UB3XCA — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving UB3XCA, decoded by SO8OO in southeastern Poland. 162 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-11-06.

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 162 FT8 messages attributed to UB3XCA as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 80 m (7%) and 20 m (5%). Most decodes (94%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

162
Messages attributed
24
UTC dates decoded
41
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 11 40m · 143 20m · 8
First attributed message: 2026-06-14
Last attributed message: 2026-11-06 13:04 UTC

Observed FT8 message patterns

Attributed sample
162 messages
Active dates
24 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-21 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 49, moderate (-15 to -9 dB) 72, strong (≥ -8 dB) 41.

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 UB3XCA 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 UB3XCA

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
KO85 · 81 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,193 km (approx.)
Last such locator decoded
2026-11-06 13:04 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 UTCBandUB3XCA S/NCounterpartCounterpart S/NMsgsCapture
11-06 13:02 40m -21 / +2 RJ3DC -15 / +4 4 ✓ Full exchange observed
11-04 13:54 40m - / -11 PD7BDN -12 / - 2 ✓ Closing fragment
11-04 13:53 40m - / - RV4LD -5 / - 5 Partial capture
10-31 15:17 40m - / - UA4NCX -18 / - 2 Partial capture
10-27 16:40 40m -12 / - PA0WDN - / - 2 ✓ Closing fragment
10-27 16:29 40m - / - PA0WDN -15 / - 7 Partial capture
10-27 16:15 40m - / -15 S51UN -5 / - 3 ✓ Closing fragment
10-27 16:11 40m -17 / - BG4FRZ - / -13 3 Partial capture
10-27 15:56 40m -8 / - R6YG -10 / - 2 ✓ Closing observed
10-27 15:53 40m - / -13 R8QA -20 / - 2 Partial capture
10-27 15:52 40m - / -8 RN6LRA -17 / - 4 ✓ Closing fragment
10-27 15:49 40m -12 / -14 S53AK -1 / -19 16 ✓ Full exchange observed
10-27 15:46 40m -11 / - RA6OD -15 / 0 4 ✓ Closing observed
10-26 16:34 40m - / - IU5VLR -18 / - 2 Partial capture
10-26 16:31 80m - / - RA3QQI -21 / - 3 Partial capture
10-26 16:28 80m - / - RX3ACO -15 / - 5 Partial capture
10-26 16:09 40m - / -11 OH3MB +4 / - 2 ✓ Closing fragment
10-26 16:08 40m - / -18 RZ6LY -12 / - 2 Partial capture
10-12 15:24 40m -12 / - RW4HRE - / -19 2 ✓ Closing fragment
10-12 15:21 40m -10 / - SQ8LSB - / -15 2 ✓ Closing fragment
10-12 15:19 40m -16 / -11 DL1DEU -5 / -21 5 ✓ Full exchange observed
10-12 15:18 40m -12 / - RW4HRE - / -17 2 Partial capture
10-12 15:16 40m -12 / -7 IU4DTV -2 / -20 4 ✓ Full exchange observed
10-11 15:44 80m - / - RA6ANN -12 / - 4 Partial capture
10-11 15:34 40m - / -8 RA6ANN -10 / - 2 ✓ Closing fragment
10-11 15:29 40m - / -11 DK2CC 0 / - 7 ✓ Closing fragment
10-11 15:29 40m -20 / -4 R4PHH -20 / - 3 ✓ Closing observed
10-11 15:27 40m -18 / - RU3VT -15 / -15 3 ✓ Closing observed
10-11 15:24 40m -15 / -14 UA4FET -15 / -7 3 ✓ Closing observed
10-11 15:22 40m - / - IK8UHA -8 / - 3 Partial capture
10-11 15:21 40m - / -14 RW7B -2 / - 2 ✓ Closing fragment
10-11 15:14 40m - / -9 R3KLE -7 / - 3 ✓ Closing fragment
09-27 16:13 80m - / -2 RJ3T -22 / - 2 Partial capture
09-27 16:12 80m -14 / -4 R2BRU -14 / -16 4 ✓ Full exchange observed
09-25 16:06 40m -14 / -16 R4DD -8 / -14 4 ✓ Full exchange observed
09-24 17:17 40m - / -11 RA6LTD -16 / - 4 Partial capture
09-24 17:01 40m - / -9 R3UAF -19 / - 2 Partial capture
09-15 17:01 40m - / - PD0RCQ -10 / - 2 Partial capture
09-12 17:24 40m 0 / - EU6UE - / -16 3 ✓ Closing fragment
09-12 17:21 40m -2 / -4 PA3EWP +2 / - 5 Partial capture
09-12 17:17 40m -6 / - UB6ZDJ - / -5 2 ✓ Closing fragment
09-12 17:12 40m - / - F6BHK -13 / - 3 Partial capture
09-12 17:08 40m - / +4 OE6TNO -1 / - 5 ✓ Closing fragment
09-12 17:06 40m -6 / - UA6EU - / -8 2 ✓ Closing fragment
09-12 17:01 40m 0 / - UB6ZDJ -7 / +9 4 Partial capture
09-12 16:57 40m -6 / - R4HHG - / -19 2 ✓ Closing fragment
09-11 16:30 40m -7 / -4 EX7CQ 0 / +3 6 ✓ Full exchange observed
09-11 16:25 40m -6 / -16 ON4AOI +20 / -9 4 ✓ Full exchange observed
09-11 16:18 40m -8 / - RA4HG - / -13 2 ✓ Closing fragment
09-11 16:15 40m -7 / - R8OAE - / -12 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
135345  -7 2642  UB3XCA RV4LD LO33 (x2)
135415 -12 1772  UB3XCA PD7BDN R-11
135445  -4 2642  UB3XCA RV4LD LO33
135445 -13 1772  UB3XCA PD7BDN 73
135515  -3 2641  UB3XCA RV4LD LO33 (x2)
140030 -14 1773  CQ UB3XCA KO85 (x2)
141000  +1 2070  UB3XCA EV1R +02
130245 -17 1771  UB3XCA RJ3DC KO95
130300 -21 1771  RJ3DC UB3XCA +04
130315 -15 1771  UB3XCA RJ3DC R+02 (x2)
130430 -20 1571  CQ UB3XCA KO85
80m 
UTC    dB Audio  Message
154300 -24 1921  CQ UB3XCA KO85
154415 -17 1921  UB3XCA RD3MF KO97
154415 -10 2037  UB3XCA RA6ANN KN95 (x4)
162745 -11 1196  UB3XCA R3PLN 73
162815 -15 2456  UB3XCA RX3ACO KO85 (x5)
163145 -21 1719  UB3XCA RA3QQI KO90 (x3)
20m 
UTC    dB Audio  Message
161415  -2 1852  UB3XCA ON4ASV JO11 (x2)
125930  -7 1762  UB3XCA RX4SA R-01 (x2)
131115  -7  969  UB3XCA UA1OJL LP04 (x3)
155230 -14 1679  UB3XCA TA2NJH -05 (x7)

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.

Explore CW reception at SO8OO

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