K4SJR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving K4SJR, decoded by SO8OO in southeastern Poland. 307 related FT8 messages, 19 CQ messages, observed on 40m, 20m, 10m, across 21 UTC dates. Heard between 2026-05-27 and 2026-08-23.

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

307
Related messages
19
CQ messages
21
UTC dates heard
-8 dB
Mean decoder S/N

Bands

First seen: 2026-05-27
Last seen: 2026-08-23 22:48 UTC

Activity Heatmap

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 UTCBandK4SJR S/NCounterpartCounterpart S/NMsgsCapture
08-24 00:35 40m - / - G1LQT -8 / - 2 Partial capture
08-24 00:35 40m - / - SP1ADT -1 / - 2 Partial capture
08-24 00:34 40m - / - F4BYA +8 / - 4 Partial capture
08-24 00:31 40m - / - IK4LZH +6 / - 4 Partial capture
08-24 00:28 40m - / -13 F5HNQ -3 / - 3 ✓ Closing fragment
08-23 01:30 40m - / - PF26GP -7 / - 5 ✓ Closing fragment
08-23 01:29 40m - / - RV6F -8 / - 5 Partial capture
08-23 01:29 40m - / - IZ8DBJ 0 / - 3 Partial capture
08-23 01:14 40m - / - IK4LZH +2 / - 4 Partial capture
08-23 01:12 40m - / -15 R7DX +12 / - 3 ✓ Closing fragment
08-23 01:06 40m - / -23 DK7UY -4 / - 6 ✓ Closing fragment
08-23 01:03 40m - / - IZ8DBJ -1 / - 3 Partial capture
08-23 00:59 40m - / -12 EA5HM -15 / - 4 ✓ Closing fragment
08-23 00:57 40m - / -23 UA3GDJ 0 / - 3 ✓ Closing fragment
08-23 00:57 40m - / -18 MM0KQC -15 / - 3 Partial capture
08-23 00:53 40m - / - IZ8DBJ +5 / - 3 Partial capture
08-23 00:51 40m - / - LZ3CB +4 / - 3 Partial capture
08-23 00:48 40m - / - IZ8DBJ +10 / - 3 Partial capture
08-22 21:34 20m - / - KJ4KFJ -24 / - 2 Partial capture
08-22 21:21 20m - / -23 F5NNN -8 / - 3 ✓ Closing fragment
08-21 01:12 40m - / - EA5HM -5 / - 2 Partial capture
08-08 20:40 20m - / -16 F5RRS -4 / - 3 ✓ Closing fragment
08-02 03:49 40m - / - PB0AKY -22 / - 2 Partial capture
08-02 03:48 40m - / -15 DH5BM -17 / - 3 ✓ Closing fragment
07-31 14:47 20m - / +3 F1ODM -19 / - 3 ✓ Closing fragment
07-31 14:43 20m - / -2 F1ODM -20 / - 3 Partial capture
07-31 02:33 40m - / - SV1BLD -2 / - 2 Partial capture
07-31 02:33 40m - / - DG5PW -24 / - 2 Partial capture
07-28 01:41 40m - / - OO0O -10 / - 2 Partial capture
07-28 01:26 40m - / -16 UA3SNB -16 / - 2 Partial capture
07-28 01:09 40m - / - DH5BM -20 / - 7 Partial capture
07-24 02:45 40m - / - R7DX +4 / - 2 Partial capture
07-22 04:25 40m - / -14 DG4SCG -10 / - 2 ✓ Closing fragment
07-22 04:23 40m - / -9 IV3GOW -17 / - 2 ✓ Closing fragment
07-22 04:11 40m - / - IU4DTV -15 / - 3 ✓ Closing fragment
07-22 04:05 40m - / -10 DJ0MAB -15 / - 4 Partial capture
07-22 04:01 40m - / -10 DL8WEM -4 / - 3 ✓ Closing fragment
07-22 03:58 40m - / -12 DL8TV +2 / - 4 Partial capture
07-22 03:57 40m - / - DL6UJ -18 / - 4 Partial capture
07-18 02:38 40m - / -11 UT7UJ -6 / - 2 Partial capture
07-18 02:21 40m - / -19 UT7UJ -6 / - 3 Partial capture
07-18 02:07 40m - / -11 UT7UJ -3 / - 5 Partial capture
07-18 01:56 40m - / -10 UT7UJ -7 / - 3 Partial capture
07-18 01:54 40m - / - IK3SSW -4 / - 4 Partial capture
07-07 02:09 40m - / - SV5BYP -22 / - 2 Partial capture
07-06 00:56 40m - / -23 <...> -20 / - 2 Partial capture
07-06 00:54 40m - / - PI4DX +1 / - 3 Partial capture
07-06 00:53 40m - / - F4FPR -18 / - 2 Partial capture
07-06 00:39 40m - / -16 EC3A -22 / - 2 Partial capture
07-04 01:41 40m - / - DK7ZT -14 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
003115  +3  439  K4SJR IK4LZH JN54 (x4)
003415  +6 2881  K4SJR F4BYA JN19 (x3)
003545  -2 1640  K4SJR SP1ADT JO83
003545  -6 1303  K4SJR G1LQT RRR
003545 +11 2881  K4SJR F4BYA JN19
003615  -9 1303  K4SJR G1LQT RRR
003615  +0 1640  K4SJR SP1ADT JO83
003800  -4 1069  K4SJR EB1LA IN73
004430  -2 1639  K4SJR UA6CE -20
004800 -20 1639  K4SJR IN3IZQ JN56
20m
UTC    dB Audio  Message
144800 -15 1675  K4SJR F1ODM +03 (x2)
204045  -5 2021  K4SJR F5RRS JN36 (x3)
211745  +2  279  K4SJR EA5ITW -14 (x2)
212100  -5 1089  K4SJR F5NNN IN94
212130 -13  329  K4SJR N1NRL FN41
212130  -7 1089  K4SJR F5NNN R-23 (x2)
212630 -12  330  K4SJR N1NRL FN41
213030 -12  641  K4SJR R2AL KO85
213400 -23 1484  K4SJR KJ4KFJ EN74 (x2)
10m
UTC    dB Audio  Message
180030  -7 1001  K4SJR PY4ZDC -14 (x3)

Decoder S/N history by band

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