UR4UVT — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UR4UVT, decoded by SO8OO in southeastern Poland. 269 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-09-15.
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 269 FT8 messages attributed to UR4UVT as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 20 m (49%) and 80 m (1%). Most decodes (85%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.
Overview
Bands
Last attributed message: 2026-09-15 17:05 UTC
Observed FT8 message patterns
- Attributed sample
- 269 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -19 to -6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 78, moderate (-15 to -9 dB) 131, strong (≥ -8 dB) 60.
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 UR4UVT 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 UR4UVT
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
- KO50 · 158 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 658 km (approx.)
- Last such locator decoded
- 2026-09-15 17:04 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 | UR4UVT S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-15 21:34 | 40m | - / - | 4X5JK | -18 / - | 2 | ✓ Closing fragment |
| 09-15 21:23 | 40m | - / -2 | ON6SAT | +2 / - | 2 | ✓ Closing fragment |
| 09-15 21:11 | 40m | - / - | UA4FKT | +3 / - | 3 | Partial capture |
| 09-15 20:56 | 40m | - / +1 | PI4DX | +13 / - | 2 | ✓ Closing fragment |
| 09-15 20:54 | 40m | - / -4 | TA7MMI | -10 / - | 2 | ✓ Closing fragment |
| 09-15 17:04 | 80m | -12 / - | ON3YDM | - / - | 2 | ✓ Closing fragment |
| 09-08 16:21 | 40m | -6 / - | SP100PKP | - / -23 | 3 | Partial capture |
| 08-22 02:03 | 20m | - / -22 | UN2E | -6 / - | 3 | ✓ Closing fragment |
| 08-21 20:37 | 20m | - / -11 | GM4VAC | -11 / - | 3 | ✓ Closing fragment |
| 08-21 20:18 | 20m | - / -8 | 4Z5PT | -10 / - | 2 | ✓ Closing fragment |
| 08-21 20:05 | 20m | - / -5 | 9A2AJ | +15 / - | 2 | ✓ Closing fragment |
| 08-21 19:55 | 20m | - / -6 | 9K2GR | -7 / - | 2 | ✓ Closing fragment |
| 08-21 19:45 | 20m | - / -25 | ON6SAT | +11 / - | 3 | ✓ Closing fragment |
| 08-21 19:15 | 20m | - / - | G3EFG | -2 / - | 2 | Partial capture |
| 08-21 19:10 | 20m | - / +4 | F4GRW | -4 / - | 3 | ✓ Closing fragment |
| 08-21 18:41 | 20m | - / -23 | EB1DJ | -6 / - | 3 | ✓ Closing fragment |
| 08-21 18:16 | 20m | - / - | TA1BX | -12 / - | 2 | ✓ Closing fragment |
| 08-21 18:08 | 20m | - / -13 | SV9ANC | -12 / - | 2 | ✓ Closing fragment |
| 08-21 17:49 | 20m | -6 / - | G1ABR | - / - | 3 | Partial capture |
| 08-21 17:48 | 20m | -8 / - | SP9HAN | - / - | 2 | Partial capture |
| 08-21 17:39 | 20m | -5 / - | IU1FIG | - / -18 | 4 | Partial capture |
| 08-21 17:13 | 20m | - / - | E74MW | +2 / - | 2 | ✓ Closing fragment |
| 08-21 17:04 | 20m | -8 / - | LZ1DB | -8 / - | 3 | ✓ Closing observed |
| 08-21 16:59 | 20m | - / - | SP6AXW | +2 / - | 4 | Partial capture |
| 08-21 16:54 | 20m | -4 / -17 | EA5GXE | -1 / -18 | 12 | ✓ Full exchange observed |
| 08-21 16:51 | 20m | -12 / - | EX7CQ | -20 / - | 3 | ✓ Closing observed |
| 08-21 16:14 | 20m | - / -12 | PD4RJ | -11 / - | 3 | ✓ Closing fragment |
| 08-16 18:52 | 20m | -11 / - | DL70ESSEN | - / -6 | 2 | Partial capture |
| 08-16 18:42 | 20m | - / +5 | OH8JEP | -14 / - | 2 | ✓ Closing fragment |
| 08-16 18:40 | 20m | -4 / - | F4HTA | -10 / -5 | 3 | ✓ Closing observed |
| 08-16 18:18 | 20m | -16 / - | DA0LH | - / - | 2 | Partial capture |
| 08-16 18:11 | 20m | -18 / - | OZ9FF | -14 / -9 | 5 | ✓ Closing observed |
| 08-16 18:08 | 20m | -13 / -22 | 5P5Z | -6 / -5 | 6 | ✓ Full exchange observed |
| 08-16 17:56 | 20m | - / - | UR5EDX | +10 / - | 2 | Partial capture |
| 08-16 17:52 | 20m | - / -2 | PD0MNO | -14 / - | 2 | ✓ Closing fragment |
| 08-16 17:49 | 20m | - / -13 | 5P5Z | +8 / - | 2 | Partial capture |
| 08-16 17:38 | 20m | -8 / - | LX1NO | - / - | 3 | Partial capture |
| 08-16 17:16 | 20m | +2 / -15 | DL6CIB | -6 / -17 | 3 | Partial capture |
| 08-15 19:54 | 20m | - / -23 | ON3NR | +9 / - | 3 | ✓ Closing fragment |
| 08-15 18:45 | 20m | - / -13 | CN8NS | -14 / - | 2 | Partial capture |
| 08-15 16:22 | 20m | - / -10 | M7NXK | -10 / - | 2 | Partial capture |
| 08-13 21:43 | 20m | - / -7 | 4X5JK | -16 / - | 7 | Partial capture |
| 08-13 19:43 | 20m | - / -1 | CT7AUT | -10 / - | 2 | ✓ Closing fragment |
| 08-12 21:33 | 20m | - / -15 | W1AW/1 | +3 / - | 2 | Partial capture |
| 08-12 20:26 | 20m | - / -25 | OZ6P | -5 / - | 2 | ✓ Closing fragment |
| 08-12 20:15 | 20m | - / - | F5IXN | -15 / - | 2 | Partial capture |
| 08-12 19:55 | 20m | - / -18 | CR5VP | -10 / - | 7 | Partial capture |
| 08-12 19:30 | 20m | - / -18 | MD0CCE | -8 / - | 2 | ✓ Closing fragment |
| 08-12 18:36 | 20m | -15 / - | EG5MYC | - / -11 | 6 | ✓ Closing fragment |
| 08-12 18:33 | 20m | -10 / - | OM7AMA | - / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 162115 -8 2238 SP100PKP UR4UVT (x3) 205400 -9 2030 UR4UVT TA7MMI -04 (x2) 205615 +14 2327 UR4UVT PI4DX +01 (x2) 211145 +7 2286 UR4UVT UA4FKT LO23 (x3) 212300 +1 2400 UR4UVT ON6SAT -02 (x2) 213430 -18 2095 UR4UVT 4X5JK RR73 (x2)
UTC dB Audio Message 170400 -9 656 ON3YDM UR4UVT KO50 (x2)
UTC dB Audio Message 194630 +11 390 UR4UVT ON6SAT RR73 195530 -5 2246 UR4UVT 9K2GR -06 (x2) 200330 -9 2873 UR4UVT PD7PIN -14 200500 +15 2755 UR4UVT 9A2AJ -05 (x2) 201845 -12 1022 UR4UVT 4Z5PT -08 (x2) 203715 -11 2246 UR4UVT GM4VAC -11 (x3) 012200 -8 2879 UR4UVT VU2SW -15 020345 -9 2776 UR4UVT UN2E -22 (x3)
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.
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