KS4RF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Locator transmitted in a decoded message: EM72

Receiver-side FT8 activity involving KS4RF, decoded by SO8OO in southeastern Poland. 191 related FT8 messages, observed on 80m, 40m, 20m, across 26 UTC dates. Heard between 2026-05-28 and 2026-08-20.

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

191
Related messages
0
CQ messages
26
UTC dates heard
-7 dB
Mean decoder S/N

Bands

First seen: 2026-05-28
Last seen: 2026-08-20 22:11 UTC

Activity Heatmap

Locator transmitted by KS4RF

Approximate centre of EM72, decoded 2026-08-20 23:32 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 UTCBandKS4RF S/NCounterpartCounterpart S/NMsgsCapture
08-21 00:10 20m - / -18 YO4NF -5 / - 2 Partial capture
08-20 23:34 20m - / -15 YO4NF +17 / - 2 Partial capture
08-20 23:32 20m -6 / - 8Z1IT -4 / -8 6 ✓ Closing observed
08-20 23:05 20m - / +5 YV6BXN -12 / - 2 ✓ Closing fragment
08-20 04:05 40m - / - YO6QDY -8 / - 4 Partial capture
08-20 04:03 40m -15 / - EB3JT - / -14 2 Partial capture
08-20 04:01 40m - / - PC2F -4 / - 5 Partial capture
08-20 03:55 40m -14 / - TN8GD - / -12 5 Partial capture
08-20 03:54 40m - / - YO6QDY -8 / - 6 Partial capture
08-20 03:53 40m - / - YO9IAB +11 / - 4 Partial capture
08-20 03:49 40m -17 / -8 YO4GIY -8 / -23 9 ✓ Full exchange observed
08-20 03:47 40m - / - YO6QDY -14 / - 2 Partial capture
08-20 03:46 40m - / - SV2AOB -2 / - 2 Partial capture
08-20 03:45 40m -8 / - NE5TX - / - 2 ✓ Closing fragment
08-20 03:42 40m -6 / - OM8GT - / -17 4 Partial capture
08-20 03:40 40m - / -11 G4RYE +3 / - 5 Partial capture
08-20 03:39 40m -8 / - OM8GT - / - 2 Partial capture
08-15 00:59 20m - / - IW2MYH -23 / - 3 Partial capture
08-15 00:57 20m - / -6 A71QQ -16 / - 2 ✓ Closing fragment
08-12 19:48 20m - / -10 LZ2VQ -10 / - 2 Partial capture
08-12 19:47 20m - / -16 LY7T -14 / - 2 ✓ Closing fragment
08-12 19:44 20m - / - R6FFB +1 / - 2 Partial capture
08-09 21:59 20m - / - RA3ZH -5 / - 3 Partial capture
08-06 02:36 40m - / - F5RRS -18 / - 2 Partial capture
08-06 02:26 20m - / -6 DL4GCJ -15 / - 3 Partial capture
08-04 01:54 40m - / - EB3JT -8 / - 2 Partial capture
08-04 01:53 40m - / - RN6HK -8 / - 2 Partial capture
08-02 04:28 40m - / - YO9IAB -1 / - 8 Partial capture
08-02 04:19 20m - / - RV3QI -2 / - 2 ✓ Closing fragment
08-02 04:09 20m -6 / - IC8TEM - / -5 2 Partial capture
08-02 04:08 20m - / - RA6AVP -14 / - 6 Partial capture
08-02 04:06 20m -13 / - OM0RX - / - 3 Partial capture
08-02 04:04 20m - / -16 R2BQM -18 / - 2 Partial capture
08-02 04:03 20m -14 / - UT3RS - / +8 2 ✓ Closing fragment
08-02 04:02 20m -12 / - HK3W - / -7 2 ✓ Closing fragment
08-02 04:01 20m - / - RA6AVP -14 / - 4 Partial capture
08-02 04:01 20m -9 / - SP7IIT - / - 2 ✓ Closing fragment
07-31 01:28 40m - / - F5RRS -15 / - 4 Partial capture
07-30 09:08 20m - / - PD1ADA -19 / - 3 Partial capture
07-14 04:32 40m - / - OZ7FOC -18 / - 2 ✓ Closing fragment
07-14 04:28 40m - / -13 DL3OCF -16 / - 2 Partial capture
07-14 04:24 40m - / -5 OE9DAI -15 / - 2 Partial capture
07-14 00:57 40m - / - F5RRS -18 / - 3 Partial capture
07-14 00:57 40m - / - F4BYA +7 / - 2 Partial capture
07-13 02:20 20m - / - R2AL +7 / - 3 Partial capture
07-13 02:19 20m - / - R6FY -17 / - 2 Partial capture
07-04 02:07 40m - / - A71XX -11 / - 3 Partial capture
07-04 01:57 20m - / -3 VP2MAA -4 / - 2 ✓ Closing fragment
07-03 02:19 40m - / -18 R2FC 0 / - 5 ✓ Closing fragment
07-03 02:04 20m - / - SV5BYP -19 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
010100 -21 1967  KS4RF IW2MYH JN45 (x2)
230515 -10 1464  KS4RF YV6BXN +05 (x2)
230615  -6 1464  KS4RF YO4NF -18
233230  -4  547  8Z1IT KS4RF EM72 (x3)
233345  -4  549  KS4RF 8Z1IT RR73
233400  -6  546  8Z1IT KS4RF R-08
233415  -3  549  KS4RF 8Z1IT RR73
233445 +22  546  KS4RF YO4NF -15 (x4)
40m
UTC    dB Audio  Message
035715 -14  921  TN8GD KS4RF EM72 (x4)
040130  -4  921  KS4RF PC2F JO22 (x5)
040345 -15  921  EB3JT KS4RF -14 (x2)
040500  -8 1601  KS4RF YO6QDY KN26 (x4)
80m
UTC    dB Audio  Message
021415 -18 1530  LZ370TL KS4RF EM72
021430  +5 1530  KS4RF LZ370TL -12
015215 -20  737  KS4RF ZS1J -06

Decoder S/N history by band

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