KO4XJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving KO4XJ, decoded by SO8OO in southeastern Poland. 222 related FT8 messages, 26 CQ messages, observed on 40m, 20m, across 24 UTC dates. Heard between 2026-05-04 and 2026-08-02.

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

222
Related messages
26
CQ messages
24
UTC dates heard
-5 dB
Mean decoder S/N

Bands

First seen: 2026-05-04
Last seen: 2026-08-02 03:22 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 UTCBandKO4XJ S/NCounterpartCounterpart S/NMsgsCapture
08-02 05:17 20m - / -18 IT9CCB 0 / - 2 ✓ Closing fragment
08-01 00:26 20m - / - K1CXS -16 / - 2 ✓ Closing fragment
07-29 03:59 40m - / -17 F1PBZ -10 / - 2 ✓ Closing fragment
07-25 03:53 20m - / -15 4L7T -9 / - 2 Partial capture
07-12 04:23 40m - / -4 HB9DGK -1 / - 2 ✓ Closing fragment
06-19 05:19 20m - / - IK2TCV -20 / - 3 Partial capture
06-19 05:15 20m - / -11 9A5AR -6 / - 2 Partial capture
06-19 05:03 20m - / -25 EA3PV -7 / - 4 Partial capture
06-19 04:45 20m - / -18 F4LNM +10 / - 5 ✓ Closing fragment
06-19 02:34 20m - / -9 5Z4VJ -1 / - 2 ✓ Closing fragment
06-17 03:00 40m - / -8 Z62NS -1 / - 3 ✓ Closing fragment
06-17 02:58 40m - / -16 PD4RJ -14 / - 2 Partial capture
06-17 02:53 20m -4 / - N7DSB - / -4 2 ✓ Closing fragment
06-17 02:51 20m -6 / - OK1UOZ - / -6 2 ✓ Closing fragment
06-17 02:51 20m -4 / -7 WF1B +4 / -13 5 ✓ Full exchange observed
06-17 02:44 20m 0 / - IU7VLD - / -16 2 Partial capture
06-17 02:43 20m - / - KR5DX -16 / - 2 Partial capture
06-17 02:41 20m -3 / - R5AV - / -8 2 ✓ Closing fragment
06-17 01:45 20m -19 / - HA1BF -20 / -5 2 ✓ Closing observed
06-12 02:36 20m - / -17 UA6YW +10 / - 4 ✓ Closing fragment
06-12 02:17 20m -4 / - G3TKT - / -7 2 ✓ Closing fragment
06-07 02:20 20m - / - WB3FME -21 / - 2 Partial capture
06-07 02:12 20m -8 / - AE1G - / -13 2 ✓ Closing fragment
06-07 02:07 20m -6 / -14 SV2FNT +10 / -8 4 ✓ Full exchange observed
06-07 02:07 20m -7 / - PD9OH - / -19 2 ✓ Closing fragment
06-06 02:11 40m - / - M0ICL -4 / - 2 Partial capture
06-06 02:08 40m - / -7 HB9EFK +4 / - 2 ✓ Closing fragment
06-06 01:41 20m - / -10 HZ1TT -7 / - 3 ✓ Closing fragment
06-04 02:51 40m - / -14 OZ1KEF +13 / - 2 ✓ Closing fragment
06-04 02:42 40m - / -11 DL7BO +12 / - 2 ✓ Closing fragment
06-03 02:46 40m - / - HB9ZHK -13 / - 2 Partial capture
06-03 02:38 40m - / -15 EI2IXB 0 / - 3 ✓ Closing fragment
06-03 02:26 40m - / -1 NX4AC -9 / - 2 ✓ Closing fragment
06-03 02:24 40m - / +1 K3LL -9 / - 2 Partial capture
06-03 02:19 40m - / -19 HB9DVO +10 / - 2 Partial capture
06-03 02:19 40m - / - YO3OBB -19 / - 2 Partial capture
06-03 02:18 40m - / - HB9ZHK -8 / - 2 Partial capture
06-01 05:52 40m - / - ON7DJ -6 / - 2 Partial capture
06-01 05:42 40m - / -17 DH1JG +4 / - 6 ✓ Closing fragment
06-01 05:33 40m - / -7 F8NHF +3 / - 3 ✓ Closing fragment
06-01 05:29 40m - / -6 F4LWD -6 / - 2 Partial capture
06-01 05:22 40m - / -10 F4LNM -7 / - 3 ✓ Closing fragment
06-01 05:20 40m - / -5 ON7HM -14 / - 6 ✓ Closing fragment
06-01 05:18 40m - / -12 ON6AA -1 / - 3 ✓ Closing fragment
05-31 01:27 40m - / - W3HH -13 / - 3 Partial capture
05-30 21:31 20m - / -11 W1WCI -14 / - 10 Partial capture
05-30 20:44 20m - / -8 KB1G -10 / - 2 Partial capture
05-28 23:35 20m - / - VE3GLN +3 / - 12 Partial capture
05-28 23:32 20m - / -5 AH2O -6 / - 3 ✓ Closing fragment
05-28 22:16 20m - / -16 W1WCI -5 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
050745  -2  828  KO4XJ EA1SAL IN70
051545  -2 2916  KO4XJ 9A5AR -11 (x2)
051915 -22 1728  KO4XJ IK2TCV JN45 (x2)
051945  -3 2916  KO4XJ 9A5AR RR73
052045 -19 1728  KO4XJ IK2TCV JN45
031245  -8  505  KO4XJ OE5CCN RR73
035345  -7  416  KO4XJ 4L7T -15 (x2)
002645 -17 2329  KO4XJ K1CXS FN33 (x2)
051745  +4 2739  KO4XJ IT9CCB R-18 (x2)
052245  -9 2739  KO4XJ PA3CPS JO32
40m
UTC    dB Audio  Message
020845  +3 2319  KO4XJ HB9EFK -07 (x2)
021145  -5 1798  KO4XJ M0ICL JO01 (x2)
025830 -17 1340  KO4XJ PD4RJ -16 (x2)
030030  -1  739  KO4XJ Z62NS -08 (x3)
042300  -1  428  KO4XJ HB9DGK -04 (x2)
035915  -9 2688  KO4XJ F1PBZ -17 (x2)
040645 -24 2084  KO4XJ DK5ON -10
041145 -20 1697  KO4XJ F4FCE JN06

Decoder S/N history by band

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