UB2FEK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Kaliningrad Most frequent locator attributed to this token: KO04

Receiver-side FT8 activity involving UB2FEK, decoded by SO8OO in southeastern Poland. 1,061 FT8 messages attributed to this token as transmitter, on 40m, across 17 UTC dates in the available aggregate history. Observed between 2026-07-05 and 2026-09-18.

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 1,061 FT8 messages attributed to UB2FEK as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (96%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -5 dB.

Overview

1,061
Messages attributed
17
UTC dates decoded
145
Active 15-min windows
-5 dB
Estimated median S/N

Bands

First attributed message: 2026-07-05
Last attributed message: 2026-09-18 19:48 UTC

Observed FT8 message patterns

Attributed sample
1,061 messages
Active dates
17 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-15 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 103, moderate (-15 to -9 dB) 268, strong (≥ -8 dB) 690.

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.

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 UB2FEK

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
KO04 · 569 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
510 km (approx.)
Last such locator decoded
2026-09-18 19:46 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 UTCBandUB2FEK S/NCounterpartCounterpart S/NMsgsCapture
09-18 19:50 40m - / -5 UB3ADO/P +2 / - 2 Partial capture
09-18 19:47 40m +8 / - BI3UPU - / -23 3 Partial capture
09-18 19:45 40m -6 / - VU3IHP - / - 2 Partial capture
09-18 19:41 40m 0 / - T77R - / - 2 Partial capture
09-18 19:35 40m -5 / - VJ6X - / - 2 Partial capture
09-18 19:34 40m -2 / - UA1OJL - / -6 3 ✓ Closing fragment
09-18 19:31 40m -5 / - EA5KB - / - 2 Partial capture
09-18 19:29 40m -2 / - JS2TFX - / - 2 Partial capture
09-18 19:27 40m -4 / - VU3IHP - / - 3 Partial capture
09-18 19:23 40m -8 / - RX7KIR - / -12 2 Partial capture
09-18 19:18 40m -14 / -12 9H4JX -18 / - 2 Partial capture
09-18 19:18 40m -15 / -5 RW6ATD +14 / - 4 ✓ Full exchange observed
09-18 18:48 40m -4 / - 9H4JX - / - 2 Partial capture
09-18 18:44 40m -8 / - PA3BRB +15 / +7 7 Partial capture
09-18 18:35 40m -4 / - 9H4JX - / - 4 Partial capture
09-18 18:30 40m -8 / - RI1FJZ - / - 2 Partial capture
09-18 18:22 40m -2 / - SV9/TF1OL - / - 3 Partial capture
09-18 17:08 40m -8 / - R9FDI - / -20 4 Partial capture
09-18 17:06 40m -8 / - R4UAS - / -10 2 ✓ Closing fragment
09-18 17:04 40m -7 / - RK3YWA - / -4 3 ✓ Closing fragment
09-18 16:53 40m -6 / - DH8BAR - / -18 3 Partial capture
09-18 16:52 40m -10 / - R1NL - / - 2 Partial capture
09-18 16:51 40m -4 / -9 RA6BL +4 / +5 4 ✓ Full exchange observed
09-17 19:35 40m -8 / - RX9WM - / -12 4 Partial capture
09-17 19:34 40m - / -8 YO7LMU +8 / - 8 Partial capture
09-17 19:00 40m - / - PD4RJ -13 / - 4 Partial capture
09-17 18:57 40m - / -12 R6CW +2 / - 2 Partial capture
09-17 18:52 40m -10 / -8 LA8ENA -5 / -5 5 Partial capture
09-17 18:42 40m -14 / -20 SV2FNT -2 / -20 4 ✓ Full exchange observed
09-17 18:27 40m - / - UB3LBU -5 / - 2 Partial capture
09-17 18:24 40m -11 / -16 DL1API +2 / -22 5 ✓ Full exchange observed
09-17 18:22 40m - / - DL1API +2 / - 2 Partial capture
09-17 18:20 40m -9 / -10 E74K +3 / -11 7 Partial capture
09-17 18:15 40m -11 / - E74K - / - 3 Partial capture
09-17 18:10 40m - / -10 E79AI -5 / - 4 Partial capture
09-17 18:07 40m - / -4 DL2SUD +3 / - 6 ✓ Closing fragment
09-17 18:06 40m - / -11 S53AK +4 / - 6 ✓ Closing fragment
09-17 17:54 40m - / - 2E0UMK -13 / - 3 Partial capture
09-17 17:53 40m - / - DG1ASE -7 / - 3 Partial capture
09-17 17:49 40m -14 / - SP6PST - / - 2 Partial capture
09-17 17:47 40m -14 / - RV3QP - / - 3 Partial capture
09-17 17:38 40m - / -14 UT5EPP +5 / - 2 ✓ Closing fragment
09-17 17:32 40m -13 / -12 DL5MO +7 / -13 5 ✓ Full exchange observed
09-17 17:31 40m -13 / -1 EW6CB -8 / -3 5 ✓ Full exchange observed
09-17 16:17 40m - / - TA3STR -3 / - 2 Partial capture
09-17 16:14 40m -10 / -21 HZ1TT -12 / -3 5 ✓ Full exchange observed
09-15 18:54 40m - / - R0QBB/3 0 / - 2 Partial capture
09-15 18:52 40m -14 / -15 DL3HWD -1 / - 8 ✓ Closing observed
09-15 18:49 40m - / -11 E77EA +1 / - 3 ✓ Closing fragment
09-15 18:47 40m - / -18 DL3DKO +7 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
193500  +3 2879  UA1OJL UB2FEK 73
193530  -3 2879  VJ6X UB2FEK KO04 (x2)
194100  -1 2996  T77R UB2FEK KO04 (x2)
194230  -9 1600  R1ZBB UB2FEK KO04
194400 -14 1599  VJ6X UB2FEK KO04
194515 -16 1502  VU3IHP UB2FEK KO04 (x2)
194745  +5 2879  BI3UPU UB2FEK -23 (x3)
195030  -1  428  UB2FEK UB3ADO/P KO95
195200 -12 2878  UB2FEK M7MVA IO94
195230  +6  428  UB2FEK UB3ADO/P R-05
80m
UTC    dB Audio  Message
194345  +0  254  UB2FEK I1RJP JN45 (x11)
60m
UTC    dB Audio  Message
164315  +9 2919  UB2FEK SP7TAC JO91
10m
UTC    dB Audio  Message
120630 -16 2204  UB2FEK DO1FZL 73
121430 -18 2299  UB2FEK DO1OAS RR73
121800 -19 1888  UB2FEK DK8EE JO41 (x3)
123130  -6 2602  UB2FEK DG9XN JO52 (x6)
124900 -18 1509  UB2FEK DK7UY JO44 (x2)
125315 -13 2073  UB2FEK OZ5NJ +04 (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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