K4ACJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving K4ACJ, decoded by SO8OO in southeastern Poland. 167 related FT8 messages, 1 CQ messages, observed on 40m, 20m, across 19 UTC dates. Heard between 2026-05-04 and 2026-07-31.

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

167

Related messages

CQ messages

UTC dates heard

-4 dB

Mean decoder S/N

Bands

20m 40m

First seen: 2026-05-04
Last seen: 2026-07-31 19:05 UTC

Frequent QSO partners observed at SO8OO

Stations K4ACJ worked most often, as logged from our receiver:

EA4T · Spain ×3 PD0WC · Netherlands G8GRG · England R2AL · European Russia W2NTN · United States HB9EFK · Switzerland DL9CE · Fed. Rep. of Germany RN6MA · European Russia IQ4JO · Italy R3KFA · European Russia DL3RAJ · Fed. Rep. of Germany R5AV · European Russia

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 UTC	Band	K4ACJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-31 21:03	20m	- / -8	EA4T	-18 / -	4	✓ Closing fragment
07-31 20:51	20m	- / -25	PD0WC	+8 / -	5	✓ Closing fragment
07-28 13:49	20m	- / -	G3MXH	-4 / -	2	Partial capture
07-25 18:30	20m	- / -	G8FVE	-10 / -	2	Partial capture
07-23 18:18	20m	- / -10	EA4T	-19 / -	3	✓ Closing fragment
07-18 02:30	40m	- / -17	IQ4JO	-10 / -	2	✓ Closing fragment
07-18 02:08	20m	- / -7	R2AL	-4 / -	3	✓ Closing fragment
07-18 02:07	20m	- / -11	RN6MA	-16 / -	2	✓ Closing fragment
07-18 02:04	20m	- / -	R3KFA	-17 / -	2	✓ Closing fragment
07-18 02:03	20m	- / -10	R5AV	-18 / -	2	✓ Closing fragment
07-06 23:04	20m	- / -13	I4RHP/5	-8 / -	2	Partial capture
06-28 02:00	40m	- / -10	HB9EFK	+2 / -	2	✓ Closing fragment
06-27 22:03	20m	- / -	DL1R	-11 / -	6	Partial capture
06-26 22:16	20m	- / -19	G8GRG	+1 / -	4	✓ Closing fragment
06-20 00:26	40m	- / -13	F5OYA/P	0 / -	38	Partial capture
06-07 22:29	20m	- / -6	W2NTN	-11 / -	3	✓ Closing fragment
06-07 22:27	20m	- / -14	DL9CE	-10 / -	2	✓ Closing fragment
06-07 21:47	20m	- / -	AJ1I	+4 / -	2	✓ Closing fragment
06-04 00:45	20m	- / -8	DL3RAJ	-7 / -	3	✓ Closing fragment
06-04 00:25	20m	-13 / -	W5WNR	- / -6	3	Partial capture
06-03 23:58	20m	-10 / -	AB8KP	- / -	2	Partial capture
05-26 20:27	20m	- / -12	F4JMX	0 / -	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
181915 -17 1378  K4ACJ EA4T RR73 (x2)
183030  -7  873  K4ACJ G8FVE IO91 (x2)
134915 -13 2085  K4ACJ G3MXH JO02 (x2)
205115  +8  478  K4ACJ PD0WC JO21 (x5)
210345 -18 1376  K4ACJ EA4T -08 (x4)

40m

UTC    dB Audio  Message
004200  +5 2917  K4ACJ F5OYA/P R-13 (x9)
004615 +11 2894  K4ACJ IQ4JO JN63
020045  -1 2840  K4ACJ HB9EFK -10 (x2)
020715  -3 2733  K4ACJ IQ4JO JN63 (x3)

Decoder S/N history by band

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