UA2KU — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving UA2KU, decoded by SO8OO in southeastern Poland. 1,411 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-29.

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 1,411 FT8 messages attributed to UA2KU as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (77%), followed by 80 m (23%). Most decodes (100%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +3 dB.

Overview

1,411
Messages attributed
12
UTC dates decoded
79
Active 15-min windows
+3 dB
Estimated median S/N

Bands

First attributed message: 2026-06-07
Last attributed message: 2026-08-29 22:06 UTC

Observed FT8 message patterns

Attributed sample
1,411 messages
Active dates
12 UTC dates
Estimated median S/N
+3 dB
Estimated 10th-90th percentile
-9 to +12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 117, strong (≥ -8 dB) 1,262.

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 UA2KU

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 · 45 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
510 km (approx.)
Last such locator decoded
2026-08-29 21:32 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 UTCBandUA2KU S/NCounterpartCounterpart S/NMsgsCapture
08-29 22:06 40m -20 / - RI1FJL - / -13 2 Partial capture
08-29 22:05 40m -18 / - RK7D +8 / - 2 ✓ Closing observed
08-29 21:58 40m - / -13 R2BQM +5 / - 2 ✓ Closing fragment
08-29 21:51 40m - / +5 RA9SOZ -6 / - 2 ✓ Closing fragment
08-29 21:43 40m - / -8 F1PBZ -5 / - 4 ✓ Closing fragment
08-29 21:42 40m - / - UA6LIK -12 / - 2 ✓ Closing fragment
08-29 21:34 80m +12 / -11 YO5QDN +3 / -10 5 ✓ Full exchange observed
08-29 21:32 80m +10 / - DL1EDR - / -7 2 ✓ Closing fragment
08-29 21:32 80m +7 / +1 G8OO -16 / -10 7 ✓ Full exchange observed
08-29 21:29 80m +12 / - DO8PAT - / -19 2 ✓ Closing fragment
08-29 21:26 80m +14 / - R2DKL -18 / -15 3 ✓ Closing observed
08-29 21:23 80m +12 / -8 R9DZ -16 / -9 8 ✓ Full exchange observed
08-29 21:22 80m +11 / - UN8DSW - / -18 3 ✓ Closing fragment
08-29 21:17 80m +8 / - ES1BH -11 / -3 13 Partial capture
08-29 21:11 80m -2 / -16 DM2MAT -11 / -15 5 ✓ Full exchange observed
08-29 21:10 80m +11 / -2 DH4RK -22 / -18 3 ✓ Full exchange observed
08-29 21:08 80m +5 / - LA8OKA -7 / -4 3 ✓ Full exchange observed
08-29 21:08 80m +2 / +2 ON1BMM -5 / -6 4 ✓ Full exchange observed
08-29 21:06 80m +6 / - R3YCI +7 / -9 4 ✓ Closing observed
08-29 21:04 80m +4 / - SV9MBH - / -17 3 ✓ Closing fragment
08-29 21:03 80m +4 / +9 RU3NCW -8 / -13 4 ✓ Full exchange observed
08-29 21:01 80m +4 / -13 EC5M -20 / -16 3 ✓ Full exchange observed
08-29 20:59 80m +5 / - DO7BE -9 / -7 3 ✓ Closing observed
08-29 20:59 80m +8 / +6 RN3TT +10 / -2 4 ✓ Full exchange observed
08-29 20:57 80m +5 / - LZ6C +9 / -8 4 ✓ Full exchange observed
08-29 20:56 80m +8 / +6 DO1KF -6 / -16 3 Partial capture
08-29 20:55 80m +1 / - OT8T - / -8 4 ✓ Closing fragment
08-29 20:54 80m 0 / - ON5VKE - / -7 2 Partial capture
08-29 20:52 80m +2 / -5 RA5CM +6 / -7 3 ✓ Full exchange observed
08-29 20:51 80m +2 / -13 RK9DO -8 / -7 4 ✓ Full exchange observed
08-29 20:50 80m -2 / - SN9AWOO - / -7 2 Partial capture
08-29 20:49 80m -4 / -6 EA1CQ -9 / -10 5 ✓ Full exchange observed
08-29 20:43 80m +6 / -6 R9FFJ -10 / -11 3 ✓ Full exchange observed
08-29 20:42 80m +12 / - EA3EW - / -15 2 ✓ Closing fragment
08-29 20:26 80m +7 / - <...> - / -4 18 Partial capture
08-29 20:08 80m - / - RZ3DW +9 / - 4 Partial capture
08-29 20:07 80m +10 / -10 RA3X +5 / -7 4 ✓ Full exchange observed
08-29 19:55 80m +6 / - UA0ACG - / -17 2 ✓ Closing fragment
08-29 19:53 80m +6 / -5 R8CC -12 / -9 4 ✓ Full exchange observed
08-29 19:52 80m +8 / - DL7UKM - / -11 2 ✓ Closing fragment
08-29 19:51 80m +6 / - ON6PL - / -10 2 ✓ Closing fragment
08-29 19:51 80m +10 / -6 RW3DW +2 / -3 9 ✓ Full exchange observed
08-29 19:50 80m +14 / -3 R7OF +5 / -7 5 ✓ Full exchange observed
08-29 19:49 80m +6 / - TA7D - / -10 2 ✓ Closing fragment
08-29 19:47 80m +6 / - R4AFR - / -15 2 ✓ Closing fragment
08-16 22:29 40m -6 / - RY0AAN/P - / -16 2 ✓ Closing fragment
08-16 22:28 40m -6 / - GB64MOD - / -19 2 Partial capture
08-16 22:26 40m -8 / - BH8NNU - / -15 2 Partial capture
08-16 22:24 40m -14 / - EI3KYB/P - / -20 2 Partial capture
08-16 22:21 40m -8 / - DL9KM -20 / -4 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
214300 -13 1605  UA2KU UA6LIK 73
214330  -2 2785  UA2KU F1PBZ -08
214400  -1 1116  UA2KU TC30AGU R+04
214400  -4 2784  UA2KU F1PBZ -08 (x3)
215145  -5 1230  UA2KU RA9SOZ R+05 (x2)
215815  +5 2139  UA2KU R2BQM R-13 (x2)
220330 -18 2113  9J2FI UA2KU RR73
220500 -18 2113  RK7D UA2KU RR73
220515  +8 2959  UA2KU RK7D 73
220615 -23 1417  RI1FJL UA2KU -13 (x2)
80m
UTC    dB Audio  Message
213200 +17 1087  CQ UA2KU KO04
213215 -16 1992  UA2KU G8OO JO02
213230 +12 1086  DL1EDR UA2KU -07
213245 -16 1992  UA2KU G8OO JO02
213300  +7 1086  DL1EDR UA2KU RR73
213315 -18 1992  UA2KU G8OO JO02
213330  +6 1086  G8OO UA2KU -10
213345 -16 1992  UA2KU G8OO R+01
213400  +8 1087  G8OO UA2KU RR73
213415 -13 1993  UA2KU G8OO 73
213445  +6 1378  UA2KU YO5QDN KN17 (x2)
213530 +11 1086  YO5QDN UA2KU -10
213545  -2 1378  UA2KU YO5QDN R-11
213600 +14 1086  YO5QDN UA2KU RR73

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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