SV8/UR4LBR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SV8/UR4LBR, decoded by SO8OO in southeastern Poland. 167 FT8 messages attributed to this token as transmitter, on 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-29 and 2026-08-09.
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 167 FT8 messages attributed to SV8/UR4LBR as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (69%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 167 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -20 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 66, moderate (-15 to -9 dB) 80, strong (≥ -8 dB) 21.
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 SV8/UR4LBR 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 SV8/UR4LBR
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
- KM37 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,444 km (approx.)
- Last such locator decoded
- 2026-07-03 16:24 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 | SV8/UR4LBR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-11 03:33 | 20m | - / - | <...> | -6 / - | 8 | ✓ Closing fragment |
| 08-08 14:46 | 20m | - / - | <...> | +7 / - | 3 | ✓ Closing fragment |
| 08-08 14:43 | 20m | - / - | DL5KMR | -19 / - | 3 | Partial capture |
| 07-08 01:16 | 20m | - / - | <...> | 0 / - | 2 | ✓ Closing fragment |
| 07-08 00:59 | 20m | - / - | <...> | -17 / - | 6 | ✓ Closing fragment |
| 07-07 17:03 | 20m | - / - | <...> | -9 / - | 2 | ✓ Closing fragment |
| 07-03 16:19 | 20m | - / - | R9FDE | -16 / - | 2 | Partial capture |
| 07-03 16:13 | 20m | -10 / - | DF8TN | - / -7 | 3 | Partial capture |
| 07-03 16:11 | 20m | -16 / - | EA2BHE | - / -7 | 3 | ✓ Closing fragment |
| 07-03 16:09 | 20m | -13 / - | JH8SYG | - / -10 | 2 | Partial capture |
| 07-03 16:08 | 20m | -14 / - | EA2BHE | - / -6 | 2 | Partial capture |
| 06-30 17:02 | 20m | - / - | DF8TN | -10 / - | 5 | Partial capture |
| 06-30 05:36 | 20m | -8 / - | HA5AGP | - / -6 | 2 | ✓ Closing fragment |
| 06-30 05:27 | 20m | - / - | <...> | -4 / - | 10 | ✓ Closing fragment |
| 06-30 05:21 | 20m | -10 / - | UX7QV | - / -6 | 2 | ✓ Closing fragment |
| 06-30 05:19 | 20m | -13 / - | K4GSR | - / -5 | 2 | ✓ Closing fragment |
| 06-30 05:13 | 20m | - / - | <...> | -8 / - | 3 | ✓ Closing fragment |
| 06-30 04:56 | 20m | -9 / -19 | F4LNM | -3 / -8 | 8 | ✓ Full exchange observed |
| 06-29 14:56 | 20m | -14 / -7 | DL8WEM | -17 / -12 | 9 | ✓ Full exchange observed |
| 06-29 14:48 | 20m | -11 / - | UR5WCS | - / -5 | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 122700 -16 1087 CQ SV8/UR4LBR 044915 -8 1354 SV8/UR4LBR <...> RR73 (x4) 200815 +2 1777 SV8/UR4LBR DL1NEO JN59 033345 -9 2418 SV8/UR4LBR <...> 73 (x9)
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee