 -8 610 ER3CT S57BTI JN75
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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee