UR5UU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KO40

Receiver-side FT8 activity involving UR5UU, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-08-23.

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 21 FT8 messages attributed to UR5UU as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (76%) fell within the six-hour window 08:00-14:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (86%); the estimated median was -19 dB.

Overview

21
Messages attributed
5
UTC dates decoded
5
Active 15-min windows
-19 dB
Estimated median S/N

Bands

20m · 21
First attributed message: 2026-06-26
Last attributed message: 2026-08-23 09:25 UTC

Observed FT8 message patterns

Attributed sample
21 messages
Active dates
5 UTC dates
Estimated median S/N
-19 dB
Estimated 10th-90th percentile
-23 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 0.

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 UR5UU 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 UR5UU

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
KO40 · 13 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
516 km (approx.)
Last such locator decoded
2026-08-23 09:25 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 UTCBandUR5UU S/NCounterpartCounterpart S/NMsgsCapture
08-28 10:27 20m - / +9 PD5GO 0 / - 6 ✓ Closing fragment
08-28 10:26 20m - / - GJ0KYZ 0 / - 2 Partial capture
08-28 09:11 10m - / -6 I4MKN -16 / - 2 Partial capture
08-23 09:25 20m -17 / - SP6AMI - / - 2 Partial capture
08-23 09:24 20m -17 / -16 PD0MNO -12 / - 2 Partial capture
08-21 08:43 10m - / -2 II7MGXX +6 / - 2 Partial capture
08-12 16:46 20m - / -19 DH5NC -6 / - 2 ✓ Closing fragment
08-03 07:38 20m - / -7 PD1DTH -10 / - 3 ✓ Closing fragment
08-02 07:52 20m - / -13 DF5EI -14 / - 2 ✓ Closing fragment
08-02 07:52 20m - / -11 HB9DGZ -6 / - 2 Partial capture
07-24 17:46 40m - / +3 SN5Z -10 / - 2 ✓ Closing fragment
07-19 16:26 40m - / -19 OE3RWR -10 / - 4 Partial capture
07-19 16:18 40m - / -16 OZ9FF -11 / - 8 Partial capture
07-19 16:08 20m -22 / - IU3WIX - / -10 2 Partial capture
07-19 09:41 10m - / -1 HB9COF +3 / - 5 ✓ Closing fragment
07-18 16:03 10m - / -8 LZ3CB +6 / - 2 ✓ Closing fragment
07-18 08:48 10m - / -8 IK7IMK -4 / - 2 ✓ Closing fragment
07-16 14:04 20m - / -5 KF0YOB -13 / - 6 ✓ Closing fragment
06-26 10:08 10m - / -11 YL3ARQ -10 / - 12 ✓ Closing fragment
06-26 10:01 10m - / -25 DK7ZT -16 / - 3 Partial capture
06-26 09:46 20m -17 / - UR4UUA -15 / -15 5 Partial capture
06-25 01:57 20m - / -16 KB3Z -16 / - 2 Partial capture
06-25 00:54 40m - / - UX7QV -8 / - 6 Partial capture
06-25 00:45 40m - / - UX7QV -12 / - 4 Partial capture
06-25 00:41 20m - / -25 W4WIN -14 / - 3 Partial capture
06-25 00:22 20m - / -20 IQ4JO +13 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
083230 -11 1658  UR5UU IU2VWQ -24
092400 -12 1838  UR5UU PD0MNO -16
092415 -17 1430  PD0MNO UR5UU KO40
092515 -19 1430  SP6AMI UR5UU KO40 (x2)
162030 -19 2109  UR5UU ON2SLC JO10
102600  -1 1428  UR5UU GJ0KYZ IN89 (x2)
102730  -1 1427  UR5UU PD5GO R+09 (x4)
103030 -18 1427  UR5UU IU6WSB JN62
103130  +1 1427  UR5UU PD5GO 73 (x2)
10m 
UTC    dB Audio  Message
160130 -11 2022  UR5UU YO9PH -20
160330  +5 2142  UR5UU LZ3CB -08 (x2)
094115  -1 2153  UR5UU HB9COF JN47 (x5)
083530  +7 1252  UR5UU II7MGXX -03
083600  +4 1252  UR5UU RR73; DL7UG <...> +00
084330  +6 1252  UR5UU II7MGXX -02 (x2)
084430  +8 1252  UR5UU RR73; BG8SRK <...> -04
091100 -17 2346  UR5UU I4MKN -06 (x2)
40m 
UTC    dB Audio  Message
005745 -11 1976  UR5UU UX7QV KN29
161815  -5 2312  UR5UU OZ9FF -16 (x8)
162615  -9 2097  UR5UU OE3RWR -19 (x4)
174600 -10 2484  UR5UU SN5Z +03 (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.

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