KS4S — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Locator transmitted in a decoded message: FM04

Receiver-side FT8 activity involving KS4S, decoded by SO8OO in southeastern Poland. 148 related FT8 messages, 1 CQ messages, observed on 60m, 40m, 20m, across 35 UTC dates. Heard between 2026-05-24 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

148

Related messages

CQ messages

UTC dates heard

-9 dB

Mean decoder S/N

Bands

20m 40m 60m

First seen: 2026-05-24
Last seen: 2026-08-23 00:39 UTC

Frequent QSO partners observed at SO8OO

Stations KS4S worked most often, as logged from our receiver:

IK4LZH · Italy ×2 W4DXM · United States IU5HIU · Italy ON1AEY · Belgium DL2RPN · Fed. Rep. of Germany W2NTV · United States IU1TLG · Italy GE0KUC · England K0NEB · United States F1ROA · France RU3SD · European Russia LX1TI · Luxembourg

Activity Heatmap

Locator transmitted by KS4S

Approximate centre of FM04, decoded 2026-08-23 02:39 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 UTC	Band	KS4S S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 02:37	20m	-20 / -10	ON3KJU	-1 / -	9	Partial capture
08-23 02:32	20m	-21 / -	WC9I	- / -	5	Partial capture
08-23 02:31	20m	-20 / -	AB2OQ	- / -	2	Partial capture
08-20 23:20	20m	-22 / -	AE4X	- / -	2	Partial capture
08-20 23:16	20m	-20 / -	W0OVX	- / -13	3	Partial capture
08-20 23:15	20m	-17 / -	GE0KUC	- / -1	3	✓ Closing fragment
08-20 21:01	20m	-24 / -	KJ5PWR	- / -12	2	Partial capture
08-20 02:08	60m	- / -18	OJ0YL	+2 / -	2	Partial capture
08-20 01:40	60m	- / -	F5PBG	-14 / -	3	Partial capture
08-20 01:20	40m	- / -14	LZ2IP	-1 / -	8	Partial capture
08-19 23:47	40m	- / -14	IU5HIU	-10 / -	2	✓ Closing fragment
08-15 03:27	20m	- / -12	SV5BYP	-13 / -	4	✓ Closing fragment
08-15 03:19	20m	- / +1	5B4AMX	-12 / -	2	✓ Closing fragment
08-10 04:26	40m	- / -	F1HFP	-15 / -	3	Partial capture
08-03 04:48	40m	- / +2	IK2SYK	-14 / -	8	Partial capture
07-24 04:39	40m	- / -17	IK4LZH	0 / -	2	✓ Closing fragment
07-24 04:30	40m	- / +1	LX1TI	-2 / -	2	✓ Closing fragment
07-23 02:23	40m	- / +10	W4DXM	-13 / -	2	✓ Closing fragment
07-21 04:33	40m	- / -20	DL2RPN	-8 / -	3	✓ Closing fragment
07-21 03:48	40m	- / -	PD0RCQ	-16 / -	4	Partial capture
07-17 04:27	40m	- / -17	<...>	-7 / -	5	Partial capture
07-14 04:26	40m	- / -16	YR50NADIA	-11 / -	2	Partial capture
07-12 04:10	40m	- / +2	IU1TLG	-14 / -	3	✓ Closing fragment
07-12 04:09	40m	- / -8	PA1PXL	-16 / -	4	Partial capture
06-25 03:16	20m	- / -18	HB9TIH	-16 / -	3	Partial capture
06-21 04:01	40m	- / -	PA3DZM	-21 / -	4	Partial capture
06-21 03:28	40m	- / -13	IK4LZH	-4 / -	3	✓ Closing fragment
06-20 01:33	40m	-24 / 0	G3TKT	-12 / -5	5	Partial capture
06-18 03:21	20m	- / -15	UR4QWW	+4 / -	3	✓ Closing fragment
06-17 01:03	20m	- / -16	TI5RR	-6 / -	2	✓ Closing fragment
06-16 02:13	20m	-14 / -	W9WWI	- / -	4	Partial capture
06-16 01:53	20m	-6 / -	WF0B	- / -12	4	Partial capture
06-16 01:45	20m	-18 / -3	K5NZV	-22 / -	3	✓ Closing observed
06-04 02:09	40m	-21 / -	AH2EJ	- / -	3	Partial capture
06-04 02:06	40m	- / -5	W1AW/2	-12 / -	2	Partial capture
06-04 01:55	40m	- / -14	G8OO	-13 / -	6	Partial capture
06-03 02:37	20m	-17 / -	<...>	- / +8	9	Partial capture
05-29 00:51	40m	- / -3	W2NTV	-20 / -	2	✓ Closing fragment
05-28 04:45	40m	- / -20	F1ROA	-12 / -	5	✓ Closing fragment
05-28 04:44	40m	- / -13	ON6AA	+2 / -	2	Partial capture
05-27 04:36	40m	- / -	ON7HM	-12 / -	2	Partial capture
05-27 04:35	40m	- / -	ON6AA	-1 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
023130 -20 1365  AB2OQ KS4S FM04
023230 -22 1365  WC9I KS4S FM04 (x5)
023730 -24 1364  ON3KJU KS4S FM04 (x2)
023815  -3  978  KS4S ON3KJU -10
023830 -19 1365  ON3KJU KS4S FM04
023845  -2  978  KS4S ON3KJU -10
023900 -18 1365  ON3KJU KS4S FM04
023915  -2  978  KS4S ON3KJU -10
023930 -18 1365  ON3KJU KS4S FM04
023945  +3  978  KS4S ON3KJU -10

60m

UTC    dB Audio  Message
013315 -20 1329  KS4S 9A4ZM JN86
014015 -14 1333  KS4S F5PBG IN78 (x3)
020800  +4 1256  KS4S OJ0YL -18 (x2)

40m

UTC    dB Audio  Message
045215 -16 1415  KS4S IK2SYK R+02
042600 -14 2289  KS4S F1HFP JN28 (x3)
234800 -13 1209  KS4S GB64MOD -09
234730  -6 1893  KS4S IU5HIU R-14 (x2)
012015  -2 1162  KS4S LZ2IP -14 (x8)

Decoder S/N history by band

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