HK3J — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Colombia

Receiver-side FT8 activity involving HK3J, decoded by SO8OO in southeastern Poland. 118 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-07-23 and 2026-09-20.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 118 FT8 messages attributed to HK3J as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 20 m (36%). Most decodes (92%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

118

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 75 20m · 43

First attributed message: 2026-07-23
Last attributed message: 2026-09-20 01:30 UTC

Observed FT8 message patterns

Attributed sample: 118 messages
Active dates: 9 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -15 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 42, strong (≥ -8 dB) 67.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with HK3J in decoded directed-looking exchanges:

F1PBZ · France ×2 HI3RRR · Dominican Republic ×2 7Z1BQ · Saudi Arabia DG6GU · Fed. Rep. of Germany EI8FH · Ireland IS0KNG · Sardinia IW9HPG · Sicily M9KJY · England OZ1BUR · Denmark P41MTO · Aruba R2BQM · European Russia RC5F · European Russia

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

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	HK3J S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 01:32	40m	- / -	MI7XHT	-18 / -	3	Partial capture
09-20 01:30	40m	- / -	IU8RFW	-1 / -	3	Partial capture
09-20 01:28	40m	-2 / -4	UA4CPM	+10 / -14	6	✓ Full exchange observed
09-20 01:28	40m	-1 / -2	F5NBU	+6 / -8	5	✓ Full exchange observed
09-20 01:25	40m	+6 / -9	EX7CQ	+2 / -17	7	✓ Full exchange observed
09-20 01:24	40m	- / -	IU8RFW	+3 / -	3	Partial capture
09-20 01:24	40m	- / -14	RA3TKS	-4 / -	2	Partial capture
09-20 01:24	40m	- / -	RL9LR	+6 / -	3	Partial capture
09-20 01:23	40m	+7 / -	HB9ELE	- / -16	3	✓ Closing fragment
09-20 01:19	40m	- / -10	RA3TKS	0 / -	3	Partial capture
09-20 01:18	40m	- / -	RQ3P	-4 / -	11	Partial capture
09-20 01:16	40m	+6 / -	EX7CQ	- / -16	13	Partial capture
09-20 01:13	40m	- / -9	R2BQM	+14 / -	4	Partial capture
09-20 01:13	40m	+7 / -13	RN6HK	+12 / -17	8	✓ Full exchange observed
09-20 01:11	40m	+6 / -3	UA6LIK	0 / -18	6	✓ Full exchange observed
09-20 01:02	40m	+5 / -	EX7CQ	- / -15	13	Partial capture
09-02 04:23	40m	-14 / -	EG1PDA	- / -16	3	✓ Closing fragment
09-02 04:16	40m	-14 / -	UT2PC	- / -21	2	✓ Closing fragment
09-02 04:13	40m	-18 / -10	LZ936BA	+2 / -12	2	Partial capture
09-02 04:12	40m	- / -	YO3MIB	-2 / -	2	Partial capture
09-02 04:02	40m	-8 / -	UT7ZM	- / -20	7	Partial capture
09-02 03:59	40m	- / -	UT7ZM	+14 / -	2	Partial capture
09-02 03:54	40m	- / -6	SV1ENM	-9 / -	5	✓ Closing fragment
09-02 03:53	40m	-10 / -	SP9YGD	- / -18	3	✓ Closing fragment
09-02 03:51	40m	- / -	F6FHZ	+1 / -	3	Partial capture
09-02 03:49	40m	-11 / -11	II7MGBT	+3 / -13	3	Partial capture
08-29 03:30	40m	- / -	R7NY	-1 / -	3	Partial capture
08-29 03:29	40m	-12 / -	ES5RY	- / -12	2	✓ Closing fragment
08-24 02:59	40m	- / -5	LZ2CC	-14 / -	2	Partial capture
08-24 02:56	40m	-16 / -	HI3RRR	- / -18	6	✓ Closing fragment
08-24 02:55	40m	- / -8	OZ1KEF	-8 / -	2	✓ Closing fragment
08-24 02:41	20m	-10 / -	<...>	- / -15	2	Partial capture
08-24 00:37	20m	-7 / -	AO5FSB	- / -21	5	Partial capture
08-23 23:54	20m	-10 / -	AO5FSB	- / -25	11	Partial capture
08-23 23:47	20m	- / -4	8Q7PR	-4 / -	2	Partial capture
08-23 23:36	20m	-10 / -	P41MTO	- / -19	3	✓ Closing fragment
08-23 23:34	20m	-10 / -8	7Z1BQ	-4 / -18	4	✓ Full exchange observed
08-23 23:31	20m	-13 / -	TL8GD	- / -16	3	✓ Closing fragment
08-23 00:08	20m	- / -	LX1FDE	+1 / -	4	Partial capture
08-23 00:04	20m	- / +4	OZ1BUR	-4 / -	2	✓ Closing fragment
08-11 04:44	40m	- / -1	DL7ROB	-6 / -	4	Partial capture
08-11 04:26	20m	- / -	E74PA	-9 / -	4	Partial capture
08-11 04:17	20m	- / -11	UA9CK	-12 / -	2	✓ Closing fragment
08-11 04:14	20m	- / -	RY6O	-21 / -	2	Partial capture
08-11 04:06	20m	- / -	RC6OX	-9 / -	4	Partial capture
08-11 04:03	20m	- / -	R6ZEJ	-8 / -	2	Partial capture
08-11 04:02	20m	- / -	YU5C	-19 / -	6	Partial capture
08-11 04:01	20m	- / -2	RC5F	-14 / -	6	✓ Closing fragment
08-11 03:21	40m	- / -	F5MNW	-16 / -	3	Partial capture
08-11 02:59	20m	- / -16	SV5BYP	-20 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
012830  +9 1731  HK3J F5NBU JN28
012845  -1 1729  F5NBU HK3J -08
012900  +7 1730  HK3J F5NBU R-02
012915  -1 1730  F5NBU HK3J RR73
012930 +15  497  HK3J UA4CPM LO32
012945  -3 1729  UA4CPM HK3J -14
013000 +11  497  HK3J UA4CPM R-04
013015  +0 1729  UA4CPM HK3J RR73
013030  +2  497  HK3J UA4CPM 73
013030  -3 1730  HK3J IU8RFW JN70 (x3)
013230 -19 1956  HK3J MI7XHT IO64 (x3)

20m

UTC    dB Audio  Message
235600 -10 1248  AO5FSB HK3J -25 (x12)
024130  -9 1250  <...> HK3J -15 (x2)
211730  +0 2852  DG6GU HK3J RR73

80m

UTC    dB Audio  Message
213245 -16  596  HK3J EA3HUV JN11
040845 +13  382  HK3J DO1ID JO41 (x2)
041215 +15 2692  HK3J DF7EF R-10 (x2)
041815  -5  750  HK3J CR7BRV R-17 (x2)
041915 -11 1250  HK3J IK6GTF JN72 (x3)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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