UT4EX — 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: Ukraine

Receiver-side FT8 activity involving UT4EX, decoded by SO8OO in southeastern Poland. 44 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-15 and 2026-10-21.

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 44 FT8 messages attributed to UT4EX as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

44
Messages attributed
2
UTC dates decoded
6
Active 15-min windows
-11 dB
Estimated median S/N

Bands

First attributed message: 2026-09-15
Last attributed message: 2026-10-21 14:56 UTC

Observed FT8 message patterns

Attributed sample
44 messages
Active dates
2 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-15 to +3 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 17.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with UT4EX in decoded directed-looking exchanges:

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 UTCBandUT4EX S/NCounterpartCounterpart S/NMsgsCapture
10-21 14:55 40m +4 / - BG0FQU - / -19 2 Partial capture
10-21 14:51 40m +1 / - 9V1PL - / -24 3 Partial capture
10-21 14:49 40m +3 / -14 YB5WIR -18 / -12 6 ✓ Full exchange observed
10-21 14:47 40m +1 / -2 US5WFL 0 / +4 6 ✓ Full exchange observed
09-20 11:14 10m - / -18 CR7BUJ -10 / - 2 ✓ Closing fragment
09-15 16:54 40m - / - DK8HC -7 / - 5 Partial capture
09-15 16:51 40m +3 / - UT3SO - / -7 4 Partial capture
09-15 11:53 40m -16 / - LZ1ZF -9 / +5 5 ✓ Full exchange observed
09-15 06:54 40m -12 / - LY3QR - / -16 2 Partial capture
09-15 06:51 40m -12 / - LY2EW -1 / -7 5 ✓ Closing observed
09-15 06:44 40m -10 / - UR5TOK - / -6 2 Partial capture
09-15 06:40 40m -13 / 0 YO3GNF +2 / +5 6 ✓ Full exchange observed
09-15 06:33 40m -16 / - DJ0MAB -13 / -13 3 Partial capture
09-15 06:29 40m -11 / - WB8YJF/NA67 - / -12 3 Partial capture
09-15 06:26 40m -11 / -14 UX2QX -4 / -9 7 ✓ Full exchange observed
09-15 06:24 40m -15 / -1 UR5TOC -12 / +7 3 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
144815  +1 2644  US5WFL UT4EX +04 (x2)
144900  +2  646  UT4EX US5WFL 73
144915  +1 2644  US5WFL UT4EX 73
144945  +3 2643  YB5WIR UT4EX -12 (x2)
145030 -18 1448  UT4EX YB5WIR R-14
145045  +2 2643  YB5WIR UT4EX RR73
145100 -17 1448  UT4EX YB5WIR 73
145115  +4 2643  YB5WIR UT4EX 73
145145  +2 2642  9V1PL UT4EX -24 (x3)
145545  +4 2619  BG0FQU UT4EX -19 (x2)
10m
UTC    dB Audio  Message
111400  -9 1302  UT4EX CR7BUJ R-18 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee