UR5KCR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KO20

Receiver-side FT8 activity involving UR5KCR, decoded by SO8OO in southeastern Poland. 110 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-30 and 2026-07-08.

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 110 FT8 messages attributed to UR5KCR as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (77%), followed by 80 m (17%) and 20 m (5%). Several six-hour UTC windows tied for the largest share (82%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

110
Messages attributed
5
UTC dates decoded
21
Active 15-min windows
-9 dB
Estimated median S/N

Bands

First attributed message: 2026-06-30
Last attributed message: 2026-07-08 17:17 UTC

Observed FT8 message patterns

Attributed sample
110 messages
Active dates
5 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-18 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 43, strong (≥ -8 dB) 51.

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.

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 UR5KCR

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
KO20 · 60 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
237 km (approx.)
Last such locator decoded
2026-07-08 17:08 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 UTCBandUR5KCR S/NCounterpartCounterpart S/NMsgsCapture
07-24 15:17 10m - / -6 ES0RY -10 / - 2 ✓ Closing fragment
07-24 15:17 10m - / - DL3RDO -16 / - 4 ✓ Closing fragment
07-24 15:11 10m - / - DL3RDO -10 / - 3 Partial capture
07-24 15:11 10m - / -16 DO5PY -8 / - 2 Partial capture
07-24 12:29 10m - / -22 DJ0MAB -10 / - 6 Partial capture
07-24 12:24 10m - / +9 RN6MA -21 / - 2 Partial capture
07-24 12:23 10m - / -4 F1PBZ 0 / - 3 Partial capture
07-24 08:48 10m - / - DF8MV 0 / - 2 ✓ Closing fragment
07-24 08:46 10m - / -18 F4BJN -24 / - 2 ✓ Closing fragment
07-24 08:42 10m - / - DF8MV -2 / - 5 Partial capture
07-24 08:32 10m - / -4 TK5K 0 / - 2 ✓ Closing fragment
07-08 19:16 80m - / -16 HA7TM +21 / - 3 ✓ Closing fragment
07-08 17:16 40m -10 / - IZ8PPI - / -11 2 ✓ Closing fragment
07-08 17:12 40m -2 / - HA3GX - / +5 2 Partial capture
07-08 17:12 40m -4 / - DL6ZXG -10 / -2 4 Partial capture
07-08 17:11 40m -5 / - SP7TF - / +8 3 Partial capture
07-08 16:24 20m - / -14 DH1FA -18 / - 2 Partial capture
07-08 07:04 40m -10 / - GJ0KYZ - / - 10 Partial capture
07-07 19:29 40m -10 / - DL1IP -9 / +4 4 ✓ Closing observed
07-07 19:16 80m - / -17 HF5A +6 / - 4 ✓ Closing fragment
07-07 18:23 40m -8 / - ZS6NL - / - 7 Partial capture
07-07 18:21 40m -6 / - IK4LZH - / +10 2 ✓ Closing fragment
07-07 18:19 40m -11 / - S57MG -19 / -2 2 Partial capture
07-07 18:07 40m -24 / - SV9QWC - / 0 2 Partial capture
07-07 18:03 40m - / - UR4UUR -22 / - 2 Partial capture
07-07 18:01 40m - / -4 SP1ADT -10 / - 3 ✓ Closing fragment
07-07 17:55 40m -23 / - SV1DKR - / -7 3 Partial capture
07-07 07:26 20m - / - HG8LXL -11 / - 2 Partial capture
07-07 07:23 20m - / -13 DK7ZT -18 / - 2 ✓ Closing fragment
07-07 07:03 20m - / - PD1HPB -17 / - 4 Partial capture
07-07 07:02 20m - / -13 DL3MIB -10 / - 7 ✓ Closing fragment
07-07 07:02 20m - / - DL9KM -14 / - 5 Partial capture
07-07 07:02 20m - / - F5RRS -7 / - 3 Partial capture
07-06 21:46 80m -3 / - LZ01MIKU - / +4 3 Partial capture
07-06 21:35 40m - / -10 OK1WCF -5 / - 4 ✓ Closing fragment
07-06 21:29 40m - / -1 HG8LXL 0 / - 4 ✓ Closing fragment
07-06 21:19 40m -10 / - F1IQH - / -5 2 ✓ Closing fragment
07-06 21:15 40m -11 / - LA5JY - / - 2 Partial capture
07-06 21:11 40m -8 / - <...> - / - 3 Partial capture
07-06 21:09 40m -10 / - F5PBG - / -10 2 ✓ Closing fragment
07-06 21:07 40m -10 / - A61DD - / - 2 ✓ Closing fragment
07-06 20:05 40m - / - PA3AGN -17 / - 2 ✓ Closing fragment
07-06 19:25 40m -8 / -10 ON4CAS -12 / -11 6 ✓ Full exchange observed
07-06 19:10 40m -9 / - <...> - / -15 15 Partial capture
07-06 19:04 40m -15 / - EI4JFB - / -8 2 Partial capture
07-06 18:10 40m - / - E70SZ -6 / - 2 ✓ Closing fragment
07-06 18:01 80m - / - UA4FKT +3 / - 3 Partial capture
07-06 17:58 80m -3 / -11 UT3XM +3 / +1 5 ✓ Full exchange observed
07-06 17:57 80m +2 / - DG2PHE - / - 3 Partial capture
07-06 17:46 10m - / -6 F1PBZ +6 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

10m
UTC    dB Audio  Message
123145  -2  390  UR5KCR DJ0MAB R-22 (x3)
151130 -10 1325  UR5KCR DO5PY -16
151130  -3 1487  UR5KCR DL3RDO JN68
151200  -7 1325  UR5KCR DO5PY -16
151200 -11 1487  UR5KCR DL3RDO JN68 (x3)
151730  -8  767  UR5KCR ES0RY -06
151730 -17 1058  UR5KCR DL3RDO JN68
151930 -11  767  UR5KCR ES0RY RR73
151930 -18 1915  UR5KCR DL3RDO JN68 (x2)
071800 -16 1766  UR5KCR ON8PB RR73
40m
UTC    dB Audio  Message
070945  -7 1021  GJ0KYZ UR5KCR KO20
170830 -15 1021  CQ UR5KCR KO20
170930 -13 1021  PE1NPS UR5KCR -05
171100  -7 1021  SP7TF UR5KCR R+08 (x3)
171215 -10 2691  UR5KCR DL6ZXG JO51
171230  -2 1021  HA3GX UR5KCR +05
171300  -1 1022  DL6ZXG UR5KCR -02 (x2)
171430  -2 1022  HA3GX UR5KCR +05
171530  -8 1022  DL6ZXG UR5KCR -02
171630 -11 1022  IZ8PPI UR5KCR R-11 (x2)
205415 -10  738  UR5KCR F1PBZ -21
80m
UTC    dB Audio  Message
180230  +2  799  UR5KCR UA4FKT LO23
180330  +1  800  DL2RN UR5KCR KO20
214300  +0  982  CQ UR5KCR KO20
214530  -7 1920  UR5KCR <...> -20
214615  -8  982  LZ01MIKU UR5KCR R+04 (x3)
191600  +0 1052  DO2KMB UR5KCR KO20
191645  +4 2676  UR5KCR HF5A JO92 (x4)
191615 +23  985  UR5KCR HA7TM JN97 (x3)
20m
UTC    dB Audio  Message
070600 -19 2188  UR5KCR PA0LDE JO22
070600  -9 1109  UR5KCR DL3MIB 73
070930 -16 1056  UR5KCR TA3ZGR -17
071230 -12 2860  UR5KCR DL1BBO R-17
071730 -17 2472  UR5KCR PE1NPS JO22
072100  -6  611  UR5KCR DL6UM R-16
072130  -7 1053  UR5KCR 9A4ZM JN86
072300 -20 2082  UR5KCR DK7ZT -13 (x2)
072630 -12 2662  UR5KCR HG8LXL KN06 (x2)
073445 -11 1053  UR5KCR 9A4ZM JN86
162415 -16 1809  UR5KCR DH1FA -14 (x2)
162845  -9  631  UR5KCR DK8HC JO42

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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