KB4UF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Locator transmitted in a decoded message: EM90

Receiver-side FT8 activity involving KB4UF, decoded by SO8OO in southeastern Poland. 77 related FT8 messages, observed on 80m, 40m, 20m, across 16 UTC dates. Heard between 2026-05-26 and 2026-08-24.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

77
Related messages
0
CQ messages
16
UTC dates heard
-8 dB
Mean decoder S/N

Bands

First seen: 2026-05-26
Last seen: 2026-08-24 01:31 UTC

Activity Heatmap

Locator transmitted by KB4UF

Approximate centre of EM90, decoded 2026-07-25 02:44 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTCBandKB4UF S/NCounterpartCounterpart S/NMsgsCapture
08-24 03:30 20m - / - R7WA +4 / - 3 Partial capture
08-21 03:37 20m - / -12 UN6LN +8 / - 3 ✓ Closing fragment
08-21 03:29 20m - / -10 UA6AFS -12 / - 3 Partial capture
07-25 03:03 40m - / - TK5K -20 / - 2 ✓ Closing fragment
07-25 02:44 80m -12 / - <...> - / - 2 Partial capture
07-24 06:32 40m - / -14 OE9DAI -15 / - 7 ✓ Closing fragment
07-22 04:33 20m - / - R7DX -8 / - 3 Partial capture
07-22 04:31 20m - / - SP8AJK -10 / - 5 Partial capture
07-22 04:26 20m - / - IU6SBJ -10 / - 2 Partial capture
06-19 03:19 80m - / - HB9CXZ +10 / - 6 Partial capture
06-11 02:51 20m - / -9 YO4NF +6 / - 2 ✓ Closing fragment
06-11 02:49 20m -16 / - LZ1KU - / - 2 Partial capture
06-09 02:59 40m - / - F6FHZ -23 / - 3 Partial capture
06-09 02:58 40m - / - IU8RFW -11 / - 3 Partial capture
06-09 02:55 40m -18 / - <...> - / -8 6 Partial capture
06-07 06:04 20m - / - LA1YKA -7 / - 3 Partial capture
06-05 04:42 20m -8 / - OJ0Z - / -15 2 ✓ Closing fragment
06-05 04:37 20m -12 / - OJ0Z - / - 4 Partial capture
05-30 02:56 20m - / -8 R6DVV -12 / - 4 ✓ Closing fragment
05-30 02:47 20m -24 / -11 A93MO -22 / - 4 Partial capture
05-27 04:59 20m - / - EA5D -4 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
043330 -14 1562  KB4UF F4JCU JN16
043400 -11  873  KB4UF SP8AJK KO10
043400  -9 2189  KB4UF R7DX KN84 (x3)
032900 -11  707  KB4UF UA6AFS LN05 (x3)
033715 +10  900  KB4UF UN6LN -12 (x2)
033815 -15 2015  KB4UF UN7PNF -12
033845  +7  900  KB4UF UN6LN RR73
033015  +1 1743  KB4UF R7WA LN32 (x3)
80m
UTC    dB Audio  Message
031915 +11 2435  KB4UF HB9CXZ JN46 (x6)
030145 -23 1137  K2B KB4UF EM90 (x2)
024445 -11 1137  <...> KB4UF EM90 (x2)
015800 -24 1875  KB4UF <...> -02
40m
UTC    dB Audio  Message
025945 -15 1302  KB4UF IU8RFW JN70
030045 -22 1849  KB4UF F6FHZ JN18
025545 -20 1937  KB4UF <...> -09
032830 -20 1221  KB4UF F5PBG R-20
021615  -8 1171  KB4UF UA4FKT LO23
063245 -21 1587  KB4UF OE9DAI JN47 (x7)
025700 -18 1768  KB4UF TK5K -05 (x3)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.