UW5KW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KO30

Receiver-side FT8 activity involving UW5KW, decoded by SO8OO in southeastern Poland. 3,436 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 67 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.

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 3,436 FT8 messages attributed to UW5KW as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (66%), followed by 80 m (25%) and 20 m (9%). Most decodes (74%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was 0 dB.

Overview

3,436
Messages attributed
67
UTC dates decoded
351
Active 15-min windows
0 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-09-08 19:26 UTC

Observed FT8 message patterns

Attributed sample
3,436 messages
Active dates
67 UTC dates
Estimated median S/N
0 dB
Estimated 10th-90th percentile
-13 to +14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 220, moderate (-15 to -9 dB) 570, strong (≥ -8 dB) 2,646.

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 UW5KW

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
KO30 · 2,272 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
376 km (approx.)
Last such locator decoded
2026-09-08 19:26 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 UTCBandUW5KW S/NCounterpartCounterpart S/NMsgsCapture
09-08 19:25 80m +12 / - 3Z100PKP - / -1 3 Partial capture
09-08 18:57 40m -14 / - BG7BVP - / - 2 Partial capture
09-07 19:18 40m -8 / +6 HG0NPJ +2 / +3 5 ✓ Full exchange observed
09-07 19:16 40m -12 / - GX0WKQ - / -14 3 ✓ Closing fragment
09-07 19:10 40m -1 / - EG3PDA - / -12 2 ✓ Closing fragment
09-07 19:06 40m -6 / - OL900LTV - / -16 2 Partial capture
09-07 19:04 40m -1 / -12 OZ/KD0NDU +3 / -8 2 Partial capture
09-07 19:03 40m +4 / - OR1A - / -13 2 ✓ Closing fragment
09-07 18:59 40m -14 / -3 SN1A -2 / -3 5 ✓ Full exchange observed
09-07 18:58 40m -7 / - G5MJF - / -18 3 ✓ Closing fragment
09-07 18:56 40m - / -2 EA6ZS -6 / - 2 ✓ Closing fragment
09-07 18:27 40m -2 / -1 ER1BF -2 / -3 5 ✓ Full exchange observed
09-07 18:12 40m -3 / - CT4VB - / - 4 Partial capture
09-07 18:10 40m -3 / -13 EB1ESK -16 / - 2 ✓ Closing observed
09-07 17:44 40m -2 / - M1DBX - / -16 2 ✓ Closing fragment
09-07 17:37 40m -2 / - HF100PKP - / -18 2 Partial capture
09-07 17:35 40m 0 / - GW0TRZ - / -14 2 ✓ Closing fragment
09-07 17:32 40m 0 / - OH8KTX -21 / -4 4 ✓ Closing observed
09-07 05:21 40m +1 / - K1RZ - / - 4 Partial capture
09-07 05:19 40m +5 / - NQ9N - / - 2 Partial capture
09-06 17:51 80m - / +1 UY5BF +20 / - 2 Partial capture
09-06 17:49 80m +14 / - SP100PKP - / - 2 Partial capture
09-06 17:46 80m +11 / -5 9A6NCC +5 / -4 5 ✓ Full exchange observed
09-06 17:45 80m +18 / - TA2VTS - / -14 2 ✓ Closing fragment
09-06 17:43 80m +14 / +2 OH3CD -12 / -12 5 ✓ Full exchange observed
09-06 17:42 80m +13 / - SQ9AWN +8 / -2 5 ✓ Full exchange observed
09-06 17:41 80m +9 / - DL0AA - / - 2 Partial capture
09-06 17:39 80m +12 / 0 OH1LA -9 / -10 5 ✓ Full exchange observed
09-06 15:47 80m +13 / - OE1AVO +4 / -19 5 ✓ Closing observed
09-06 15:43 40m +1 / -7 SV2PII -16 / -6 6 ✓ Full exchange observed
09-06 15:40 40m -9 / - UN9GAM - / -15 2 Partial capture
09-06 15:38 40m -3 / -2 HF100PKP -6 / -11 3 Partial capture
09-06 04:43 40m -1 / - LZ3AI - / -16 3 ✓ Closing fragment
09-06 04:33 40m +3 / - WD4OBP - / -19 4 ✓ Closing fragment
09-06 04:29 40m +5 / -17 IW2IDB -11 / - 4 ✓ Closing observed
09-06 03:58 40m - / -12 K0SRL -10 / - 2 ✓ Closing fragment
09-06 03:30 80m +19 / - K1ZM - / - 6 Partial capture
09-05 04:08 80m +8 / - K1ZM - / - 5 Partial capture
09-04 20:24 80m +8 / -10 YU5DR -2 / -7 5 ✓ Full exchange observed
09-04 20:16 80m +2 / -6 DO4HHK -17 / -19 4 ✓ Full exchange observed
09-04 20:08 80m +10 / -12 OK1DBE -10 / -10 4 ✓ Full exchange observed
09-04 20:05 80m +16 / - PH7GD -15 / -22 6 ✓ Closing observed
09-04 20:00 80m +8 / - BA5AN - / - 5 Partial capture
09-04 19:59 80m +6 / -10 SP7SZJ +6 / -1 5 ✓ Full exchange observed
09-04 19:56 80m +16 / -5 SN100PKP -8 / -9 3 Partial capture
09-04 19:51 80m +15 / - DO1TEM - / -17 3 ✓ Closing fragment
09-04 19:44 80m +12 / - ON6DL -13 / -19 4 Partial capture
09-04 19:43 80m +14 / -4 9A9N +2 / -9 5 ✓ Full exchange observed
09-04 19:41 80m +12 / +10 YL3AQI -6 / -3 6 ✓ Full exchange observed
09-04 19:39 80m +12 / - OL900LTV - / -10 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m
UTC    dB Audio  Message
174545 +20  854  TA2VTS UW5KW -14 (x2)
174645  +3 1779  9A6NCC UW5KW KO30
174700  +3 1780  UW5KW 9A6NCC -05
174715 +17 1780  9A6NCC UW5KW R-04
174730  +7 1780  UW5KW 9A6NCC RR73
174745 +13 1779  9A6NCC UW5KW 73
174815  +4  693  UY5BF UW5KW KO30
174900 +15 1152  SP100PKP UW5KW KO30 (x2)
175100 +20  693  UW5KW UY5BF +01 (x2)
192545 +12 2204  3Z100PKP UW5KW KO30 (x3)
40m
UTC    dB Audio  Message
191830 -12 2059  HG0NPJ UW5KW R+03
191845  +4 2059  UW5KW HG0NPJ RR73
191900 -10 2058  HG0NPJ UW5KW 73
185700 -17 2745  BG7BVP UW5KW KO30 (x2)
185900 -11 2745  CQ UW5KW KO30 (x2)
190230 -12 2744  BG7BVP UW5KW RR73
190445 -14 2025  UW5KW DL4RY 73
190500 -13 2743  CQ UW5KW KO30 (x2)
190630  -9 2742  G4MHJ UW5KW -20
191130  -5 2742  CQ UW5KW KO30 (x2)
192100  -5 2741  D44TWO UW5KW R-26
20m
UTC    dB Audio  Message
182915  -4  905  UW5KW G3EFG RRR
184030  -2  684  UW5KW DF2SL JN58 (x2)
184600  +2 1245  UW5KW EA7L IM86 (x3)
184800  +9 2294  UW5KW G4SJG R-17 (x2)
185030 -14 2295  UW5KW DC5BO JO41 (x3)
190515 -17 1962  UW5KW M0ITJ RR73
165200  +8 2771  UW5KW R6YBU LN04 (x3)
10m
UTC    dB Audio  Message
174945  -2 2087  UW5KW DO1DMR -15
181015 -20 1628  UW5KW F4VTR JN25
181015 -10  700  UW5KW DO1BOC JO44 (x3)
181745 -14 1621  UW5KW S59MA JN76 (x3)
182115 -21 1863  UW5KW M8FQT IO93 (x3)
183230  -6  909  UW5KW DF5KX +06 (x2)
183430 -13  707  UW5KW DF9HT/P +13 (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.

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