UB0SMX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: OO06

Receiver-side FT8 activity involving UB0SMX, decoded by SO8OO in southeastern Poland. 161 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 16 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-07.

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 161 FT8 messages attributed to UB0SMX as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (16%) and 20 m (4%). Most decodes (99%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (69%); the estimated median was -17 dB.

Overview

161
Messages attributed
16
UTC dates decoded
45
Active 15-min windows
-17 dB
Estimated median S/N

Bands

80m · 129 40m · 25 20m · 7
First attributed message: 2026-06-07
Last attributed message: 2026-08-07 18:03 UTC

Observed FT8 message patterns

Attributed sample
161 messages
Active dates
16 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-24 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 111, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 9.

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 UB0SMX 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 UB0SMX

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
OO06 · 98 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
5,025 km (approx.)
Last such locator decoded
2026-07-28 20:34 UTC

Other locator fields attributed to this token: OO16 (3).

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 UTCBandUB0SMX S/NCounterpartCounterpart S/NMsgsCapture
09-09 18:15 40m - / -19 UA3PI +7 / - 2 ✓ Closing fragment
09-09 18:15 40m - / -16 <...> 0 / - 4 Partial capture
09-09 17:57 40m - / -15 UB3XCA -5 / - 4 ✓ Closing fragment
08-07 18:02 80m -16 / - <...> - / +8 4 Partial capture
08-04 21:07 40m - / -7 RZ6AKF +3 / - 2 Partial capture
08-04 21:02 40m - / - S51UN -1 / - 3 Partial capture
08-04 20:50 40m - / - R6AO -19 / - 2 Partial capture
08-04 20:47 40m - / -5 YO8PS -3 / - 3 ✓ Closing fragment
08-04 20:44 40m - / -15 RV3X -3 / - 3 ✓ Closing fragment
08-04 20:32 40m - / -15 DK1RWR -7 / - 6 ✓ Closing fragment
08-04 20:28 40m - / -12 F1DJY -3 / - 2 ✓ Closing fragment
08-04 20:09 40m - / -4 OK1JMB -16 / - 4 ✓ Closing fragment
08-04 19:54 40m - / - PA0GSP -8 / - 2 Partial capture
08-04 19:50 40m - / - R2ASD -3 / - 3 ✓ Closing fragment
08-04 19:45 40m - / - YT1DL -6 / - 2 Partial capture
08-04 19:36 40m - / - PA0GSP -7 / - 3 Partial capture
08-04 19:33 40m - / -16 PE1DQV -14 / - 2 Partial capture
08-04 18:12 40m - / - DL2NBJ 0 / - 7 Partial capture
08-04 18:08 40m - / - OM5ALL -2 / - 4 Partial capture
08-04 18:03 40m - / - OM5ALL +6 / - 3 Partial capture
08-04 17:58 40m - / -10 DJ0MDC -4 / - 5 ✓ Closing fragment
08-04 17:57 40m - / - HA5AIL +4 / - 2 Partial capture
08-04 17:53 40m - / +1 HA1TAB +8 / - 6 Partial capture
08-04 17:51 40m - / -13 HB9CZF -2 / - 2 ✓ Closing fragment
08-04 17:49 40m - / - S51CC -9 / - 4 Partial capture
08-04 17:18 40m - / -10 DK8ZZ -13 / - 4 Partial capture
08-04 17:17 40m - / -14 OK2RM -6 / - 2 Partial capture
08-04 17:09 40m - / -12 OK2RM -5 / - 2 Partial capture
08-04 16:52 40m - / -5 RW6BT -2 / - 2 ✓ Closing fragment
08-04 16:31 40m - / - HB9BLQ -2 / - 2 Partial capture
08-04 16:27 40m - / - YT2TW -9 / - 2 Partial capture
08-04 15:32 40m - / +9 R4CY -16 / - 2 ✓ Closing fragment
08-03 18:40 40m - / - IZ0RPS -7 / - 2 Partial capture
08-03 16:37 40m - / -4 RW3QW -10 / - 2 Partial capture
08-03 16:08 40m - / -3 RN6HGI -10 / - 3 ✓ Closing fragment
07-30 16:22 40m - / -4 RK6A -7 / - 2 ✓ Closing fragment
07-30 15:58 40m - / -7 RX7O -18 / - 2 ✓ Closing fragment
07-29 19:52 40m - / -8 UA3YFL -3 / - 3 ✓ Closing fragment
07-29 19:42 40m - / -1 R3RZ -18 / - 2 ✓ Closing fragment
07-29 19:40 40m - / -1 F5VHQ -2 / - 2 Partial capture
07-29 19:38 40m - / -16 SP7VPR +2 / - 2 ✓ Closing fragment
07-29 19:30 40m - / - SP6TID -6 / - 2 Partial capture
07-29 19:25 40m - / -9 IK4RUX -14 / - 3 Partial capture
07-29 19:12 40m - / -10 RD3MF -5 / - 4 ✓ Closing fragment
07-29 18:48 40m - / - RA3ZOM -12 / - 6 Partial capture
07-29 18:45 40m - / -10 UB3LCO -6 / - 3 ✓ Closing fragment
07-29 18:03 40m - / -14 DL2KBQ -6 / - 2 ✓ Closing fragment
07-29 17:52 40m - / - YO6QDY -10 / - 2 Partial capture
07-29 17:20 40m - / -12 RN6HK -17 / - 3 ✓ Closing fragment
07-29 16:36 40m - / -15 RA6MQ -22 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
210315  -3  432  UB0SMX S51UN JN75
210745  +3  433  UB0SMX RZ6AKF -07 (x2)
175115  -5 2657  UB0SMX ON4IQ JO20
175715  -3  604  UB0SMX UB3XCA KO85 (x4)
180915 -17  583  UB0SMX UB8QCA R+04
181500  +1 2938  UB0SMX <...> -16
181530  +5 1409  UB0SMX UA3PI -19
181530  +2 2938  UB0SMX <...> -16
181600  +9 1409  UB0SMX UA3PI RR73
181600  +1 2938  UB0SMX <...> -16 (x2)
80m 
UTC    dB Audio  Message
191900 -18 2667  <UB0SMX> RO2E/M RR73
191900  +2  898  UB0SMX RZ3DX -08
191915 -23  653  RO2E/M UB0SMX R-14
191930 -15 2667  <UB0SMX> RO2E/M RR73
191930  +8  898  UB0SMX RZ3DX -08
193900 -17 2607  UB0SMX <...> -21
193945 -13  405  UB0SMX/P UB0SMX R-17
194045  -9  404  <...> UB0SMX R-17
194645  -8  404  UB0SMX/P UB0SMX -09
194730  -4 1183  UB0SMX R2PT KO84 (x2)
180215 -16 1341  <...> UB0SMX +08 (x4)
20m 
UTC    dB Audio  Message
171245  +8  671  UB0SMX RC6OU -15
051245 -14 2371  UB0SMX IK6DLK JN63 (x2)
162630 -12  897  UB0SMX RA6ZS -08
164715 -16 2039  UB0SMX RW6MMU LN07 (x3)
022145 -24 1638  UB0SMX RO6OT KN98 (x3)
111045  -8 2197  UB0SMX R2PA RR73
134830 -20 1482  UB0SMX RW3ZR R-05 (x2)
140415 -12  535  UB0SMX 4X5MZ KM71
043945 -23 2069  UB0SMX R2BQM -19

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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