UX5XK — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving UX5XK, decoded by SO8OO in southeastern Poland. 144 FT8 messages attributed to this token as transmitter, on 160m, across 6 UTC dates in the available aggregate history. Observed between 2026-09-14 and 2026-09-19.

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 144 FT8 messages attributed to UX5XK as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (100%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (100%); the estimated median was +15 dB.

Overview

144
Messages attributed
6
UTC dates decoded
27
Active 15-min windows
+15 dB
Estimated median S/N

Bands

160m · 144
First attributed message: 2026-09-14
Last attributed message: 2026-09-19 21:10 UTC

Observed FT8 message patterns

Attributed sample
144 messages
Active dates
6 UTC dates
Estimated median S/N
+15 dB
Estimated 10th-90th percentile
+8 to +22 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 144.

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 UX5XK 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 UX5XK

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 · 4 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
516 km (approx.)
Last such locator decoded
2026-09-17 19:47 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 UTCBandUX5XK S/NCounterpartCounterpart S/NMsgsCapture
09-19 21:05 160m +16 / -3 7X2TT -3 / -19 12 ✓ Full exchange observed
09-19 20:55 160m +17 / -9 IU2VWQ -18 / -19 7 ✓ Full exchange observed
09-19 20:52 160m +22 / -16 UN7LZ -22 / -12 4 ✓ Full exchange observed
09-19 20:14 160m +20 / - JA0DAI - / -22 4 ✓ Closing fragment
09-19 19:52 160m - / - SQ7BKG -6 / - 2 Partial capture
09-19 19:47 160m +13 / - EX7CQ -14 / -14 7 ✓ Closing observed
09-18 20:17 160m +17 / - SV1DKR - / -17 2 ✓ Closing fragment
09-18 20:15 160m +16 / +6 OE4KQW -8 / -11 4 ✓ Full exchange observed
09-18 20:13 160m +8 / +1 DO9AO +4 / -15 4 ✓ Full exchange observed
09-18 20:08 160m +10 / +1 EI5GSB -23 / -12 3 ✓ Full exchange observed
09-18 20:05 160m +13 / -1 DJ3JD -7 / -16 4 ✓ Full exchange observed
09-18 20:04 160m +16 / -3 EI5GSB -20 / -15 2 Partial capture
09-18 20:03 160m - / - OM1DLC/P -8 / - 2 Partial capture
09-18 20:03 160m +17 / -1 DL8OH +2 / - 3 ✓ Closing observed
09-18 19:56 160m +13 / - JR2UXO - / -23 2 Partial capture
09-17 22:05 160m +13 / -9 G4ITR -19 / -16 7 ✓ Full exchange observed
09-17 21:53 160m +12 / - OH6B - / -7 3 ✓ Closing fragment
09-17 21:50 160m +15 / +1 DJ3JD -7 / -20 8 ✓ Full exchange observed
09-17 21:47 160m +26 / - OH5KNL -6 / +4 4 ✓ Full exchange observed
09-17 21:45 160m +24 / +2 DL5EBS -9 / -16 4 ✓ Full exchange observed
09-17 21:28 160m +22 / - OH6UAK - / -15 2 ✓ Closing fragment
09-17 21:22 160m +15 / - EA6Y - / -6 3 Partial capture
09-17 21:17 160m +15 / - DL6MRM -2 / - 2 ✓ Closing observed
09-17 21:12 160m +14 / -3 SQ9BC +10 / -8 4 ✓ Full exchange observed
09-17 21:09 160m +16 / -12 SV2DXG -19 / -11 4 ✓ Full exchange observed
09-17 21:06 160m +20 / -6 IW5ABF -13 / -21 8 ✓ Full exchange observed
09-17 21:05 160m -1 / - OZ1KZX -9 / - 2 ✓ Closing observed
09-17 21:01 160m +20 / - EA3A - / -24 3 Partial capture
09-17 20:59 160m +19 / - SV9MBH - / -20 2 ✓ Closing fragment
09-17 20:54 160m +21 / - SQ8AA - / -18 3 Partial capture
09-17 20:38 160m +16 / - V51WH - / -11 2 Partial capture
09-17 20:19 160m +8 / - OI5AY - / -14 3 Partial capture
09-17 19:45 160m +12 / - RI1FJZ - / -14 5 Partial capture
09-17 18:44 160m +10 / - OH7MFO - / -18 4 Partial capture
09-17 18:36 160m +8 / -4 HB9EFK -4 / -17 5 ✓ Full exchange observed
09-17 18:35 160m +6 / - S57MPU 0 / -5 4 ✓ Full exchange observed
09-17 18:30 160m +10 / - OE3KJO -6 / -16 4 ✓ Full exchange observed
09-17 18:28 160m +12 / +1 9A5E -8 / -6 4 ✓ Full exchange observed
09-17 18:24 160m +14 / - OE3KJO - / -9 2 Partial capture
09-17 18:18 160m +16 / - DO5OT -2 / -17 4 ✓ Full exchange observed
09-17 00:16 160m +18 / -1 F5RRS -6 / -16 4 ✓ Full exchange observed
09-17 00:15 160m +14 / -10 F5RMK -16 / -18 13 ✓ Full exchange observed
09-16 18:06 160m +18 / - SP4LVG +14 / +4 5 ✓ Full exchange observed
09-16 18:05 160m +21 / +2 UY2RA -4 / -5 4 ✓ Full exchange observed
09-16 18:04 160m +19 / +10 OM3SX +6 / -5 4 ✓ Full exchange observed
09-15 20:08 160m +13 / - OK2USM -5 / - 3 ✓ Closing observed
09-15 20:03 160m +16 / -3 G4IRN +11 / -6 4 ✓ Full exchange observed
09-15 19:57 160m - / - IV3KNT -18 / - 2 Partial capture
09-15 19:56 160m +19 / -5 IZ3VCN -2 / -17 4 ✓ Full exchange observed
09-14 21:03 160m +14 / -1 DJ3JD -10 / -16 3 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
205630 -18 2060  UX5XK IU2VWQ R-03
205645 +22  681  IU2VWQ UX5XK RRR
205700 -18 2059  UX5XK IU2VWQ 73
210515 +19  763  7X2TT UX5XK -19 (x6)
210900  +0  496  UX5XK 7X2TT R-03
210915 +16  596  7X2TT UX5XK -17
210930  -7  496  UX5XK 7X2TT R+00
210945 +15  596  7X2TT UX5XK RRR
211000  -2  496  UX5XK 7X2TT RR73
211015 +16  596  7X2TT UX5XK 73

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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