UR4UM — 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 UR4UM, decoded by SO8OO in southeastern Poland. 545 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-04.
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 545 FT8 messages attributed to UR4UM as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (48%), followed by 40 m (34%) and 20 m (12%). Several six-hour UTC windows tied for the largest share (50%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-11-04 05:43 UTC
Observed FT8 message patterns
- Attributed sample
- 545 messages
- Active dates
- 42 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -20 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 145, moderate (-15 to -9 dB) 186, strong (≥ -8 dB) 214.
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 UR4UM 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 UR4UM
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 · 154 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 658 km (approx.)
- Last such locator decoded
- 2026-11-03 05:38 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 | UR4UM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-04 05:42 | 40m | -18 / - | OH3DJP | - / -21 | 2 | Partial capture |
| 11-04 05:19 | 40m | -18 / - | TC5ATA | - / -6 | 4 | Partial capture |
| 11-03 05:58 | 40m | -9 / - | 3A2LF | - / -9 | 3 | ✓ Closing fragment |
| 11-03 05:55 | 40m | -11 / - | DK5EO | -20 / -15 | 7 | Partial capture |
| 11-03 05:50 | 40m | -9 / -10 | GU4WRP | -11 / -13 | 8 | ✓ Full exchange observed |
| 11-03 05:49 | 40m | -8 / -10 | F1UNR | -10 / -18 | 4 | ✓ Full exchange observed |
| 11-03 05:48 | 40m | - / +7 | PF40EUDXF | +8 / - | 2 | Partial capture |
| 11-03 05:48 | 40m | -6 / - | UT/WE9G | - / -5 | 2 | Partial capture |
| 11-03 05:46 | 40m | -8 / -1 | YO2CR | +3 / -9 | 4 | ✓ Full exchange observed |
| 11-03 05:45 | 40m | -15 / -7 | MI7XHT | -11 / -12 | 2 | Partial capture |
| 11-03 05:41 | 40m | -14 / - | 3A2LF | - / -9 | 3 | Partial capture |
| 11-03 05:39 | 40m | -13 / -9 | G0CUT | -12 / -14 | 5 | ✓ Full exchange observed |
| 11-03 05:33 | 80m | - / - | SM5WXF | -8 / - | 2 | Partial capture |
| 11-03 05:28 | 80m | -12 / - | SP8WB | - / -9 | 2 | ✓ Closing fragment |
| 11-03 05:26 | 80m | -6 / -4 | LY7M | +11 / -14 | 4 | ✓ Full exchange observed |
| 11-01 06:32 | 40m | -14 / -3 | UR5ZHJ | -8 / +8 | 3 | ✓ Full exchange observed |
| 11-01 06:28 | 40m | -10 / - | TB2ATH | - / +3 | 2 | ✓ Closing fragment |
| 11-01 06:24 | 40m | -6 / - | SP5MIG | - / -2 | 3 | ✓ Closing fragment |
| 11-01 06:24 | 40m | -9 / -1 | YL2TM | -4 / -8 | 5 | ✓ Full exchange observed |
| 11-01 06:15 | 40m | -13 / - | SQ2RO | - / -11 | 2 | ✓ Closing fragment |
| 11-01 06:12 | 40m | -10 / - | TC0TR | - / -10 | 2 | Partial capture |
| 11-01 06:11 | 40m | -9 / -3 | IU3MAG | +2 / - | 2 | ✓ Closing observed |
| 11-01 06:09 | 40m | -10 / -8 | ON1DGN | -12 / -17 | 3 | ✓ Full exchange observed |
| 11-01 06:02 | 40m | -14 / -9 | TC2TR | -19 / - | 2 | ✓ Closing observed |
| 11-01 05:59 | 80m | -14 / -11 | OM2IB | +14 / +5 | 4 | ✓ Full exchange observed |
| 11-01 05:47 | 80m | - / -19 | SQ9EJ | +2 / - | 4 | ✓ Closing fragment |
| 11-01 05:46 | 80m | - / -14 | SQ2RAD | -16 / - | 2 | ✓ Closing fragment |
| 11-01 05:40 | 80m | -9 / -11 | SP5KG | +3 / - | 4 | ✓ Closing observed |
| 11-01 05:38 | 80m | -9 / -18 | YO5PHQ | +6 / +4 | 4 | ✓ Full exchange observed |
| 10-30 04:07 | 40m | - / -7 | DH3KR | -6 / - | 3 | ✓ Closing fragment |
| 10-28 06:10 | 40m | -12 / -19 | OK2UPY/P | +8 / +3 | 5 | Partial capture |
| 10-28 06:08 | 40m | -14 / - | TC2TR | - / -4 | 3 | Partial capture |
| 10-28 06:06 | 40m | -9 / - | HF50HSP | - / -6 | 2 | Partial capture |
| 10-28 06:00 | 40m | -12 / - | UY3LV | - / +4 | 2 | ✓ Closing fragment |
| 10-28 05:58 | 40m | -6 / - | TC4TR | - / -3 | 3 | ✓ Closing fragment |
| 10-28 05:53 | 80m | -22 / - | HF50HSP | - / -11 | 2 | Partial capture |
| 10-27 22:25 | 80m | -6 / - | DL5YAS | - / -3 | 2 | Partial capture |
| 10-27 22:23 | 80m | -6 / - | ON3BEN | - / -9 | 4 | Partial capture |
| 10-27 22:21 | 80m | -3 / -7 | US5WFL | -10 / - | 3 | ✓ Closing observed |
| 10-27 22:20 | 80m | -8 / -5 | DF2OO | +8 / - | 3 | ✓ Closing observed |
| 10-27 22:16 | 80m | -20 / -15 | HF50HSP | -6 / - | 4 | ✓ Closing observed |
| 10-27 22:15 | 80m | -16 / -15 | DO5PY | +2 / - | 8 | ✓ Closing observed |
| 10-27 22:13 | 80m | - / -2 | UR5SD | +20 / - | 3 | ✓ Closing fragment |
| 10-27 22:08 | 80m | 0 / -7 | DL6RU | +6 / -7 | 8 | ✓ Full exchange observed |
| 10-27 22:06 | 80m | 0 / -13 | DO5PY | -2 / -9 | 4 | ✓ Full exchange observed |
| 10-27 05:16 | 80m | -18 / - | OE3KNS | - / -16 | 2 | ✓ Closing fragment |
| 10-27 05:09 | 80m | - / -18 | S51SLO | -5 / - | 2 | ✓ Closing fragment |
| 10-27 04:55 | 40m | - / -5 | YO4GIY | -3 / - | 2 | ✓ Closing fragment |
| 10-27 04:36 | 40m | - / +4 | SV7BAY | -2 / - | 2 | ✓ Closing fragment |
| 10-24 16:18 | 80m | -8 / - | BH4BNQ | - / -11 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 151115 -8 1706 <...> UR4UM -14 (x2) 151230 -9 1707 YG2ACZ UR4UM RR73 (x2) 151445 -7 2050 <...> UR4UM -16 (x7) 123000 -15 1054 UR4UM A71QQ R-09 (x2) 095200 -11 2652 UR4UM UN6LN RR73 125330 -22 1946 UR4UM TN8GD R-21
UTC dB Audio Message 055545 -9 2451 DK5EO UR4UM -15 055600 -24 2447 UR4UM DK5EO JO31 055615 -12 2451 DK5EO UR4UM -15 (x4) 055815 -10 2451 3A2LF UR4UM -09 (x3) 051915 -19 1998 TC5ATA UR4UM -06 (x4) 054245 -19 1573 OH3DJP UR4UM -21 (x2)
UTC dB Audio Message 060015 +12 1384 UR4UM OM2IB 73 060030 -11 1633 DJ6OI UR4UM -05 052415 -20 1378 UA9XL/P UR4UM -14 052545 -15 1377 CQ UR4UM KO50 (x2) 052645 +11 1715 UR4UM LY7M -04 052700 -5 1377 LY7M UR4UM R-14 052715 +11 1715 UR4UM LY7M RR73 052730 -6 1377 LY7M UR4UM 73 052800 -11 1376 SP8WB UR4UM -09 (x2) 052930 -11 1376 CQ UR4UM KO50 (x2) 053345 -5 1005 UR4UM SM5WXF JO87 (x2)
UTC dB Audio Message 155800 -13 855 UR4UM BA3NZ 73 162630 -17 1889 CQ UR4UM KO50 (x3) 162745 -4 1888 UR4UM G4UJS -16 (x2) 162830 -16 1889 G4UJS UR4UM 73 162900 -17 1888 CQ UR4UM KO50 080145 -1 2427 UN7IV UR4UM RR73 080300 +0 2426 A61OK UR4UM -14 (x4) 080545 -6 2421 BG0FQU UR4UM -16 (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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